# Information **Collection Request for the Microbial**  **Rules**i 

### TABLE OF CONTENTS 1 ID ENTIFICATION OF THE INFORMATION COLLECTION ........................... 1 1(a) Title and Number of the Information Collection ................................ .................... 1 1(b) Short Characterization ................................ ................................ ............................ 1 2 NEED FOR AND USE OF THE COLLECTION ................................ .................. 3 2(a) Need/Authority for the Collection ................................ ................................ .......... 3 2(b) Use/Users of the Data ................................ ................................ ............................. 9 3 NON - DUPLICATION, CONSULTAT IONS, AND OTHER COLLECTION

CRITERIA ................................ ................................ ................................ ............ 11 3(a) Non - duplication ................................ ................................ ................................ .... 11 3(b) Public Notice Required Prior to I CR Submission to OMB ................................ .. 11 3(c) Consultatio ns ................................ ................................ ................................ ........ 11 3(d) Effects of Less Frequent Collection ................................ ................................ ..... 13 3(e) General Guidelines ................................ ................................ ............................... 14 3(f) Confidentiality ................................ ................................ ................................ ...... 14 3(g) Sensitive Questions ................................ ................................ .............................. 14 4 RESPONDENTS AND INFORMATION REQUESTED ................................ ... 15 4(a) Respondents/NAI CS Codes ................................ ................................ .................. 15 4(b) In formation Requested ................................ ................................ ......................... 15 5 IN FORMAT ION COLLECTED -- AGENCY ACTIVITIES, COLLECTION

METHODOLOGY, AND INFORMATION MANAGEMENT .......................... 49 5(a) Agency

Activities ................................ ................................ ................................ . 49 5(b) Collection Methodology and Management ................................ .......................... 52 5(c) Small Entity

Flexibility ................................ ................................ ........................ 53 5(d) Collection Schedule ................................ ................................ .............................. 56 6 ESTIMATING BURDEN AND COST OF COLLECTION ................................ 58 6(a) Respondent Burden ................................ ................................ .............................. 59 6(b) Respondent Costs ................................ ................................ ................................ . 64 6(c) Agency

Burden and Costs ................................ ................................ .................... 67 6(d) Estimating Respondent Universe and Total Burden and Costs ............................ 67 6(e) Bottom Line Burden Hours and Costs ................................ ................................ .. 68 6(f) Reasons for Change in Burden ................................ ................................ ............. 70 6(g) Burden Statement ................................ ................................ ................................ . 74ii 

### APPENDICES Appendix A. Federal Register Notice Soliciting Comments on Information Collection

Requests Appendix B. Surface Water Treatment Rule Spreadsheets Appendix C. Total Coliform Rule Spreadsheets (Appendix C1)

Revised Total Coliform Rule Spreadsheets (Appendix C2) Appendix D. Interim Enhanced Surface Water Treatment Rule Spreadsheets Appendix E. Long Term 1 Enhanced Surface Water Treatment Rule Spreadsheets Appendix F. Long Term 2 Enhanced Surface Water Treatment Rule Spreadsheets Appendix G. Ground Water Rule Spreadsheets Appendix H. Aircraft Drinking Water Rule Spreadsheetsiii 

### LIST OF EXHIBITS Exhibit 1: Structure of OGWDW I CRs ................................ ................................ ................... 6 Exhibit 2: PWS Recordkeeping and Reporting Requirements ................................ .............. 16 Exhibit 3: Primacy

Agency Recordkeeping and Reporting Requirements ............................ 24 Exhibit 4: EPA Requirements ................................ ................................ ................................ 51 Exhibit 5: Collection Schedule ................................ ................................ .............................. 57 Exhibit 6: Annual PWS Burden and Cost, May 1, 2012

– April 30, 2015 ............................ 66 Exhibit 7: Annual Air Carrier Burden and Cost, May 1, 2012

– April 30, 2015 ................... 66 Exhibit 8: Annual Primacy Agency Burden and Cost, May

1, 2012

– April 30, 2015 ......... 66 Exhibit 9: Bottom Line Annual Burden and Cost, May 1, 2012

– April 30, 2015 ................ 69 Exhibit 10: Summary

of Changes in Annual Burden (Includes PWS and Primacy Agency Burden) ................................ ................................ ................................ ................. 70 Exhibit 11: Restructuring Adjustments to the Annual Burden Inventory for the Microbial Rules I CR (Includes PWS and Primacy Agency Burden) ................................ .... 71 Exhibit 12: Adjustments to PWS Burden from Previous I CR Estimates ............................... 72 Exhibit 13: Adjustments to Air Carrier Burden from Previous I CR Estimates ...................... 73 Exhibit 14: Adjustments to Primacy Agency Burden from Previous ICR Estimates ............. 73 Exhibit 15: Adjustments to Annual Burden Carried Forward from Previous ICR

Estimates (Includes PWS and Primacy Agency Burden) ................................ ..... 74iv 

### LIST OF FIGURES Figure 1: Structure of OGWDW ICRs 5v 

### ACRONYMS ADWR Aircraft Drinking Water Rule AMWA Association of Metropolitan Water Agencies ARCS Aircraft Reporting and Compliance Sy stem ASDWA Association of State Drinking Water Administrators AWWA American Water Works Association BL S Bureau of Labor Statistics CCP Composite Correction Program CCR Consumer Confidence Report CDC Centers for Disease Control and Prevention CFE Combined Filter Effluent CFR Code of Federal Regulations CPE Comprehensive Performance Evaluation CWS Community Water S ys tem CWSS Community Water S ys tems Survey DBPR Disinfectants and Disinfection By products Rule DWSRF Drinking Water State Revolving Fund EPA Environmental Protection Agency ESWTR Enhanced Surface Water Treatment Rule ETT Enforcement Targeting Tool FAA Federal Aviation Administration FBRR Filter Backwash Recycling Rule FTE Full Time Equivalent GWR Ground Water Rule GWUDI Ground Water Under the Direct Influence of Surface Water HAA5 Haloacetic Acids HPC Heterotrophic Plate Count ICR In formation Collec tion Request IESWTR Interim Enhanced Surface Water Treatment Rule IFA Individual Filter Assessment LCR Lead and Copper Rule LT1ESWTR Long Term 1 Enhanced Surface Water Treatment Rule LT2ESWTR Long Term 2 Enhanced Surface Water Treatment Rule MCL Maximum Co ntaminant Level MCL G Maximum Contaminant Level Goal M - DBP Microbial Disinfectants and Disinfection By products NAI CS North American Industry Classification System NAWC National Association of Water Companies NCWS Noncommunity Water System NPDWRs National Primary Drinking Water Regulations NRDC Natural Resources Defense Council NRWA National Rural Water Association NTU Nephelometric Turbidity Unit O&M Operation and Maintenance OGWDW Office of Ground Water and Drinking Water OMB Office of Management and Budget PN Public Notification PRA Paperwork Reduction Act PWS Public Water System PWSS Public Water System Supervisionvi



### RegNeg Regulation Negotiation RFA Regulatory Flexibility

Analysis RIA Regulatory Impact Analysis RTCR Revised Total Coliform Rule SBARP Small Business Advocacy Review Panel SBREFA Small Business Regulatory Enforcement Fairness Act SCADA Supervisory Control and Data Acquisition SDWA Safe Drinking Water Act SDWI S Safe Drinking Water Information System SER Small Entity Representat ive SOC Standard Occupational Classification SWAP Source Water Assessment Program SWTR Surface Water Treatment Rule TCR Total Coliform Rule TNCWS Transient Noncommunity Water S ys tem TTHM Total Trihalomethanes UCMR Unregulated Contaminant Monitoring Rule UI C Underground Injection Control V&Es Variances and ExemptionsMicrobial Rules ICR August 2015

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## 1 **IDENTIFICATION OF THE INFORMATION COLLECTION 1(a)**  **Title and Number of the Information Collection** Title: Information Collection Request for the Microbial Rules OMB Control Number: 2040 - 0205 EPA Tracking Number: 1895.09 **1(b) Short Characterization**  The Office of Ground Water and Drinking Water (OGWDW) at the U.S. Environmental Protection Agency

(EPA) is responsible for developing National Primary Drinking Water Regulations (NPDWRs) as mandated b y the Safe Drinking Water Act (SDWA). Section 1412 of the SDWA requires EPA to establish NPDWRs for contaminants that may adversel y impact human health. In section 1414, the Act further requires EPA to enforce these regula tions to ensure that the nation’s public drinking water systems dependabl y compl y with th e standards stipulated in the Code of Federal Regulations (CFR), 40 CFR Part 141, Subpart B. Section 1445 of the SDWA stipulates that every public drinking water syst em (PWS ) supplier conduct monitoring, maintain records, and provide such information as is needed for EPA to implement i ts monitoring and enforcement responsibilities with respect to the Act. Forty- nine States have been given primary enforcement responsibi lity, or primacy , under SDWA to ensure that PWSs are complying with the requirements of the NPDWRs. The Safe Drinking Water Information S ys tem (SDWI S) federal and state databases contain information in conformance with reporting requirements established by the SDWA and related regulations and guidance. These data assist EPA in fulfilling its SDWA obligations. SDWIS assists EPA in tracking and interpreting violations data and other program - related data. Revisions are currently being made to this system. EPA expects primacy agencies to full y transition to the revised system , SDWI S Prime , in the subsequent ICR period.

1 Throughout this document, the terms “state” or “states” are used to refer to all types of primacy agencies. There are currently 57 primacy

agencies, including the 50 states, the District of Columbia, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and Northern Marianas), and Navajo Nation. Though Wyoming and the District of Columbia do not have primacy, the EPA burden for these activities is counted as primacy agency burden.Microbial Rules ICR August 2015

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### This I CR examines PWS, air carrier, primacy agency and EPA burden and costs for recordkeeping and reporting required in support of microbial contaminant - associated rulemakings. EPA’s microbial rules include: 1) Surface Water Treatment Rule (SWTR) 2 

### 2) Total Coliform Rule (TCR)/Revised Total Coliform Rule (RTCR) 3 

### 3) Interim Enhanced Surface Water Treatment Rule (IESWTR) 4) Filter Backwash Recycling Rule (FBRR) 5) Long Term 1 Enhanced Surface Water Treatment Rule (LT1ESWTR) 6) Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) 7) Ground Water Rule (GWR) 8) Aircraft Drinking Water Rule (ADWR) This I CR estimates burden and costs for September 1, 2015 through August 31, 2018 for the rules above. Itupdates the burden and cost estimates provided in the Microbial Rules I CR dated August 2012, which expires on August 31, 2015. Net change burden and costs (i.e., incremental costs over the 1989 TCR) developed in the previously approved RTCR I CR for the period following the RTCR effective date of April 1, 2016, are accounted for in this programmatic ICR. The burden and cost estimates for each rule are discussed in greater detail in section 6 of this document. Continuing costs and burden for microbial rules listed above are evaluated in this I CR. The total annual burden associate d with this I CR is estimated to be approximately 14.7 million hours per year. The total annual cost associated with this I CR is estimated to be approximately

$652.5 million. The distribution of annual burden between PWSs, air carriers and primacy agencies is approximately 12.0 million hours, 0.03 million hours, and 2.6 million hours, respectivel y. The distribution of annual costs between PWSs, air carriers, and primacy agencies is approximately

$522.8 million, $4.2 million, and $125.6 million, respectively . There is no EPA burden or cost for this I CR. 4 

### Section 6 and Appendices B through H detail these burden and cost calculations. The approximate annual operation and maintenance (O&M) and capital costs are $110.0 million ($88.0 million for O&M and $22.0 million for capital). This represents the “cost burden” as reported in the OMB inventory . These costs are for PWSs and air carriers onl y; primacy agencies do not have capital or O&M costs associated with the Microbial Rules. The total number of respondents for this I CR is 149,864; 57 of these respondents are primacy agencies, 42 are air carriers, and the balance are existing PWSs (149,765). The total
2 This Microbial Rules ICR includes all SWTR components except disinfectant residual monitoring and associated activities, which are included in the Disinfectants and Disinfection Byproducts, Chemical, and Radionuclides (DDBP/Chem/Rads) Rules ICR (see section 4(b)(i)). 3 The burden associated with the first 3 years of RTCR imple mentation was amended to the 2012 OMB - approved Microbial Rules ICR on January 23, 2014. However, text and supporting appendices related to the RTCR are included in the Microbial Rules ICR for the first time. 4 EPA directly implements the ADWR, but the burden and cost for these activities is accounted for in the PWSS Program ICR under the 206.4 regional FTEs dedicated to drinking water protection implementation activities.Microbial Rules ICR August 2015

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### annual number of responses for these respondents is 29.2 million (27. 1 million for PWSs, 0.13 million for air carriers and 2.0 million for primacy agencies). 

## 2 **NEED FOR AND USE OF THE COLLECTION 2(a)**  **Need/Authority for the Collection** This section identifies the regulatory or statutory

authority for the information collection activities covered in this ICR and describes why EPA needs the information. Section 4 contains a summary

of the major recordkeeping and reporting requirements for rules covered by this ICR. The Microbial Rules ICR includes the following rules addressing microbial contaminants: 1) Surface Water Treatment Rule 2) Total Coliform Rule/Revised Total Coliform Rule 3) Interim Enhanced Surface Water Treatment Rule 4) Filter Backwash Recycling Rule 5) Long Term 1 Enhanced Surface Water Treatment Rule 6) Long Term 2 Enhanced Surface Water Treatment Rule 7) Ground Water Rule 8) Aircraft Drinking Water Rule As EPA publishes new regulations, EPA will amend the appropriate ICR to include the new rules. For a graphical depiction of the structure of the OGWDW I CRs, see Figure 1. A complete itemization of the activities included in the three primary I CRs, as well as other drinking water program ICRs, is included as Exhibit 1. The information collected under this microbial IC R is required b y EPA to carry out its monitoring and enforc ement responsibilities as specified under SDWA and its amendments. Without comprehensive, up - to - date information on microbial contaminants present in drinking water, the Agency

would not be able to meet these statutory requirements. Section 1412(b) authorizes EPA to establish NPDWRs to protect public health. Further, section 1445 of the SDWA requires that “every person who is a supplier of water shall establish and maintain such records, make such reports, conduct such monitoring, and provide such in formation as the Administrator may reasonabl y require b y regulation to assist him in establishing regulations, in determining whether such person has acted or is in compliance with this title...”Microbial Rules ICR August 2015

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### In addition, section 1401(1)(D ) of the SDWA 1986 amendments defines NPDWRs to include “criteria and procedures to assure a suppl y of drinking water which dependabl y complies with such maximum contaminant levels; including accepted methods for quality control and testing procedures to insure complian ce with such levels; including accepted methods for quality

control and testing procedures...” This section authorizes EPA to require systems and laboratories to use Agency- approved methods and quality assurance criteria for collecting and anal yz ing water samples.Microbial Rules ICR August 2015

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## Figure 1. **Structure of OGWDW ICRs Microbial**  **Rules ICR**  FBRR TCR/

RTCR 1 IESW TR SW TR 2 LT1 GW R LT2 AD WR Lab QA 2040 - 0246 DW SRF

2040 - 0185 SW AP 2040 - 0197 Bioterrorism

UCMR 3 2040 - 0270 

### UIC **Program ICR**  Classes I - VI

UCMR 4 2040 - 0270 Green = Activities remain as in current ICR Purple = Future rule to be addressed in stand - alone ICR 1 RTCR burden and costs incurred after April 2016 are being added to TCR. 2 DDBP/Chem/Rads Rules ICR includes disinfectant residual monitoring under SWTR 3 Includes LCR Short-Term Revisions 

### DDBP/Chem/Rads **Rules ICR**  Chems LCR 3 Stage 1 Arsenic Rads Stage 2 Lab QA 2040 - 0246 DW SRF

2040 - 0185 SW AP 2040 - 0197 Bioterrorism

UCMR 3 2040 - 0270 

### UIC **Program ICR**  Classes I - VI

UCMR 4 2040 - 0270 Green = Activities remain as in current ICR Purple = Future rule to be addressed in stand - alone ICR 1 RTCR burden and costs incurred after April 2016 are being added to TCR. 2 DDBP/Chem/Rads Rules ICR includes disinfectant residual monitoring under SWTR 3 Includes LCR Short-Term Revisions 

### PWSS **Program ICR**  State Primacy Activities Proficiency V&E’s CCRs PN Cap Dev Op Cert Tribal

Op Cert Constructed

ConveyancesMicrobial Rules ICR August 2015

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### Exhibit 1: Structure of OGWDW ICRs **Currently covered To be covered in the future**  **PWSS Program ICR (2040 -**  **0090)** Consumer Confidence Reports (CCRs) Variances & Exemptions Capacity Development Program General State Primacy Activities Public Notification (PN) Operator Certification Expense Reimbursement Grants Program Tribal Operator Certification Constructed Conveyances Proficienc y T esting **Microbial Rules ICR (2040 -**  **0205)** Surface Wa ter Treatment Rule, except disinfectant residual monitoring and associated activities 5 Total Coliform Rule/ Revised Total Coliform Rule Interim Enhanced Surface W ater Treatm ent Rule (IESW TR) Filter Backwash Recycling Rule Long Term 1 Enhanced Surface Wa ter Treatment Rule (LT1ESW TR) Long Term 2 Enhanced Surface Wa ter Treatment Rule (LT2ESW TR) Ground W ater Rule Aircraft Drinking Wa ter Rule **Disinfectants/Disinfection Byproducts, Chemical, and Radionuclides Rules ICR (2040 -**  **0204)** Stage 1 Disinfectants and Disinfection By products Rule Disinfectant Residual Monitoring and associated activities under the S WT R Stage 2 D isinfectants and Disinfection Byproducts Rule Chemical Phase Rules Radionuclides Rule Arsenic Rule Lead and Copper Rule Lead and Copper Rule Long Term Revisions **Source Water A ssessment Program (SW**  **AP) ICR (2040 -**  **0197)** SW AP **Underground Injection Control (UIC) Program ICR (2040**  **- 0042)**  UIC Base Program Activities Classes I - VI Rule Florida Class I Rule **Drinking Water State Revolving Fund (DWSRF) Program ICR (2040 -**  **0185)** Drinking W ater State Revolving Fund Program 5 Disinfectant residual mo nitoring and associated activities are included in the DDBP/Chem/Rads Rules ICR.Microbial Rules ICR August 2015

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7 **Currently covered To be covered in the future**  **Drinking Water Infrastructure Needs Survey ICR (2040 -**  **0274)** Needs Survey **Title VI of the Public Health Security and Bioterrorism Preparedness and Response A** **ct of 2002:**  **Drinking Water Security and Safety ICR (2040 -**  **0253)** Vulnerability Assessments and Emergency Response Plans for community water systems (CWS s). **Unregulated Contaminant Monitoring Rule ICR (2040**  **- 0270)**  Monitoring of Unregulated Contaminants (UCMR 3) UCMR 4 **Laboratory Quality A ssurance Evaluation Program for A**  **nalysis of Cryptosporidium ICR (2040 -**  **0246)** Proficienc y T esting Program for Laboratories Analyzing Cryptosporidium



###  Surface Water Treatment Rule (S WTR) The 1986 SDWA amendments required EPA to propose and promulgate a NPDWR specifying criteria under which filtration would be required as a treatment technique for PWSs supplied by

surface water sources (section 1412 (b)(7)(C)(i)). In promulgating this regulation and setting the criteria, EPA was required to consider source water quality; protection afforded by watershed management programs; treatment techniques, such as disinfection practices and length of water stora ge; and other factors relevant to protection of public health. The requirements for the SWTR included in this I CR help EPA promote public health through proper operation of filtration techniques. Additional SWTR requirements, such as monitoring and watersh ed control programs, promote protection of public health in the absence of filtration.

 Total Coliform Rule (TCR) The 1986 SDWA amendments required EPA to publish maximum contaminant level goals (MCLGs) and promulgate NPDWRs for the 83 contaminants listed in the Advance Notice of Proposed Rulemaking at 47 FR 45502 (March 4, 1982) and 48 FR 45502 (October 5, 1983). EPA believes that promulgation of this regulation complied with the statutory requirements for regulating total coliforms in all PWSs.

 Revised Total Coliform Rule (RTCR) The 1996 SDWA amendments require EPA to review and revise, as appropriate, each existing NPDWR no less often than every six years (SDWA section 1412(b)(9)). In 2003, EPA completed its review of the 1989 TCR (68 FR 42908, July 18 , 2003) and stated its intent to revise the 1989 TCR . The purpose of the review was to identify new health risk assessments, changes in technology , and other factors that would provide a health - related or technological basis to support a regulatory revisio n.Microbial Rules ICR August 2015

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### The RTCR achieves the objectives of the 1989 TCR by taking into account the changes in regulatory

framework for implementing the SDWA over the past 20 years and experience with the TCR since it was promulgated in 1989. The information collected under the RTCR is required by EPA to carry

out its monitoring and enforcement responsibilities under the SDWA. Without comprehensive, up - to - date information on drinking water contamination, EPA would not be able to meet the SDWA statutory requirements.

 Interim Enhanced Surface Water Treatment Rule (IESW TR) SDWA section 1412(b)(2)(C) of the 1996 amendments required EPA to promulgate an Interim Enhanced Surface Water Treatment Rule . The IESWTR set the first drinking water standards to control Cryptosporidium in systems serving 10,000 or more customers .  Filter Backwash Recycling Rule (FBRR) The 1996 SDWA amendments established new drinking water requirements for filtration. SDWA section 1412(b)(14) require d the Administrator to promulgate a re gulation to govern the recycling of filter backwash water within the treatment process of a PWS. The FBRR satisfies this regulatory

requirement.

 Long Term 1 Enhanced Surface Water Treatment Rule (LT1ESW TR) SDWA section 1412(b)(2)(C) required EPA to develop rules to balance the risks between microbial pathogens and disinfection by products. The provisions in the LT1ESWTR address the concerns covered b y the IESWTR as they appl y t o systems serving fewer than 10 ,000 customers.

 Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESW TR) SDWA section 1412(b)(2)(C) required EPA to develop rules to balance the risks between microbial pathogens and disinfection b yproducts. The LT2ESWTR builds upon the SWTR, IESWTR , and LT1ESWTR by supplementing existing microbial treatment requirements for s ys tems where additional public health protection is needed. Collectively , the SWTR, IESWTR, LT1ESWTR, and LT2ESWTR place stringent treatment requirements on systems using surf ace water as a source.

 Ground W

ater Rule (G WR) The 1996 SDWA amendments required the Administrator to publish a national drinking water regulation requiring disinfection of ground water as necessary (section 1412(b)(8)). The GWR sets conditions where disinfection of ground water is considered necessary . The final GWR was promulgated November 8, 2006.Microbial Rules ICR August 2015

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###  Aircraft Drinking W ater Rule (ADWR) All PWS s are subject to the NPDWRs unless they are excluded from regulatory requirements under SDWA section 1411. Section 1411 excludes from regulation any PWS that receives all of its water from another regulated PWS , does not sell or treat the water, and is not a “carrier which conveys passengers in interstate commerce.” The cla sses of interstate carrier conveyances (ICCs) include aircraft, trains, buses, and water vessels. As a result, all I CCs that regularl y serve water to an average of at least twenty- five individuals daily , at least 60 days per ye ar are PWS s and are currentl y subject to existing NPDWRs regardless of whether they treat or sell the water. Water used for human consumption onboard an aircraft must meet the requirements of the SDWA , as with all other PWSs . EPA promulgated the ADWR to tailor existing health based drinking water standards to the unique characteristics of aircraft. **2(b) Use/Users of the Data**  The information described in section 4 of this I CR will be collected by EPA and made available to the public upon request, as required by the Freedom of In formation Act (40 CFR Chapter 1 Part 2). In some cases, SDWA requires that the information be provided to the public or the primacy

agency . Primary

users of the data collected under this ICR are OGWDW, PWS managers, air carriers and primacy agencies, whi ch include state regulators, Indian Tribes, and, in some instances, EPA Regional Administrators. Other users include the following:

 

### Staff from other EPA programs (such as Superfund, the Resource Conservation and Recovery Act, and the Office of Enforcement and Compliance Assurance)  

### Federal Emergency

Management Agency  

### Centers for Disease Control and Prevention (CDC)  

### Military

bases  

### Farmers Home Administration  

### Department of Interior  

### Department of Housing and Urban Development  

### U.S. Army

Corps of Engineers  

### White House Task Forces  

### American Water Works Association (AWWA)  

### Association of Metropolitan Water Agencies (AMWA)  

### National Rural Water Association (NRWA)  

### National Association of Water Companies (NAWC)  

### Association of State Drinking Water Administrators (ASDWA)  

### C onsumer organizations  

### News organizations Primacy agencies maintain records compiled from PWS respondents (40 CFR 142.14) and can use these records to track PWS monitoring and compliance violations, as well as enforcement activities. The primacy agency can also track schedules for PWSs trying to achieve compliance.Microbial Rules ICR August 2015

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### Primacy agencies report information on PWS violations to SDWI S. This federal information sy stem allows EPA and states to store and retrieve information over time. Trends in compliance data can be evaluated at the s ys tem, state, and national program levels. Usually , these data are used b y the Agency for maintaining oversight and to communicate information on drinking water program implementation.Microbial Rules ICR August 2015

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## 3 **NON -**  **DUPLICATION, CONSULTATIONS, A ND OTHER**  **COLLECTION CRITERIA 3(a)**  **Non -**  **duplication** EPA has made an effort to ensure that the data collection efforts associated with this ICR are not duplicated. EPA consulted with state environmental programs, other federal agencies (such as the CDC), and regulated entities (such as PWSs and their representative trade associations) during the development of each rule discussed in this document. To the best of EPA's knowledge, data currentl y required b y the SDWA (and its implementing regulations codified at 40 CFR Parts 141 and 142) are not available from any other source. **3(b) Public Notice Required Prior to ICR Submission to OMB**  To comply

with the 1995 amendments to the PRA, EPA solicited public comment on this ICR for a 60 - day

period before it was submitted to OMB. Specifically , EPA published a notice in the Federal Register on March 31, 2015 (80 FR 17040) requesting comment on the estimated respondent burden and other aspects of this I CR (Appendix A). EPA did not receive any comments during the 60 - day comment period. **3(c) Consultations**  In May 2015, as part of the revision of the Microbial Rules I C R , EPA consulted with representatives of PWSs and states regarding the accuracy of EPA’s burden estimates. The groups consulted were NAWC, NRWA, AWWA, AMWA, and ASDWA. EPA received comments from ASDWA . ASDWA’s comments were incorporated into this I CR to the extent possible. The end of each appendix to the I CR contains a table summarizing EPA’s previous and revised burden estimates for the relevant rule. **3(d) Effects of Less Frequent Collection**  EPA has considered a wide range of alternatives for frequency of data collection. Where possible, EPA has chosen to require the least frequent collection that remains consistent with overall public health protecti on objectives. If data are collected less frequently , the primacy agency may not identify

in a timely

fashion significant contaminant concentrations which might threaten the health and safety of drinking water consumers. For some microbial contaminant regulations, the primacy agency has discretion in adjusting the monitoring schedules. Monitoring schedules vary based on the number of people served b y a s ys tem, contaminants likely to be found, and source of raw water supply . The monitoring frequency framewo rk also considers that the number of people served affects exposure to contaminants, as well as the resources available to undertake monitoring activity. Monitoring frequencies have been carefull y devised based on the following factors:

 

### Data quality neede d for a representative sample.  

### Precision and accuracy needed from the representative sample.  

### Number of people served by the s ys tem.  

### Source of the suppl y (e.g., surface water or ground water).Microbial Rules ICR August 2015

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### Contaminants likely

to be found.  

### Historical variability

in contaminant occurrence.Microbial Rules ICR August 2015

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### 3(e) **General Guidelines** This collection conforms to all the general guidelines at 5 CFR 1320.5(d)(2) . **3(f) Confidentiality**  No confidential information will be collected as a result of this I CR. **3(g) Sensitive Qu**  **estions** No information of a sensitive nature will be collected as a result of this I CR.Microbial Rules ICR August 2015

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## 4 **RESPONDENTS AND INFORMATION REQUESTED 4(a)**  **Respondents/NAICS Codes** Data associated with this ICR are collected and maintained at the PWS, air carrier, state, and federal levels. Respondents include:

 

### Owners/operators of PWSs, who must report to the primacy agency .  

### All commercial air carriers that fly routes between two or more locations within the United States and whose aircraft meet the definition of a PWS. Air carriers report to EPA. 6  

### Primacy

agencies, which must report to EPA. The North American Industry Classification S ys tem (NAICS) code for PWSs is 22131. The NAICS code for state agencies that include drinkin g water programs is 92411 (Administration of Air and Water Resources and Solid Waste Management Programs) or 92312 (Administration of Public Health Programs). Ancillary s ys tems (i.e., those that supplement the function of other establishments like factorie s, power plants, mobile home parks, etc.) cannot be categorized in a single NAI CS code. For ancillary systems, the NAI CS code is that of the primary establishment or industry . The NAICS codes for air carriers are 481111 and 481211, the codes for scheduled and unscheduled air transportation industries, respectivel y. **4(b) Information Requested**  Exhibits 2 and 3 summarize the respondent information collection requirements covered by the Microbial Rules ICR. These requirements are also discussed below.

6 Note that technically aircraft are PWSs if they serve 25 or more people at least 60 days each year. However, aircraft water systems are not included in the inventory of PWSs contained in SDWIS. US EPA has developed the Aircraft Reporting and Compliance Systems (ARCS) to capture the reporting of aircraft PWS data, pursuant to ADW R. Additionally, the ADWR applies only to air carriers that own and operate aircraft water systems. Because many air carriers own or operate mo re than one aircraft, there is not a one - to - one correspondence between aircraft water systems and respondents. For these reasons, for the ADWR standalone ICR, EPA did not group aircraft water systems with PWS respondents (NAICS co de 22131). Instead, EPA determined that air carriers were the appropriate respondents. EPA decided to carry that designation forward as it incorporated the ADWR ICR into the 2012 OMB - approved Microbial Rules ICR.Microbial Rules ICR August 2015

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### Exhibit 2: PWS **Recordkeeping and Reporting Requirements Requirement**  **Regulatory Citation Frequency/Retention**  **General Requirements (apply to all regulations) Reporting**  Except where a different period is specified in an individual drinking water regulation, PW Ss are required to submit the following to the state: Results of any test measurement or analysis required in 40 CFR Part 141. 40 CFR 141.31(a) By the end of the required mo nitoring Failure to comply with any NPDW R. 40 CFR 141.31(b) and (c) As necessary, unless state lab performs analysis and reports results directly to state Copies of records required to be ma intained under 40 CFR 141.33 and/or copies of documents that the state is entitled to under section 1445 of SDW A or state law. 40 CFR 141.31(e) As requested by the state **Recordkeeping** Except where a different period is specified in an individual drinking water regulation, PWS s are required to retain the following information: Records of bacteriological or chemical analyses and related information. 40 CFR 141.33(a) 5 years for bacteriological data; 10 years for chemical Records of actions taken by the PW S to correct violations of NPDW Rs. 40 CFR 141.33(b) 3 years after last action taken related to the violation Copies of any

written reports, summaries or communications relating to sanitary surveys. 40 CFR 141.33(c) 10 years Records concerning a variance or exemption granted. 40 CFR 141.33(d) 5 years following the expiration of the variance or **SWTR (all requirements except those regarding disinfection residual monitoring)**  **Unfiltered Systems –**  **Reporting** Report source water quality information to the state for each month the system serves water to the public. 40 CFR 141.75(a)(1)(i) through (ix) Monthly Report to the state a summary of PW S com pliance with all watershed control program requirements. 40 CFR 141.75(a)(3) Annually Report to the state on - site inspection s conducted during that year. 40 CFR 141.75(a)(4) Annually Report to the state a ny waterborne disease outbreak potentially attributable to th e water system . 40 CFR 141.75(a)(5)(i) As soon as possible but not later than end of the next business day. Report to the state a ny time turbidity exceeds 5 nephelometric turbidity units (NTU ) . 40 CFR 141.75(a)(5)(ii) As soon as practical but no later than 24 hours after learning of the exceedance. **Filtered Systems –**  **Reporting**Microbial Rules ICR August 2015

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16 **Requirement Regulatory Citation**  **Frequency/Retention** Report to the state turbidity me asurements and associated information for each month the system serves water to the public. 40 CFR 141.75(b)(1)(i) through (iii) Monthly Report to the state a ny time turbidity exceeds 5 NTU the PW S . 40 CFR 141.75(b)(3)(ii) As soon as practical but no later than 24 hours after learning of the exceedance. Report to the state a ny waterborne disease outbreak potentially attributable to that water system . 40 CFR 141.75(b)(3)(i) As soon as possible but not later than end of the next business day. **TCR Reporting**  Prepare written sample siting plan for state review. 40 CFR 141.21(a)(1) As necessary Notify the state if fecal coliforms or E. coli are present. 40 CFR 141.21(e)(1) B y end of the day in which system receives results, or if state office is closed, by end of next business day. Report to the state any exceedance of the ma xim um contam inant level (MCL) for total coliforms. 40 CFR 141.21(g)(1) B y end of next business day. Report to the state any failure to comply with coliform monitoring requirements. 40 CFR 141.21(g)(2) W ithin 10 days after discovering the violation. **Recordkeeping** Subject to general requirements as listed above. **RTCR Reporting**  Report an E. coli MCL violation to the state. 40 CFR 141.861(a)(1)(i) B y end of the day in which system learns of the violation, or if state office is closed, by end of next business day . Report an E. coli

- positive sample to the state. 40 CFR 141.861(a)(1)(ii) B y end of the day in which system receives results, or if state office is closed, by end of next business day . Report treatment technique violation for total coliforms to the state. 40 CFR 141.861(a)(2) B y end of next business day after the system learns of the violation. Subm it assessment form to the state. 40 CFR 141.861(a)(3) Wi thin 30 days of triggering an assessment and upon com pletion of each scheduled corrective action for corrections not completed by the time of subm ission of the assessment form. Report a coliform monitoring violation to the state. 40 CFR 141.861(a)(4) W ithin 10 days after discovering the violation. Certify that the system has complied with the State - approved start - up procedure (for seasonal systems only ). 40 CFR 141.861(a)(5) As necessary, prior to serving water to the public. **Recordkeeping**Microbial Rules ICR August 2015

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17 **Requirement Regulatory Citation**  **Frequency/Retention** An y assessment form, documentation of corrective actions completed as a result of assessments, or other available summary

documentation of the sanitary defects found and corrective actions taken. 40 CFR 141.861(b)(1) No less than 5 years

An y repeat sample taken that meets state criteria for an extension of the 24 - hour period for collecting repeat samples. 40 CFR 141.861(b)(2) 5 years (as required under 40 CFR 141.33(a)) **IESWTR Reporting**  A PW S using alternative filtration technologies must demonstrate to the state that the system achieves required removal/inactivation. 40 CFR 141.173(b) As necessary A PW S m ust report combined filter effluent (CFE) turbidity levels for each mo nth that the system serve s water to the public. 40 CFR 141.175(a)(1) through (3) Monthly A PW S m ust report that it has conducted individual filter turbidity monitoring for each month that the system serves water to the public. 40 CFR 141.175(b) Monthly If certain measurement thresholds are exceeded, a PWS m ust report individual filter turbidity measurements for each mo nth that the system serves water to the public. 40 CFR 141.175(b)(1) through (4) As necessary Following certain exceedances, a PW S mu st report to the state the reason for the exceedance or that it has produced a filter profile. 40 CFR 141.175(b)(1) and (2) As necessary Following certain exceedances, a PW S mu st report to the state that it has conducted a filter self- assessment. 40 CFR 141.175(b)(3) As necessary Following certain exceedances, a PW S mu st submit to the state a com prehensive performance evaluation 40 CFR 141.175(b)(4) As necessary If certain CFE measurement thresholds are exceeded, systems must inform the state. 40 CFR 141.175(c)(1) and (2) As soon as possible but no later than the end of the next business day. A PW S m ust subm it information to the state as part of the required consultation process when making significant changes to disinfection practices. 40 CFR 141.172(c)(4) As necessary **Recordkeeping** Systems must maintain the results of individual filter turbidity 40 CFR 141.175(b) 3 years A PW S m ust retain disinfection profile data in graphic form, as a spreadsheet, or in some other format acceptable to the state for review as part of sanitary surveys conducted by the state. 40 CFR 141.172(b)(6) As necessaryMicrobial Rules ICR August 2015

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18 **Requirement Regulatory Citation**  **Frequency/Retention FBRR**  **Recordkeeping** Collect and retain on file the following recycle flow information for review and evaluation by the state: 1) Copy of the recycle notification and information previously submitted to the state; 2) List of all rec yc le flows and the frequency with which they are returned; 3) Average and maxim um backwash flow rate through the fi lters and the average and maximum duration of the filter backwash process in mi nutes; 4) T yp ical filter run length and a written summary

of how filter run length is determined; 5) The type of treatment provided for the rec yc le flow; and 6) Data on the phys ical dimensions of the equalization and/or treatment units, ty pical and maximum hydraulic loading rates, type of treatment chemicals used and average dose and frequency of use, and frequency at which solids are removed, if applicable. 40 CFR 141.76(d)(1) t hrough (6), 141.33 10 years

**LT1ESWTR Reporting**  A PW S using alternative filtration technologies must demonstrate to the state that the system achieves required removal/inactivation. 40 CFR 141.552(a) As necessary A PW S m ust report CFE turbidity levels for each month that the system serves water to the public. 40 CFR 141.570(a), 141.551 Monthly A PW S m ust report that it has conducted individual filter turbidity monitoring for each month that the system serves water to the public. 40 CFR 141.570(b)(1), 141.560(d) Monthly If certain measurement thresholds are exceeded, a PWS m ust report individual filter turbidity measurements for each mo nth that the system serves water to the public. 40 CFR 141.570(b)(2), 141.560(d), 141.563(a) As necessary Following certain exceedances, a PW S mu st report to the state the reason for the exceedance. 40 CFR 141.570(b)(2), 141.563(a) As necessary Following certain exceedances, a PW S mu st report to the state that it has conducted a filter self- assessment. 40 CFR 141.570(b)(3) As necessary Following certain exceedances, a PW S mu st report to the state that a CPE was triggered. 40 CFR 141.570(b)(4) As necessary Following certain exceedances, a PW S mu st submit to the state a CPE. 40 CFR 141.570(b)(5) and 141.563(c) W ithin 120 days after the CPE was triggeredMicrobial Rules ICR August 2015

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19 **Requirement Regulatory Citation**  **Frequency/Retention** Report a description of the proposed change in disinfection, the system’s disinfection profile for Giardia lamblia (and, if necessary, viruses) and disinfection benchmark, and an analysis of how the proposed change will affect the current levels of 40 CFR 141.570(d), 141.542 As necessary

**Recordkeeping** Records of individual filter turbidity mo nitoring measurements. 40 CFR 141.571(a), 141.560(e) At least 3 years Records of disinfection profiles (including raw data and analysis). 40 CFR 141.571(b), 141.536 Indefinitely Records of disinfection benchmarking (including raw data 40 CFR 141.571(c) Indefinitely **LT2ESWTR Reporting**  Results of E. coli and Cryptosporidium (and turbidity, if applicable) source water mo nitoring. 40 CFR 141.706(a) Monthly while monitoring is required Bin classification (or mean Cryptosporidium level for unfiltered systems). 40 CFR 141.710(e)(1) - (e)(2), 141.712 6 months after source water mo nitoring is complete Use of uncovered finished water reservoirs and a schedule for covering or disinfecting them. 40 CFR 141.714(b) One time, by April 1, 2008. Systems installing technology mu st dem onstrate compliance with technology based criteria. 40 CFR 141.715 Varies Systems changing disinfection practices mu st develop a disinfection profile and benchmark for Giardia and 40 CFR 141.708 - 141.709 As necessary Sam pling schedule. 40 CFR 141.702 Once prior to initial mo nitoring and once during second round of monitoring **Recordkeeping** Records of sample results for Cryptosporidium, E. coli and turbidity. 40 CFR 141.706 At least 3 years Systems changing technologies must com plete a disinfection profile for Giardia and viruses. 40 CFR 141.708 At least 3 years Results of treatment monitoring associated with microbial toolbox and with uncovered finished water reservoirs. 40 CFR 141.722 At least 3 years Notification that systems will not conduct source water mo nitoring due to having 5 - log treatment in place. 40 CFR 141.722 At least 3 years **GWR Reporting** Microbial Rules ICR August 2015

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20 **Requirement Regulatory Citation**  **Frequency/Retention** A PW S conducting compliance mo nitoring mu st notify the state any time the system fails to meet any state specified requirements including, but not lim ited to, mi nim um residual disinfectant concentration, membrane operating criteria or membrane integrity, and alternative treatment operating criteria, if operation in accordance with the criteria or requirements is not restored within 4 hours. 40 CFR 141.405(a) As soon as possible but no later than the close of the next business day.

After completing any

c orrective action, a PW S mu st notify the state o f com pletion of the corrective action. 40 CFR 141.405(a) Wi thin 30 days. If a PWS with a positive TCR sample does not conduct source water mo nitoring, the s ys tem must provide documentation to the state that it met the state criteria for avoiding mo nitoring. 40 CFR 141.405(a) Wi thin 30 days **Recordkeeping** Records of corrective actions. 40 CFR 141.405(b) At least 10 years Reports of public notification. 40 CFR 141.405(b) At least 3 years Documentation of records of decisions and records of invalidation of fecal indicator- positive ground water source samples. 40 CFR 141.405(b) At least 5 years For consecutive systems, documentation of notification to the wholesale system(s) of total - coliform positive sam ples that are not invalidated. 40 CFR 141.405(b) At least 5 years Records of the state - specified minimum disinfectant residual. 40 CFR 141.405(b) At least 10 years Records of the lowest daily residual disinfectant concentration and records of the date and duration of any failure to ma intain the state - prescribed minimum residual disinfectant concentration for a period of more than 4 hours. 40 CFR 141.405(b) At least 5 years

Records of state - specified compliance requirements of membrane filtration and of parameters specified by the state for state - approved alternative treatment and records of the date and duration of any failure to meet the membrane operating, me mb rane integrity, or alternative treatment operating requirements for mo re than 4 hours. 40 CFR 141.405(b) At least 5 yearsMicrobial Rules ICR August 2015

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21 **Requirement Regulatory Citation**  **Frequency/Retention ADWR**  **7 Reporting**  Development of a sampling plan. 40 CFR 141.806(a)(1) One time, by April 19, 2011 (or for new aircraft, during the first quarter of operation). The coliform sampling frequency listed in the sampling plan. 40 CFR 141.806(a)(1) One time, by April 19, 2011 (or for new aircraft, during the first quarter of operation). Development of an operations and ma intenance plan. 40 CFR 141.806(a)(1) One time, by April 19, 2011 (or for new aircraft, during the first quarter of operation). Frequenc y for routine disinfection and flushing, cited in the operations and ma intenance plan. 40 CFR 141.806(a)(1) One time, by April 19, 2011 (or for new aircraft, during the first quarter of operation). Inventory inform ation for each aircraft. 40 CFR 141.806(b)(1) One time, by April 19, 2011 Changes in aircraft inventory. 40 CFR 141.806(b)(2) 10 days after the calendar mo nth in which the changes occurred. Coliform sampling results. 40 CFR 141.806(b)(3) According to the frequency established in the sampling plan, within 10 days after the sampling period ends. Routine disinfection and flushing events. 40 CFR 141.806(b)(3) According to the frequency established in the operations and maintenance plan, within 10 days of the end of the disinfection and flushing period. All events requiring notification to passengers or crew, or non - routine disinfection and flushing, or non - routine sam pling. 40 CFR 141.806(b)(4) Wi thin 10 days of the event. Failure to comply with the monitoring or disinfection and flushing 40 CFR 141.806(b)(5) Wi thin 10 calendar days of discovery of the failure. Changes in disinfection and flushing and coliform sam pling frequencies. 40 CFR 141.806(b)(6) No later than 10 days following the calendar month in which the change occurred. Evidence of a self- inspection. 40 CFR 141.806(c) Wi thin 90 days of completion of the inspection. Wh ether a deficienc y detected during a self- inspection or com pliance audit has been corrected, and a schedule if it has not. 40 CFR 141.806(c) Wi thin 90 days of the detection of the deficiency. **Recordkeeping** Records of bacteriological analyses. 40 CFR 141.807(a) At least 5 years Records of any disinfection and flushing. 40 CFR 141.807(b) At least 5 years Records of self- inspections. 40 CFR 141.807(c) At least 10 years Sam pling plans, such plans must be available for review by the Adm inistrator upon request, including during comp liance audits. 40 CFR 141.807(d) None specified; must be ma intained and available for review by EPA.

7 Respondents for ADWR are determined differently than respondents for other rules in the ICR. See previous footnote.Microbial Rules ICR August 2015

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22 **Requirement Regulatory Citation**  **Frequency/Retention** Aircraft water system operations and ma intenance plans. 40 CFR 141.807(e) None specified, must be ma intained in accordance with Federal Aviation Adm inistration (FAA) requirements and made Copies of public notices issued to passengers and crew. 40 CFR 141.807(f) At least 3 yearsMicrobial Rules ICR August 2015

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### Exhibit 3 **Primacy A** **gency Recordkeeping**  **and Reporting Requirements Requirement**  **Regulatory Citation Mi**  **nimum Frequency/ Retention Period**  **General Requirements (apply to all regulations) Reporting**  Subm it reports to the Administrator containing new violations incurred by the PWS s and enforcement actions initiated by the state during the previous quarter. 40 CFR 142.15(a)(1) and (2) Quarterly

**Recordkeeping** Maintain records of tests, measurements, analyses, decisions, and determinations performed on each PW S to determ ine com pliance with applicable provisions of state primary drinking water regulations. 40 CFR 142.14(a) Varies (not less than one year)
Retain files, which shall include for each PW S in the state reports of sanitary s urveys, records of any state approvals, and records of any enforcement actions. 40 CFR 142.14(d)(2) and (3) 12 years **SWTR (all requirements except those regarding disinfection residual monitoring)**  **Reporting** A list of PW Ss that includes the name, identification number and date of the determination by the state that the PWS is not required to provide filtration system. 40 CFR 142.15(c)(1)(i)(A) As necessary A list of PW Ss that includes the name and identification number for each PWS that the state has determined has no means of having a sample transported and analyzed for heterotrophic plate count (HPC) by a certified laboratory under the requisite time and temperature conditions and is providing adequate disinfection in the distribution s ys tem. 40 CFR 142.15(c)(1)(i)(B) As necessary

Notification of any determination that a PW S is not required to provide filtration treatment. 40 CFR 142.15 (c)(1)(ii) W ithin 60 da ys of the end of the calendar quarter. **Recordkeeping** Records of microbiological analyses. 40 CFR 142.14(a)(1) 1 year Records of microbiological analyses of repeat or special samples. 40 CFR 142.14(a)(2) 1 year Records of turbidity measurements. 40 CFR 142.14(a)(3) 1 year Records of decisions made on a system by- system and case - by- case basis under provisions of Part 141, Subpart H, Subpart P, or Subpart T . 40 CFR 142.14(a)(4)(ii) VariesMicrobial Rules ICR August 2015

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24 **Requirement Regulatory Citation**  **Mi nimum Frequency/**  **Retention Period** Records of any decision to allow a PW S to substitute a turbidity limit, sample at alternate locations, use continuous mo nitoring (for unfiltered s ystems), or reduce sampling sampling frequency or reporting requirements. 40 CFR 142.14(a)(4)(ii)(A)(1) through (5),(7),(8) 40 years or until 1 year after the decision is reversed or revised. Records of any decision that a violation of the total coliform MCL was not caused by a deficiency in treatment of the source water. 40 CFR 142.14(a)(4)(ii)(B)(3) One year after the decision is ma de. Records of any decision that total coliform mo nitoring otherwise required because the turbidity of the source water exceeds 1 NTU is not feasible, except that if such decision allows a s ys tem to avoid mo nitoring without receiving state approval in each instance. 40 CFR 142.14(a)(4)(ii)(B)(4) One year after the decision is ma de.

Records of any decision that a PW S’s watershed control program me ets the requirements of 141.71(b)(2). 40 CFR 142.14(a)(4)(ii)(C)(3) Until the next decision is available and filed. Records of any decision that an individual is a qualified operator for a PW S using a surface water source or a ground water source under the direct influence of surface water. 40 CFR 142.14(a)(4)(ii)(C)(4) Until the qualification is withdrawn. Records of any decision that a party other than the state is approved to conduct on - site inspections. 40 CFR 142.14(a)(4)(ii)(C)(5) Until the decision is withdrawn. Records of any decision that an unfiltered PW S has been identified as the source of a waterborne disease outbreak, and, if applicable , deficiencies have been addressed to prevent another such occurrence. A copy of the decision mu st be provided to the syste m. 40 CFR 142.14(a)(4)(ii)(C)(6) Until filtration treatment is installed.

Records of any decision that certain interim disinfection requirements are necessary for an unfiltered PWS for which the state has determined that filtration is necessary, and a lis t of those requirements. A copy of the requirements mu st be provided to the system. 40 CFR 142.14(a)(4)(ii)(C)(7) Until filtration treatment is installed.

Records of any decision that automatic shut - off of delivery of water to the distribution s ys tem of an unfiltered PW S would cause an unreasonable risk to health or interfere with fire protection. 40 CFR 142.14(a)(4)(ii)(C)(8) Until rescinded.Microbial Rules ICR August 2015

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25 **Requirement Regulatory Citation**  **Mi nimum Frequency/**  **Retention Period** Records of any decision that a PWS m ay use alternative filtration technology because they consistently achieve 99.9 percent removal and/or inactivation of Giardia lamblia cysts and 99.99 percent removal and/or inactivation of viruses. A copy of the decision must be provided to the PWS . 40 CFR 142.14(a)(4)(ii)(C)(11) Until the decision is reversed or revised.

Records of any decision that a s ys tem using a ground water source is under the direct influence of surface water. 40 CFR 142.14(a)(4)(ii)(C)(14) 40 years Records of any determination that a PW S supplied by a surface water source or a ground water source under the direct influence of surface water is not required to provide filtration treatment. A copy of the determination must be provided to the system. 40 CFR 142.14(a)(4 )(ii)(C)(14)(iii) 40 years or until withdrawn, whichever is earlier. Records of analysis for other than mi crobiological contaminants (including total coliform, fecal coliform, and HPC), residual disinfectant concentration, other parameters necessary to determine disinfection effectiveness. 40 CFR 142.14(a)(6) 12 years

**Special Primacy Requirements** An application for approval of a state program revision that adopts 40 CFR Part 141, Subpart H Filtration and Disinfection. 40 CFR 142.16(b) One time **TCR Reporting**  Reports to the Administrator containing a list of PW Ss that the state is allowing to mo nitor less frequently than once per mo nth for CWS s or less frequently than once per quarter for Noncommunity W ater Systems (NCWS s). 40 CFR 142.15(c)(2) One tim e; update as needed.

**Recordkeeping** Records of microbiological analyses. 40 CFR 142.14(a)(1) 1 year Records of microbiological analyses of repeat or special samples. 40 CFR 142.14(a)(2) 1 year Records of any decision to waive the 24 - hour time lim it for collecting repeat sam ples after a total coliform - positive routine sample. 40 CFR 142.14(a)(5)(i)(A) 5 years Records of any decision to allow a system to waive the requirement for five routine samples the month following a total coliform - positive sample. 40 CFR 142.14(a)(5)(i)(B) 5 years Records of any decision to invalidate a total coliform - positive sample. 40 CFR 142.14(a)(5)(i)(C) 5 yearsMicrobial Rules ICR August 2015

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26 **Requirement Regulatory Citation**  **Mi nimum Frequency/**  **Retention Period** Records of any decision to reduce the total coliform monitoring frequenc y for certain CW Ss to less than once per mo nth. A copy of the reduced frequency decision must be provided to the system. 40 CFR 142.14(a)(5)(ii)(A) Retain in such a ma nner that a system’s current sta tus may be determined. Records of any decision to reduce the total coliform monitoring frequenc y for certain NCWS s to less than once per quarter. A copy of the reduced frequenc y decision must be provided to the system. 40 CFR 142.14(a)(5)(ii)(B) Retain in such a ma nner that a system’s current status may be determined. Records of any decision to reduce the total coliform monitoring frequenc y for certain NCWS s during any month the system serves 1,000 persons or fewer. A copy of the reduced frequency must be provided to the system. 40 CFR 142.14(a)(5)(ii)(C) Retain in such a ma nner that a system’s current status may be determined. Records of any decision to waive the 24 - hour limit for taking a total coliform sample for PWS s that do not practice filtration in accordance with Part 141, Subpart H, and that measure a source water turbidity level exceeding 1 NTU near the first service connection. 40 CFR 142.14(a)(5)(ii)(D) Retain in such a ma nner that a system’s current status may be determined. Records of any decision that certain NCW Ss m ay

reduce the frequenc y of their sanitary survey to less than once every five years, along with a record of the reduced frequency. A copy of the reduced frequency decision must be provided to the s ys tem. 40 CFR 142.14(a)(5)(ii)(E) Retain in such a ma nner that a system’s current status may be determined. A list of agents other than the state, if any, approved to conduct sanitary surveys. 40 CFR 142.14(a)(5)(ii)(F) Retain in such a ma nner that a system’s current s tatus may be determined. Records of any decision to allow a PW S to forgo fecal coliform or E. coli testing on a total coliform - positive sample if that system assumes that the total coliform positive sample is fecal coliform - positive or E. coli - positive. 40 CFR 142.14(a)(5)(ii)(G) Retain in such a ma nner that a system’s current status may be determined. **RTCR Reporting**  A list of systems that the state is allowing to monitor under a reduced mo nitoring frequency. 40 CFR 142.15(c)(3) Not specified **Recordkeeping** An y case - by- case decision to waive or extend the 24 - hour time limit for collecting repeat samples following a total coliform positive routine sample, sample invalidation, or (for unfiltered systems) a high turbidity measurement. 40 CFR 142.14(a)(10)(i)(A) 5 yearsMicrobial Rules ICR August 2015

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27 **Requirement Regulatory Citation**  **Mi nimum Frequency/**  **Retention Period** An y decision to allow a system to waive the requirement for three routine sam ples the month following a total coliform - positive sample. 40 CFR 142.14(a)(10)(i)(B) 5 years An y decision to invalidate a total coliform positive sample. 40 CFR 142.14(a)(10)(i)(C) 5 years Completed and approved Level 1 and/or Level 2 assessments, including reports from the system that corrective action has been completed. 40 CFR 142.14(a)(10)(i)(D) 5 years An y decision to reduce the total coliform mo nitoring frequency for a NCW S using only ground water and serving 1,000 or fewer people to less than once per quarter. 40 CFR 142.14(a)(10)(ii)(A) Retain in such a ma nner that a system’s current status ma y be determined. An y decision to reduce the total coliform mo nitoring frequency for a CW S serving 1,000 or fewer people to less than once per month. 40 CFR 142.14(a)(10)(ii)(B) Retain in such a ma nner that a system’s current status may be determined. An y decision to reduce the total coliform mo nitoring frequency for a NCW S using only ground water and serving more than 1,000 people during any month the system serves 1,000 or fewer people 40 CFR 142.14(a)(10)(ii)(C) Retain in such a ma nner that a system’s current status may be determined. An y decision to allow a system to forgo E. coli testing of a total coliform - positive sam ple if that system assumes that the total coliform - positive sample is E. colipositive. 40 CFR 142.14(a)(10)(ii)(D) Retain in such a ma nner that a system’s current status may be determined. **IESWTR Reporting**  A list of Subpart H systems that have had a sanitary survey completed during the previous year and an annual evaluation of the state’s program for conducting sanitary surveys. 40 CFR 142.15(c)(5) Annually **Recordkeeping** Records of turbidity measurements. 40 CFR 142.14(a)(3) 1 year Records of decisions made on a system by- system and case - by- case basis under provisions of Part 141, Subpart H, Subpart P, or Subpart T. 40 CFR 142.14(a)(4)(ii) As necessaryMicrobial Rules ICR August 2015

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28 **Requirement Regulatory Citation**  **Mi nimum Frequency/**  **Retention Period** Records of systems consulting with the state concerning a significant mo dification to their disinfection practice (including the status of the consultation). 40 CFR 142.14(a)(7)(i) As necessary Records of decisions that a system using alternative filtration technologies can consistently achieve a 2 - log (99 percent) removal of Cryptosporidium oocysts, as well as the required levels of removal and/or inactivation of Giardia and viruses for systems using alternative filtration technologies. 40 CFR 142.14(a)(7)(ii) As necessary, kept until decision is reversed or revised.

Records of systems required to conduct a filter self- assessment, CPE or composite correction program (CCP). 40 CFR 142.14(a)(7)(iii) As necessary **FBRR Reporting**  Subject to general requirements as listed above. **Recordkeeping** Records of any decisions made to approve alternate recycle 40 CFR 142.14(a)(4)(ii)(A)(9) 40 years or until 1 year after decision is reversed or revised. **LT1ESWTR Reporting**  Subject to general requirements as listed above. **Recordkeeping** Records of turbidity me asurements. 40 CFR 142.14(a)(3) Not less than one year. Records of decisions made on a system by- system and case - by- case basis under provisions of Part 141, Subpart H, Subpart P, or Subpart T. 40 CFR 142.14(a)(4)(ii) As necessary Records of systems consulting with the state concerning a significant mo dification to their disinfection practice (including the status of the consultation). 40 CFR 142.14(a)(7)(i) As necessary Records of decisions that a system using alternative filtration technologies can consistently achieve a 2 - log (99 percent) removal of Cryptosporidium oocysts, as well as the required levels of removal and/or inactivation of Giardia and viruses for systems using alternative filtration technologies. 40 CFR 142.14(a)(7)(ii) As necessary

Records of those s ys tems required to conduct a filter self- assessment, CPE or CCP. 40 CFR 142.14(a)(7)(iii) As necessary **LT2ESWTR Reporting**  The bin classification after the initial and after the second round of source water mo nitoring for each filtered system. 40 CFR 142.15(c)(6) After each round of monitoring.
An y change in treatment requirements for these systems due to watershed assessments during sanitary surveys. 40 CFR 142.15(c)(6) After each round of monitoring.Microbial Rules ICR August 2015

29 Microbial Rules ICR August 2015

29 **Requirement Regulatory Citation**  **Mi nimum Frequency/**  **Retention Period** The determination of whether the mean Cryptosporidium level is greater than 0.01 oocysts/L both after the initial and after the second round of source water mo nitoring for each unfiltered system. 40 CFR 142.15(c)(6) As necessary **Recordkeeping** Results of Cryptosporidium and E. coli source water monitoring. 40 CFR 142.14(a)(9) As necessary Bin classification after the first and second round of monitoring. 40 CFR 142.14(a)(9) As necessary An y change in treatment requirements for filtered s ys tems due to watershed assessment during sanitary surveys. 40 CFR 142.14(a)(9) As necessary The determination of whether the mean Cryptosporidium level is greater than 0.01 oocysts/L after the initial and after the second round of source water monitoring for each unfiltered s ys tem. 40 CFR 142.14(a)(9) As necessary The treatment processes or control me asures that systems use to meet their Cryptosporidium treatment requirements. 40 CFR 142.14(a)(9) As necessary A list of systems required to cover or treat the effluent of an uncovered finished water storage facility. 40 CFR 142.14(a)(9) As necessary **GWR Reporting**  The month and year in which the most recent sanitary survey was com pleted. F or a state that used a phased review process, the date the last element of the applicable eight elements was evaluated for each ground water system. 40 CFR 142.15(c)(7) As necessary

The date the system completed the corrective action. 40 CFR 142.15(c)(7) As necessary All ground water s ys tems providing at least 4 - log treatment of viruses (using inactivation, removal, or a state - approved com bination of 4 - log virus inactivation and removal) before or at the first customer for any ground water so urce(s). 40 CFR 142.15(c)(7) As necessary

**Recordkeeping** Records of written notices of significant deficiencies. 40 CFR 142.14(d)(17) At least 12 years Records of corrective action plans, schedule approvals, and state - specified interim measures. 40 CFR 142.14(d)(17) At least 12 years Records of confirmations that a significant deficienc y has been corrected or the fecal contamination in the ground water source has been addressed. 40 CFR 142.14(d)(17) At least 12 yearsMicrobial Rules ICR August 2015

30 Microbial Rules ICR August 2015

30 **Requirement Regulatory Citation**  **Mi nimum Frequency/**  **Retention Period** Records of state determinations and records of ground water s ystems’ documentation for not conducting triggered source water monitoring. 40 CFR 142.14(d)(17) At least 12 years Records of invalidations of fecal indicatorpositive ground water source samples. 40 CFR 142.14(d)(17) At least 12 years Records of state approvals of source water monitoring plans. 40 CFR 142.14(d)(17) At least 12 years Records of notices of the minimum residual disinfections concentration (when using chemical disinfection) needed to achieve at least 4 - log virus inactivation before or at the first 40 CFR 142.14(d)(17) At least 12 years

Records of notices of the state - specified mo nitoring and compliance requirements (when using membrane filtration or alternative treatment) needed to achieve at least 4 - log treatment of viruses (using inactivation, removal, or a state approved combination of 4 - log inactivation and removal) before or at the first customer. 4 0 CFR 142.14(d)(17) At least 12 years

Records of written notices from the ground water system that it provides at least 4 - log treatment of viruses (using inactivation, removal, or a state - approved com bination of 4 - log virus inactivation and removal) before or at the first customer for each ground water source. 40 CFR 142.14(d)(17) At least 12 years

Records of written determinations that the ground water system may discontinue 4 - log treatment of viruses (using inactivation, removal, or a state - approv ed com bination of 4 - log inactivation and removal). 40 CFR 142.14(d)(17) At least 12 years

**ADWR** States do not have information collection requirements for the ADW R. 

### 4(b)(i) Data Items 1) Surface Water Treatment Rule 8 

### Provisions of the SWTR require the following data to be collected b y PWSs:

 

### Source water coliform data for unfiltered systems.

8 Includes all rule components except disinfectant residual monitoring and associated activities, which are included in the DDBP/Chem/Rads Rules ICR (see footnote 2 for more information).Microbial Rules ICR August 2015

31 Microbial Rules ICR August 2015

31  

### CFE turbidity

data for filtered s ys tems.  

### Source water turbidity for unfiltered s ys tems.  

### Residual disinfectant concentrations for filtered and unfiltered s ys tems. (This requirement is addressed under the DDBP/Chem/Rads I CR).  

### Annual summaries of watershed control programs for unfiltered s ys tems.  

### Annual reports summarizing the results of on - site inspections for unfiltered s ys tems.  

### A report to the primacy agency within 48 ho urs following attribution of any waterborne disease outbreak in filtered and unfiltered s ys tems. In addition, primacy

agencies must submit special reports as specified in 40 CFR 142.15(c)(1). These reports include:

 

### List of PWSs not required to provide fi ltration.  

### List of PWSs not required to analyze for HPC.  

### Notification of determination that a PWS is not required to provide filtration. 2a) Total Coliform Rule The TCR requires PWSs to collect and report presence or absence of coliform bacteria (as total coliform) in the distribution system and data on the presence or absence of E. coli or fecal coliform. Primacy

agencies must maintain results of sanitary survey s conducted under TCR. In addition, primacy agencies must submit special reports as specified in section 142.15(c) and must maintain records as specified in section 142.14(a)(5). These reports include lists of PWSs that have received permission for reduced monitoring or monitoring waivers and the effective dates of these waivers. 2b) Revised Total Coliform Rule The following are the reporting and recordkeeping requirements for PWSs beginning on April 1, 2016. Note that sample siting plans were submitted during the RTCR startup period and were covered under the standalone ICR. In addition to the reporting requirements specified in 40 CFR 141.31, PWSs are required by the RTCR to report the following to the states (see section 141.861(a)):

 

### E. coli MCLviolation by the end of the day the system learns of the violation, or by the end of the next business day if the state office is closed when the system learns of the violation.  

### E. coli -positive sample by the end of the day

when the system learns of the anal ytical result, or by

the end of the next business day if the state office is closed when the system learns of the result.  

### Treatment technique violation for total coliforms by no later than the end of the next business day

after the PWS learns of the violation. The PWS must provide public notification.Microbial Rules ICR August 2015

32 Microbial Rules ICR August 2015

32  

### Assessment form within 30 day s of triggering an assessment and completion of each scheduled corrective action for corrections not completed by the time of submission of the assessment form. A “Level 1” assessment (described further in section 4(b)(ii)) is required in the following situations: o PWSs taking ≥40 samples per month have total coliform bacteria present in more than 5 percent of samples for a given month; o PWSs taking <40 samples per month have two or more total coliform positive samples in a month; or o PWSs fail to take all required repeat samples after a single total coliform positive sample.

 

### A “Level 2” assessment is required in the following situations: o A PWS has an E. coli MCLviolation; or o A PWS is triggered into a Level 1 assessment for the second time in 12 months, unless the first Level 1 treatment technique trigger was based on exceeding the allowable number of total coliform - positive samples, the state has determined a likely reason for the positive samples that caused the initial L evel 1 treatment technique trigge r, and the state establishes that the system has fully

corrected the problem; or o PWSs with approved reduced annual monitoring triggers a Level 1 assessment in two consecutive ye ars.  

### Monitoring violation within 10 days after the PWS discovers the violation. The PWS must provide public notification. In addition to the recordkeeping requirements for PWSs specified in 40 CFR 141.33, PWSs are required b y the RTCR to keep records of the following (see section 141.861(b)):

 

### Any assessment form, documentation of corrective actions completed as a result of assessments, or other available summary documentation of the sanitary defects found and corrective actions taken for state review; and  

### Any repeat sample taken that meets state criteria for an extension of the 24 - hour period for collecting repeat samples. States must begin complyingwith the reporting and recordkeeping requirements described below by April 1, 2016. It i 

### s important to note that the burden associated with the development of primacy applications was addressed in the standalone RTCR I CR. In addition to the reporting requirements specified in 40 CFR 142.15, the RTCR requires states to report the following to EPA (see section 142.15(c)(3)):

 

### A list of systems that the state is allowing to monitor under a reduced monitoring frequency . In addition to those items already specified in 40 CFR 142.14, states are required to keep records of the following (see section 142.14(a)(10)):Microbial Rules ICR August 2015

33 Microbial Rules ICR August 2015

33  

### Any case - by- case decision to waive or extend the 24 - hour time limit for collecting samples following either a total coliform -positive routine sample, invalidation, or a high turbidity measurement;  

### Any decision to allow a system to waive the requirement for three routine samples the month following a total coliform -positive sample;  

### Any decision to invalidate a total coliform -positive sample;  

### Completed and approved L evel 1 and/or Level 2 assessments, including reports from the s ys tem that corrective action has been completed;  

### Any decision to reduce the total coliform monitoring frequency for a CWS serving 1,000 or fewer people to less than once per month;  

### Any decision to reduce the total coliform monitoring frequency for a NCWS using onl y ground water and serving 1,000 or fewer people to less than once per quarter;  

### Any decision to reduce the total coliform monitoring frequency for a NCWS using onl y ground water and serving more than 1,000 people during any m onth the system serves 1,000 or fewer people; and  

### Any decision to allow a system to forgo E. coli testing of a total coliform positive sample if that system assumes that the total coliform -positive sample is E. coli - positive. 3) Interim Enhanced Surface Water Treatment Rule EPA must balance the health risks from microbial organisms , such as Giardia lam blia and Cryptosporidium , against risks from compounds formed during water disinfection. The IESWTR and Stage 1 DBPR, which were promulgated concurrentl y, address complex and interrelated drinking water issues. The IESWTR requires individual filter monitoring and modifies the allowable turbidity levels specified in the SWTR. Under the IESWTR, PWSs must report the following:

 

### The total number of CFE turbidity measurements that exceeded their 95th percentile turbidity limit and the number of measurements that exceed their maximum turbidity

limit.  

### That they

have conducted individual filter turbidity monitoring, including the dates, filter number, and turbidities of any measurements that exceed 1.0 NTU.  

### Reports of exceptions to turbidity performance for individual filters.  

### If a self

- assessment is required, the s ys tem must report the date that it was triggered and the date that it was completed.  

### If a CPE is required, the sy stem must report that the CPE is required and the date that it was triggered.  

### If a CPE i s required, the sy stem must submit a copy of the completed CPE report.  

### When those systems that are required to develop a disinfection profile plan a significant change in disinfection practice, they must submit the profile, along with an anal ys is of how th e proposed change will affect the current disinfection benchmark to the state for review. The IESWTR requires PWSs to keep the following records:Microbial Rules ICR August 2015

34 Microbial Rules ICR August 2015

34  

### Individual filter turbidity measurements. items: The IESWTR (in section 142.14) requires primacy agencies to maintain the following

 

### Records of turbidity

measurements for individual filters.  

### Records of disinfectant residual measurements and other parameters necessary to document disinfection effectivenes s.  

### A list of systems consulting with the state to modify their disinfection practices.  

### A record of state decisions regarding the use of alternative filtration technologies that have demonstrated 99 percent removal of Cryptosporidium oocysts by

specific wat er sy stems.  

### Records of any other s ys tem - by- system and case - by- case decisions made by the state under provisions of Part 141, Subpart H or Subpart P or Subpart T.  

### Records of those s ys tems required to perform filter self - assessments, CPEs, CCPs. Additionall y, the primacy agency must report the following (per section 142.15):

 

### Subpart H sy stems 9 

### that have had a sanitary survey in the last year.  

### Evaluation of the state’s program for conducting sanitary survey s for all Subpart H systems. 4) Filter Backwash Recycling Rule Under the FBRR, PWSs should already have reported the following, but they must keep records of the reported information on file:

 

### Recycle notification, which includes plant schematic, recycle flow, and plant flow.  

### List of all recycle flows and the frequency with which they

are returned.  

### Average and maximum backwash flow rates through the filters.  

### Average and maximum duration of the filter backwash process.  

### Ty pical filter run length and a written summary of how filter run length is determined.  

### Ty pe of treatment provided for the recycle flow.  

### Data on the phys ical dimensions of the equalization and/or treatment units, ty pical and maximum hydraulic loading rates, type of treatment chemicals used, average dose of treatment chemicals, frequency of treatment chemical use, and frequency at which solids are removed, if applicable.  

### Primacy

agencies must maintain records of decisions regarding alternate recycle locations at PWSs.

9 Subpart H systems include all PWSs using surface water or ground water under the direct influence of surface water (GWUDI) as a source (40 CFR section 141.2).Microbial Rules ICR August 2015

35 Microbial Rules ICR August 2015

35 

### 5) Long Term 1 Enhanced Surface Water Treatment Rule Under the LT1ESWTR, PWSs must report the following:

 

### The total number of CFE turbidity measurements that exceeded their 95th percentile turbidity limit and the number of measurements that exceed their maximum turbidity

limit.  

### That they

have conducted individual filter turbidity monitoring, including the dates, filter number, and turbidities of any measurements that exceeded 1.0 NTU.  

### For s ys tems that exceed 1.0 NTU in two consecutive measurements , the filter number, date, time, and reason for the exceedance at the end of the month.  

### Exceptions to turbidity perform ance for individual filters.  

### If a self

- assessment is required, the s ys tem must report the date that it was triggered and the date that it was completed.  

### Any requirement to conduct a CPE and the date that it was triggered.  

### The system must submit a copy of the completed CPE report.  

### Results of optional monitoring that show total trihalomethane (TTHM) levels <0.064 mg/L and haloacetic acid (HAA5) levels <0.048 mg/L (onl y if the system wishes to forgo profiling) or report that disinfection profiling has begun. • A description of the proposed change in disinfection, the system’s disinfection profile for Giardia lamblia (and, if necessary , viruses) and disinfection benchmark, and an analysis of how the proposed change will affect the current levels of disinfection. The PWS recordkeeping requirements under the rule include:

 

### Records of individual filter turbidity measurements.  

### Records of disinfection profiles.  

### Records of benchmarking. Currently , states are subject to the general reporting requirements under 40 CFR 142.15. There are no additional reporting requirements under this rule. The additional state recordkeeping requirements under the LT1ESWTR include:

 

### Records of turbidity

measurements for individual filters.  

### Records of disinfectant residual measurements and other parameters necessary to document disinfection effectiveness.  

### A list of systems consulting with the state to modify their disinfection practices.  

### A record of state decisions regarding the use of alternative filtration technologies that have demons trated 99 percent removal of Cryptosporidium oocysts by

specific water systems.Microbial Rules ICR August 2015

36 Microbial Rules ICR August 2015

36  

### Records of any other s ys tem - by- system and case - by- case decisions made by the state under provisions of Part 141, Subpart H or Subpart P or Subpart T.  

### Records of those s ys tems required to perform filter self - assessments, CPE s or CCP s . 6) Long Term 2 Enhanced Surface Water Treatment Rule PWSs must submit the following information:

 

### Sampling schedules, including sampling location(s) and planned dates for source water sampling (for initial and second round monitoring). S ys tems serving 50,000 people or more submitted sampling schedules for the second round of monitoring under the previous I CR period; all other s ys tems will submit schedules during this I CR period. For s ys tems that filter and serve 10,000 or more people, monitor as follows (note that the first round of monitoring occurred during previous IC R periods; a second round of monitoring is in progress):

 

### Monthly E. coli and Cryptosporidium monitoring results, to be taken over a period of 2 ye ars, plus two matrix spike samples for Cryptosporidium .  

### Monthly

turbidity monitoring results (sampled concurrentl y with Cryptosporidium and E. coli). For small s ys tems that filter and serve fewer than 1 0,000 people, the first round of monitoring occurred during previous I CR periods, and a second round of monitoring will begin during this ICR period. These s ys tems monitor as follows:

 

### Biweekl y E. coli monitoring results, to be taken over a period of 1 year (beginning in this ICR period).  

### If s ys tem exceeds the Cryptosporidium monitoring trigger based on E. coli monitoring results, then 24 Cryptosporidium samples, plus two matrix spike samples for Cryptosporidium . (Note that Cryptosporidium monitoring will n ot begin until the next I CR period.) Large unfiltered s ys tems are required to collect 24 Cryptosporidium samples over a period of 2 ye ar s . Small unfiltered s ys tems are required to collect 24 Cryptosporidium samples over a period of 1 or 2 ye ars. Both grou ps of sy stems are required to collect two matrix spike samples for Cryptosporidium . For filtered s ys tems, sampling plans and bin classifications for the second round of monitoring must be reported to the state. All unfiltered s ys tems must report their mean Cryptosporidium levels to the state. (Some systems will incur a burden for this during this I CR period.) PWSs of all sizes that propose to make a significant change to their disinfection practice will complete disinfection profiles and benchmarks for Giardia lamblia and viruses and reportMicrobial Rules ICR August 2015

37 Microbial Rules ICR August 2015

37 

### these, along with a description of the proposed change in disinfecti on practice and an anal ys is o f 

### how the proposed change will affect the current level of disinfection. Most disinfection changes associated with the LT2ESWTR (and Stage 2 DBPR) occurred during previous IC R periods. Disinfection profiling will be completed d uring this ICR period . PWSs of all sizes that install new technology as a result of their bin classifications or choose to disinfect the effluent from an uncovered finished water reservoir will be required to demonstrate compliance with certain criteria f or each technology . PWSs must keep all monitoring data collected under the LT2ESWTR on file for 3 ye ars. These data must be available for review during sanitary survey s. States will be required to maintain the following data:

 

### Results of initial and reasse ssment source water monitoring for small s ys tems.  

### Initial bin classifications for each filtered system and mean Cryptosporidium level for each unfiltered system.  

### Records of toolbox treatment technologies that systems choose to meet their treatment techniqu e requirements, plus any changes in toolbox treatment technologies, including all documentation necessary to demonstrate compliance with required design and implementation criteria for receiving log credit for toolbox options.  

### Any changes to initial bin classifications based on watershed assessment during sanitary survey s.  

### Records of technologies employed b y unfiltered systems to meet virus, Giardia , and Cryptosporidium inactivation requirements.  

### List of s ys tems required to cover or treat effluent of an uncovered finished water reservoir. States must report the following to EPA:

 

### Second round bin classification for each filtered s ystem and any changes in bin classifications. Mean Cryptosporidium level for each unfiltered s ys tem. (The second round of monitoring began during the previous I CR period and continues during this ICR period.)  

### Any finding that a s ys tem is not meeting its required Cryptosporidium treatment level. 7) Ground W

ater Rule PWSs must report or provide the following additional informati on (40 CFR 141.405(a)):

 

### Failure to meet any state - specified requirements including minimum residual disinfectant concentration, membrane operating criteria or membrane integrity, and alternative treatment operating criteria, if operation in accordance with the criteria or requirements is not restored within 4 hours.  

### Completion of corrective action (within 30 days of completion).Microbial Rules ICR August 2015

3 8 Microbial Rules ICR August 2015

38  

### Documentation to the state within 30 days of a total coliform -positive sample that a PWS met the state criteria that exempt the system from source water monitoring requirements. PWSs must keep records of the following (40 CFR 141.405(b)):

 

### Documentation of corrective actions.  

### Documentation of notice to the public.  

### Documentation of records of decisions and records o f invalidation of fecal indicator-positive ground water source samples.  

### For consecutive s ys tems, documentation of notification to the wholesale system(s) of total - coliform positive samples that are not invalidated.  

### For s ys tems, including wholesale s ys tems, that are required to perform compliance monitoring, the additional requirements include the following: • Records of the state - specified minimum disinfectant residual • Records of the lowest daily residual disinfectant concentration and records of the date and duration of any failure to maintain the state -prescribed minimum residual disinfectant concentration for a period of more than 4 hours. • Records of state - specified compliance requirements for membrane filtration and of parameters specified by the state for state - approved alternative treatment, and records of the date and duration of any failure to meet the membrane operating, membrane integrity, or alternative treatment operating requirements for more than 4 hours. For records kept by

the states, the additional requirements include the following (40 CFR 142.14(d)(17)):

 

### Records of written notices of significant deficiencies.  

### Records of corrective action plans, schedule approvals and state - specified interim measures.  

### Records of confirmations that a signif icant deficiency

has been corrected or the fecal contamination in the ground water source has been addressed.  

### Records of state determinations and records of ground water s ys tems’ documentation for not conducting triggered source water monitoring.  

### Records o f invalidations of fecal indicator-positive ground water source samples.  

### Records of state approvals of source water monitoring plans.  

### Records of notices of the minimum residual disinfectant concentration (when using chemical disinfection) needed to achieve at least 4 - log virus inactivation before or at the first customer.  

### Records of notices of the state - specified monitoring and compliance requirements (when using membrane filtration or alternative treatment) needed to achieve at least 4 - log treatment of vir uses (using inactivation, removal, or a state approved combination of 4 - log inactivation and removal) before or at the first customer.  

### Records of written notices from the ground water sy stem that it provides at least 4 - log treatment of viruses (using inactivation, removal, or a state - approved combination of 4 - log virus inactivation and removal) before or at the firstMicrobial Rules ICR August 2015

39 Microbial Rules ICR August 2015

39 

### customer for each ground water source.  

### Records of written determinations that the ground water s ys tem may discontinue 4 - log treatment of viruses (using inactivation, removal, or a state - approved combination of 4 - log inactivation and removal). Additionally , the state must report the following (40 CFR 142.15):

 

### The month and year in which the most recent sanitary survey was completed or, for a state that used a phased review process, the date the last element of the applicable eight elements was evaluated for each ground water s ys tem.  

### The date the s ys tem completed the corrective action.  

### All ground water s ys tems providing at least 4 - log tre atment of viruses (using inactivation, removal, or a state - approved combination of 4 - log virus inactivation and removal) before or at the first customer for any ground water source(s). 8) Aircraft Drinking W ater Rule Air carriers are required to maintain records and submit the following items to EPA:

 

### In formation on total coliform sampling frequency and disinfection and flushing frequency .  

### Water system inventory and any subsequent changes.  

### Monitoring results for total coliform bacteria samples taken as par t of routine, repeat, and post - disinfection follow - up sampling.  

### Analy tical results for E. coli , required when total coliform results are positive.  

### Evidence of self

- inspection of water s ys tem components completed every 5 ye ars, including an indication that deficiencies have been corrected ; and , if not corrected, a description of the deficiency , an explanation of why it has not been corrected, and a schedule for correction.  

### Notification of all events requiring public notice and corrective action.  

### Failure to c ompl y with the monitoring and disinfection and flushing procedures. Air carriers are also required to maintain the following documents: 10

 

### The O&M plan for the aircraft PWS to address ADWR requirements. This plan should be inc luded in FAA's aircraft O&M program and made available for EPA review upon request.  

### The coliform sampling plan that was developed as part of their O&M plan, which must be available for EPA review upon request.  

### Any O&M plans and coliform sampling plans that must be developed for any new aircraft the air carrier acquires through purchases, ownership transfers, or any other means. These plans must be made available for EPA review upon request. 10 Burden to develop O&M plans and coliform sampling plans for existing aircraft was accounted for under the standalone ADWR ICR and is not included again under the Microbial Rules ICR as it is a one - time activity. Additionally, the number of aircraft acquired post - ADWR promulgation is assumed to be a very small percentage of the existing ADWR inventory; therefore the burden to develop new O&M and coliform sampling plans for aircraft acquired post - ADWR promulgation is assumed to be negligible.Microbial Rules ICR August 2015

40 Microbial Rules ICR August 2015

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### 4(b)(ii) Respondent Activities PWSs and primacy

agencies mu st complete the activities described in the sections below. **Public Water Systems** In general, each PWS is involved in the following collection activities:

 

### Gathering information.  

### Processing, compiling and reviewing the information collected.  

### Submitting reports and other documents.  

### Recording and maintaining the information. For this I CR, these activities are necessary to complete monitoring, reporting and recordkeeping requirements associated with microbial contaminant- related regulations. 1) Surface Water Treatment Rule Requirements for reporting under the SWTR are separated into those for s ystems that use filtration treatment and those for s ys tems that do not use filtration treatment. The reporting requirements for these types of PWSs are summarized in the paragraphs below. Unfiltered S ys tems

 

### Monitor and report information on the results of source water monitoring for total or fecal coliform and turbidity .  

### Submit this information each month that the s ys tem is in operation.  

### Summarize fecal or total colif orm monitoring b y i ncluding : • The number of total or fecal coliform samples collected and the values obtained for each measurement; • The number of results less than 20/100 milliliters (mL) for fecal coliform or less than 100/100 mLfor total coliform during the month; • The cumulative number of fecal or total coliform results obtained since the start of the six consecutive month compliance period; • And the percent of samples less than the respective performance standard for the six - month compliance period.  

### Summarize turbidity

information to include : • The maximum turbidity value obtained each month; • The value and date of each measurement that exceeded five NTUs; • And the date the occurrence was reported to the state.  

### Monitor and report disinfectant residual levels (this requirement is addressed under the DBP/Chem/Rads I CR).  

### Submit annual reports on watershed control programs and onsite inspecti ons.Microbial Rules ICR August 2015

41 Microbial Rules ICR August 2015

41 

### Filtered S ys tems

 

### Monitor and report to the state on a monthly basis information regarding CFE turbidity . Turbidity reporting requirements vary according to the filtration technology

used.  

### Monitor and report disinfectant residual levels (this requirement is addressed under the DBP/Chem/Rads I CR). 2a) Total Coliform Rule PWSs must conduct the following activities to comply with the TCR:

 

### Collect water samples at specified intervals, as defined in the federal or state regulations.  

### Collect monitoring data on the presence of total coliform bacteria in the distribution system. • Collect data on the presence or absence of E. coli or fecal coliform following a positive routine total coliform sample. • Report laboratory

results and violations to the state at frequencies required by federal and state regulations. 2b) Revised Total Coliform Rule Beginning in April 2016, EPA anticipates PWSs to be involved in the following activities :

 

### Conducting routine, additional routine, and repeat coliform monitoring and

reporting the results as required.  

### Completing a Level 1 assessment if the PWS experiences a Level 1 trigger, and submitting a form to the state to identify sanitary defects detected , corrective actions completed, and a timetable for any corrective actions not already completed. A Level 1 assessment is an evaluation to identify the possible presence of sanitary

defects, defects in distribution system coliform monitoring practices, and (when possible) the likely reason that the system triggered the assessment. It is conducted by the system operator or owner. Minimum elements include review and identification of atypical events that could affect distributed water quality or indicate that distributed water quality was impaired; changes in distribution system maintenance and operation that could affect distributed water quality (including water storage); source and treatment considerations that bear on distributed water quality, where appropriate (e.g., whether a ground water sy stem is disinfected); existing water quality monitoring data; and inadequacies in sample sites, sampling protocol, and sample processing .  

### Completing a Level 2 assessment if the PWS experiences a Level 2 trigger, and submitting a form to the state to identify sanitary defects detected, corrective actions completed, and a timetable for any corrective actions not already completed. A Level 2 as sessment provides a more detailed examination of the system (including the s ys tem’s monitoring and operational practices) than does a Level 1 assessment through the use of more comprehensive investigation and review of available information, additional int ernal and external resources, andMicrobial Rules ICR August 2015

42 Microbial Rules ICR August 2015

42 

### other relevant practices. It is conducted by an individual approved by the state, which may

include the s ystem operator. Minimum elements include review and identification of atypical events that could affect distributed water quality or indicate that distributed water quality was impaired; changes in distribution system maintenance and operation that could affect distributed water quality (including water storage); source and treatment considerations that bear on distrib uted water quality, where appropriate (e.g., whether a ground water system is disinfected); existing water quality monitoring data; and inadequacies in sample sites, sampling protocol, and sample processing.  

### Correcting sanitary

defects found through the performance of Level 1 or Level 2 assessments and report on completion of corrective actions as required . 3) Interim Enhanced Surface Water Treatment Rule S ys tems serving at least 10,000 people using surface water or ground water under the direct influence of surface water (GWUDI) are required to do the following:

 

### Conduct continuous monitoring of individual filter turbidity for each filter in the system.  

### Report individual filter turbidity monitoring results to the state at frequencies specified in the federal regulations.  

### Report exceptions to the state in cases where the monitoring shows exceedances of specific turbidity levels.  

### Perform a filter profile and/or filter assessment, or obtain a CPE if warranted.  

### Provide a CPE report to the state if necessary . 4) Filter Backwash Recycling Rule The rule requires PWSs to collect and retain on file recycle flow information for review and evaluation b y the state beginning June 8, 2004 (40 CFR 141.76(d)). 5) Long Term 1 Enhanced Surface Water Treatment Rule Under the LT1ESWTR, systems serving under 10,000 people and using surface water or GWUDI are required to do the following:

 

### Conduct continuous monitoring of individual filter turbidity for each filter in the system.  

### Record individual filter turbidimeter re adings at the specified intervals.  

### Report individual filter turbidity monitoring results to the state at frequencies specified in the federal regulations.  

### Report exceptions to the primacy agency in cases where the monitoring shows exceedances of specific turbidity levels.  

### Perform a filter profile and filter assessment, or arrange for a CPE if warranted.  

### Provide a CPE report to the state, if necessary .  

### Develop a disinfection benchmark, if necessary .  

### Consult with the state before making significant changes to disinfection practices.Microbial Rules ICR August 2015

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### 6) Long Term 2 Enhanced Surface Water Treatment Rule Under the LT2ESWTR systems are required to do the following:

 

### Submit a sampling plan for the second round of monitoring. This requirement applies to systems serving fewer than 50,000 people.  

### Monitor source water for E. coli and Cryptosporidium and calculate a treatment bin classification based on monitoring results. This requirement applies to filtered s ys tems only . S ystems serving at least 10,000 people are also required to monitor source water turbidity ; the burden for turbidity monitoring is assumed to be negligible.  

### Filtered s ys tems serving less than 10,000 people may monitor for E. coli as a trigger instead. These s ys tems will only sample for Cryptosporidium if their E. coli results exceed certain levels.  

### Unfiltered s ys tems are required to monitor source water for Cryptosporidium only and calculate treatment requirements based on monitoring results.  

### If additional treatment was installed in the previous I CR period based on the first round of bin classification, systems must demonstrate to the state that they are compl ying with the requirements for the technologies they have chosen.  

### Prepare disinfection benchmarking reports for Giardia and viruses if disinfectio n is changed. This activity will be completed during this 3 - ye ar ICR period.  

### Keep all monitoring data on file for 3 ye ars. 7) Ground W

ater Rule Under the GWR, sy stems are required to do the following:

 

### Conduct triggered source water monitoring if the system tests positive for total coliform in the distribution system under TCR, for systems not providing 4 - log treatment of viruses. Under triggered monitoring requirements (40 CFR 141.402) a system must collect at least one source water sample and have that sam ple tested for a fecal indicator specified b y the state. If a system detects the state specified fecal indicator at its source, then the s ys tem must take five additional samples within 24 hours unless the state determines that corrective action must be taken immediately .  

### Conduct source water assessment monitoring for fecal indicators if required by the state.  

### Comply

with treatment technique requirements and any associated reporting requirements if the state identifies a significant deficiency during a sanitary survey or the system has confirmed fecal contamination of its source water.  

### Monitor disinfectant residual for compliance, for sy stems providing disinfection to achieve 4 - log inactivation of viruses.  

### Maintain records of GWR information listed in se ction 4(b)(i).Microbial Rules ICR August 2015

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### 8) Aircraft Drinking W ater Rule Air carriers will need to undertake the following activities to meet reporting requirements under the ADWR:

 

### Report the development of a new sampling plan; submit new monitoring and disinfection and flushing frequency information for new purchases or transfers of ownership of aircraft; and maintain sampling plans.  

### Report changes in aircraft water s ys tem inventory within 10 day s after the end of the month in which they

occurred.  

### Take routine and repeat coliform samples and post - disinfection follow - up coliform samples following corrective action.  

### Submit routine, repeat, and post - disinfection sampling results to EPA.  

### Record routine, repeat, and post - disinfection coliform sampling activities.  

### Record disinfection and flushing activities conducted as part of routine activity or corrective action.  

### Prepare and provide public notification to passengers and crew as needed . All public notification instances must be reported to EPA.  

### Conduct a comprehensive se lf - inspection of aircraft water s ys tem components at least every

5 years.  

### Submit evidence of self - inspection to EPA, including report of deficiencies corrected and unresolved deficiencies and their correction schedule. **Primacy Agencies** In general, primacy

agencies conduct the following activities with regard to reporting and recordkeeping:

 

### Maintain an inventory of PWSs.  

### Compile results of analyses of drinking water samples.  

### Analyze and review PWS data.  

### Make determinations concerning PWSs.  

### Track PWS compliance.  

### Report sy stems not in compliance with drinking water requirements.  

### Maintain state approval of plans and specifications, enforcement activities, and variances and exemptions (V&Es) for each PWS. By conducting these activities, primacy agencies are able to evaluate a PWS s performance and identify areas of improvement . They also identify

enforcement targets and systems requiring remedial action. In addition, states are responsible for reporting comp liance data to the federal government. Some of these activities are covered in the PWSS Program ICR as general primacy

activities. Therefore, onl y microbial contaminant - specific recordkeeping activities have been included in this Microbial Rules I CR.Microbial Rules ICR August 2015

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### 1) Surface Water Treatment Rule The SWTR states that primacy agencies must conduct the following:

 

### Collect and maintain information submitted by PWSs.  

### Record which s ys tems using surface water are required to provide filtration and which are not. These records must be kept indefinitely .  

### Submit a special report to the EPA Administrator listing PWSs that are not required to filter .  

### Retain the results of microbiological contaminant anal ys es of source water samples in the same manner as other microbiological contaminant anal ytical results. 2a) Total Coliform Rule Primacy agencies are required by

the TCR to conduct the following activities:

 

### Analyze monitoring results and identify s ys tems not in compliance with either MCL(or performance criteria) or monitoring and reporting frequencies.  

### Provide in writing permission for reduced monitoring or monitoring waivers; Primacy agencies are required to maintain this information for five years .  

### Submit to the EPA Administrator a special report that lists PWS s that have received permission to reduce monitoring requirements .  

### Collect and maintain data regarding the results of sanitary survey s conducted under the TCR. 2b) Revised Total Coliform Rule Beginning in April 2016, EPA expects the states to be involved in the following activities.

 

### Tracking compliance .  

### Analyzing and reviewing PWS data .  

### Making determinations concerning PWS monitoring requirements .  

### Responding to PWSs with positive samples .  

### Recordkeeping .  

### Reviewing completed assessment forms and consulting with the PWS about the assessment form .  

### Reviewing and coordinating with PWSs to determine the optimal corrective action to be implemented .  

### Providing consultation, reviewing the public notification certification, and filing the report of the violation. 3) In terim Enhanced Surface Water Treatment Rule Primacy agencies are required to maintain records of state verification activities and each determination made and to report to EPA in accordance with state reporting requirements. InMicrobial Rules ICR August 2015

46 Microbial Rules ICR August 2015

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### addition, p rimacy

agencies ensure that PWSs are implementing the IESWTR properl y. To meet these responsibilities, states are involved in the following additional activities:

 

### Reviewing individual filter turbidity monitoring data.  

### Conducting CPEs for PWSs.  

### Conducting sanitary

survey s.  

### Consulting with PWSs on changes in disinfection practice.  

### Conducting follow - up inspections. 4) Filter Backwash Recycling Rule For the FBRR, primacy

agencies incur a recordkeeping requirement for maintaining data submitted by

conventional and direct filtration PWSs that recycle. Primacy agencies must also maintain written approval for all PWSs with alternate recycle locations. 5) Long Term 1 Enhanced Surface Water Treatment Rule Primacy agencies have the responsibility for ensuring the implementation of the LT1ESWTR (40 CFR 142.16). EPA anticipates that states will be involved in the following activities:

 

### Consulting with PWSs on changes in disinfection practice.

 

### Conducting CPEs for PWSs (if requested).  

### Conducting follow - up inspections.  

### Compliance tracking for turbidity . 6) Long Term 2 Enhanced Surface Water Treatment Rule Primacy agencies have the responsibility for ensuring the implementation of the LT2ESWTR. This will include the following activities (some of these activities will occur during future ICR periods):

 

### Maintaining and updating the data management system.  

### Reviewing s ys tem sampling schedules and proposed sampling locations.  

### Maintaining E. coli and Cryptosporidium monitoring data.  

### Responding to s ys tems’ inquiries.  

### Reviewing and approving bin classifications.  

### Reviewing disinfection profiles and benchmarks.  

### Reviewing and, in some cases, approving processes to meet bin treatment requirements.  

### Reporting the information required in section 4(b)(i).  

### Keeping records of the information in section 4(b)(i). 7) Ground W

ater Rule States will need to perform the following tasks:Microbial Rules ICR August 2015

47 Microbial Rules ICR August 2015

47  

### Perform sanitary

survey s, and reporting and recordkeeping requirements associated with performing sanitary survey s.  

### Track and fil e monitoring results and reviewing any additional reporting. 8) Aircraft Drinking W ater Rule EPA is the primacy

agency for the ADWR; EPA activities under this rule are described in section 5(a) of this document.Microbial Rules ICR August 2015

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## 5 **INFORMATION COLLECTED --**  **AGE NCY**  **ACTIVITIES, COLLECTION METHODOLOGY, AND**  **INFORMATION MANAGEMENT 5(a)**  **Agency Activities** As part of its oversight responsibility, EPA maintains SDWI S 11 

### and evaluates SDWI S data to determine s ys tem compliance. Agency personnel also reformat, distribute, and store these data for a number of uses, including responding to Congressional and public inquiries. EPA also oversees its regional and state programs, provides technical assistance, and develops policies designed to ensure consistent program implementation. EPA officials serve as respondents when testifying to Congress on the PWSS Program or in the courts for enforcement actions.EPA also acts as the enforcement authority for the ADWR. EPA oversees ADWR compliance because aircraft fl y in interstate commerce and , therefore, no single state can have primacy over an aircraft PWS, as described in 40 CFR 142.3(b). The burden associated with the 206.4 regional full time equivalents (FTEs) 12 

### covere d under the PWSS Program ICR includes the EPA ADWR burden. The Agency will be responsible for collecting the information generated as air carriers comply

with the rule. EPA activities for ADWR include the following:

 

### Train EPA staff.  

### Provide technical assi stance to air carriers.  

### Review sampling frequency and disinfection and flushing frequency information.  

### Review routine, repeat, and post - disinfection monitoring results.  

### Review information on public notification events.  

### Review aircraft water s ys tem inventory changes.  

### Review certifications and reports of air carrier self - inspections.  

### Conduct onsite compliance audits, as needed. Burden and costs for these activities are addressed in the PWSS Program ICR (OMB No. 2040 - 0090). Section 5(a) of the PWSS Program IC R contains additional detail regarding the activities supported by

the collection of SDWI S data described in the first paragraph of this section.In addition to these activities, the Agency assumes the activities performed by the state for those states, t erritories and tribes that do not have primacy . Specificall y, the Agency will be involved in the following activities related to microbial contaminant regulations:

 

### Training PWS s  

### Analyzing and reviewing PWS data.  

### Making compliance determinations concerning PWSs.  

### Conducting CPEs and sanitary survey s.
11 As mentioned in section 1 of this ICR, revisions are currently being made to SDWIS. EPA expects the revisions to streamline the reporting and recordkeeping process. Details regarding potential burden and cost reductions in future ICR periods are provided in section 5(b) of the PWSS Program ICR. 12 FTE figures were provided by OGWDW.Microbial Rules ICR August 2015

49 Microbial Rules ICR August 2015

49  

### Meeting with PWSs about changes in recycling practices.  

### Compliance tracking.  

### Recordkeeping. Burden and cost s for these activities are accounted for under the primacy agency burden (see section 6). EPA regional offices also conduct general primacy activities for states, territories and tribes that do not have primacy . This burden is addressed in the PWSS I CR and is included in the general primacy burden for primacy

agencies.Microbial Rules ICR August 2015

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### Exhibit 4 **EPA Requirements**  **Requirement Regulatory Citation**  **Frequency General Requirements (apply to all regulations)**  For states and other entities for which the Agency ma intains primacy , the Agency must ma intain the records and perform the reporting activities required of states. (This burden is addressed under primacy agency burden.) 40 CFR 142.14 and 142.15 As necessary Review state request for approval of a program revision and notify state of determination regarding request. 40 CFR 142.12(d)(3) One time, as necessary **SWTR** Publish a notice of any proposed com prehensive review of state decisions to determine if PW Ss m ust provide filtration. 40 CFR 142.80(b) As necessary Notify each state affected by the results of a com prehensive review. 40 CFR 142.80(c) As reviews are com pleted Make the results of comprehensive reviews available to the public. 40 CFR 142.80(c) As reviews are com pleted Notify the state if periodic reviews or other available information indicate that the state has abused its discretion in applying the criteria for avoiding filtration or that the state has failed to prescribe compliance schedules for PWS s that mu st provide filtration. 40 CFR 142.81(a) As necessary

Notify the state that a public hearing will be held on the notice provisions. 40 CFR 142.81(b) As necessary Publish a notice of the public hearing in the Federal Register and in a newspaper of general circulation in the involved state. 40 CFR 142.81(c) As necessary **TCR** Subject to general requirements as listed above. **RTCR** Subject to general requirements as listed above. **IESWTR** Subject to general requirements as listed above **FBRR** Subject to general requirements as listed above. **LT1ESWTR** Subject to general requirements as listed above. Publish a notice of any proposed com prehensive review of state decisions to determine if PW Ss m ust provide filtration. 40 CFR 142.80(b) As necessary Notify each state affected by the results of a com prehensive review. 40 CFR 142.80(c) As reviews are com pleted Make the results of comprehensive reviews available to the public. 40 CFR 142.80(c) As reviews are com pletedMicrobial Rules ICR August 2015

51 Microbial Rules ICR August 2015

51 **Requirement Regulatory Citation**  **Frequency** Notify the state if periodic reviews or other available information indicate that the state has abused its discretion in applying the criteria for avoiding filtration or that the state has failed to prescribe compliance schedules for PWS s that mu st provide filtra tion. 40 CFR 142.81(a) As necessary

Notify the state that a public hearing will be held on the notice provisions. 40 CFR 142.81(b) As necessary Publish a notice of the public hearing in the Federal Register and in a newspaper of general circulation in the involved state. 40 CFR 142.81(c) As necessary **LT2ESWTR** Subject to general requirements as listed above. Approving laboratories 40 CFR 141.705 As necessary Collecting and managing sampling location descriptions, sampling schedules, and mo nitoring data submitted by medium and large systems. 40 CFR 141.702(a), 141.703(f), 141.706(b) As necessary **GWR** Subject to general requirements as listed above. **ADWR** No specific EPA requirements are stated in the ADW R; however, EPA will conduct the oversight activities described previously for the ADW R. 

### 5(b) **Collection Methodology and Management** Primacy agencies must report data to EPA on a quarterl y basis. These data include any new data and revisions or corrections to existing data. This information is maintained in SDWI S 13 

### , which contains the following:

 

### Inventory

data for each PWS.  

### Violations.  

### Enforcement actions and some follow - up activity .  

### Variances and exemptions (where applicable). Primacy agencies primarily

transmit SDWI S data to EPA electronically . In the District of Columbia, Wyoming, and Indian Lands (except for the Navajo Nation, which has primacy), results of sy stem samples are sent directl y to the EPA Region. SDWI S data support a number of rule implementation and program management activities, which include the following:

 

### Using data pulled from SDWI S on a quarterl y basis, the Office of Enforcement and Compliance Assurance uses the Enforcement Targeting Tool (ETT) to generate a list of PWSs that are considered “priority s ys tems” for enforcement.

13 The public can access the violation data in SDWIS online at http://water.epa.gov/scitech/datait/databases/drink/sdwisfed/howtoaccessdata.cfm .Microbial Rules ICR August 2015

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### The ETT provides information on trends in drinking water enforcement.  

### Supporting PWSS program file reviews. During PWSS program file reviews, EPA compares SDW IS data to primacy agency data to assess the quality of the data and recommend any necessary changes in collection or reporting methodologies.  

### Promoting consistent national program implementation. The process of file reviews provides insights into the prim acy agency ’s interpretation of regulations to ensure consistent SDWA implementation. In addition to SDWI S, EPA has developed and maintains the web - based Aircraft Reporting and Compliance Sy stem (ARCS) for air carriers compl ying with the ADWR. Air carriers must report all compliance data to ARCS unless they receive permission to use another reporting method. The burden for developing this system was addressed in the standalone ICR for the ADWR (OMB control number 2040 - 0277). All costs for rule - related data management activities are addressed in the PWSS Program IC R (OMB No. 2040 - 0090). Section 5(b) of the PWSS Program ICR contains additional detail regarding the activities supported by the previously

described collection of SDWI S data. **5(c) Small E**  **ntity Flexibility** In developing this I CR, EPA considered the requirement of the Small Business Regulatory

Enforcement Fairness Act (SBREFA) to minimize the burden of information collections on small entities. The terms small entities are defined in section 601 of the Regulatory

Flexibility

Act and are listed below: 14

 

### A small business is any business that is independently owned and operated and not dominant in its field as defined b y the Small Business Administration regulations under section 3 of th e Small Business Act.  

### A small organization is any non -profit enterprise that is independently owned and operated and not dominant in its field.  

### A small governmental jurisdiction is the government of a city, county, town, township, village, school district or special district that has a population of fewer than 50,000. This definition may also include Indian Tribes. The major requirement under SBREFA is a regulatory flexibility

anal ys is (RFA) of all rules that have a “significant economic impact on a substantial number of small entities.” Since this I CR is not currentl y associated with new rules, it is not currently subject to the SBREFA. Throughout the 1992

– 1993 negotiated rulemaking process for the Stage 1 DBPR and the IESWTR and the July

1994 rule propos als , a small PWS was defined as a sy stem serving fewer than 10,000 people. This definition reflects the original 1979 standard for TTHMs, which applied only

to s ys tems serving at least 10,000 people. The definition thus recognizes that the baseline conditions from which sy stems serving fewer than 10,000 people would approach

14 These definitions were taken from section 601 of the Regulatory Flexibility Act.Microbial Rules ICR August 2015

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### disinfection by

product control and simultaneous control of microbial pathogens would be different than those for systems serving 10,000 or more people. Subsequent to the 1994 proposals, EPA defined a “small business” (for purposes of RFAs in drinking water regulations) as a PWS serving 10,000 or fewer people. This definitio n is consistent with the approach used herein and in the 1996 Congressional amendments to SDWA. EPA has made significant efforts to minimize the burden for all respondents, particularl y for small entities. In setting monitoring requirements, EPA has been able to minimize burden for small entities as detailed below. 1) Surface Water Treatment Rule Only a small percentage of small systems use surface water supplies; therefore, this rule does not have a significant economic impact on a substantial number of sm all entities. Since system size is the key

determinant of the monitoring frequency requirements of the SWTR, systems serving fewer than 3,300 people will have the least stringent monitoring requirements. EPA will allow a reduction in the frequency of turb idity

monitoring from six samples per day to one sample per day

for systems using slow sand filtration treatment or other eligible technologies. Systems serving fewer than 500 people may also reduce sampling to once per day regardless of filtration type. 2a) Total Coliform Rule The number of required coliform samples varies directl y with system size. F or CWSs, the number of samples ranges from a minimum of one sample per month for sy stems serving fewer than 1,000 people to 480 samples per month for those serving 3,960,001 or more people. This requirement is codified at 40 CFR 141.21(a). Generally , quarterl y monitoring must be conducted at NCWSs using ground water onl y and serving 1,000 or fewer people. As provided for in 40 CFR 141.21(a)(3)(i), the primacy agency may reduce the quarterl y monitoring frequency as a result of a sanitary

survey . 2b) Revised Total Coliform Rule To assess this impact, EPA conducted outreach to small entities and convened a Small Business Advocacy

Review Panel SBARP in February 2008 to obtain recommendations from representatives of the small entities that would be subject to the rule’s requirements. The panel recommended using total coliforms as a trigger for investigation and/or corrective action, balancing monitoring requirements and costs with risk, further differentiating requirements from other related rules, and considering reporting and recordkeeping costs when estimating burden. Several of these recommendations were implemented. The RTCR eliminates the MCL G and MCL for to tal coliforms and instead uses total coliforms as an indicator of the potential pathway

of contamination into the distribution system. PWSs that may be vulnerable to fecal contamination are required to do an assessment and if necessary , take appropriate co rrective action. Other provisions of the RTCR that resulted in reduced costs for small PWSs include:Microbial Rules ICR August 2015

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54  

### Reduced routine monitoring for qualifying PWSs serving 1,000 or fewer people.  

### Reduced number of repeat samples required.  

### Reduced additional routine monitoring for PWSs serving 4,100 or fewer people.  

### Reduced public notification requirements for all systems, including small systems.  

### Reductions in corrective actions over time as a result of enhanced system performance for all small systems. 3) In terim Enhanced Surface Water Treatment Rule Except for sanitary

survey requirements, which are conducted by the primacy

agency , the IESWTR only

applies to systems serving at least 10,000 people. The rule does not have a significant impact on small entitie s. 4) Filter Backwash Recycling Rule The FBRR applies to both large and small s ys tems. A s part of the economic anal ys is for the rule, EPA certified that this rule would not have a significant impact on a substantial number of small systems and , therefore , an RFA was not required. 5) Long Term 1 Enhanced Surface Water Treatment Rule The LT1ESWTR applies only to Subpart H s ys tems serving fewer than 10,000 people. After considering the economic impacts of the rule on small entities, EPA certified that this action would not have a significant economic impact on a substantial number of small entities. The Agency

determined that less than one percent of small entities will experience an impact of one percent or more of their annual revenues or expenditures. No aff ected small governmental jurisdictions are expected to incur annual costs exceeding three percent of their annual revenue. Accordingl y, an RFA was not required. 6) Long Term 2 Enhanced Surface Water Treatment Rule The LT2ESWTR allows small filtered systems to monitor for E. coli instead of Cryptosporidium . The analysis for E. coli is much less expensive than the one for Cryptosporidium . Small systems are onl y required to monitor for Cryptosporidium if E. coli concentrations are above a trigger value. In addition, systems with at least 2 years of historical Cryptosporidium data may use that data instead of performing new monitoring. 7) Ground W

ater Rule The GWR was developed in consultation with the SBARP. Several of the panel’s recommendations were incorporated into the rule. These recommendations include:

 

### Utilizing a risk targeted approach, in which onl y those sy stems most at risk are required to monitor or provide corrections.
 

### Using coliform monitoring instead of more expensive viral monitoring. Monitoring for other organisms is required o nly if coliform monitoring is positive .Microbial Rules ICR August 2015

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### 8) Aircraft Drinking W ater Rule EPA has chosen to appl y the same requirements to air carriers of all s izes. EPA has developed the ADWR to provide flexibility to all air carriers including small entities or small businesses. For example, where a maintenance frequency is not specified by

the water tank manufacturer, air carriers can choose the combination of monitoring and disinfection and flushing that accommodates existing routine aircraft maintenance schedules. The ADWR allows air carriers with positive total coliform samples 72 hours to implement disinfection and flushing as corrective action or the alter native of 24 hours to collect repeat samples. It also allows air carriers additional time before corrective action is required if they prevent public access to the water b y phys ically

shutting off or disconnecting the water s ys tem or preventing the flow of water through the taps. The rule also permits air carriers to take onl y one routine sample (instead of two) for certain aircraft with a removable/portable water tank that is drained every day where the aircraft has onl y one tap. **5(d) Collection Schedule**  The collection schedules for each rule are summarized below. Additional information may be obtained by

consulting the individual rules for specific collection schedules.Microbial Rules ICR August 2015

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### Exhibit 5 **Collection Schedule Rule**  **Collection Commencement Year** SW TR 1991/1993 (depending on filtration status) TCR 1991 – coliform monitoring 1994 – sanitary surveys for CWS s, 1999 for NCW Ss RTCR 2016 – coliform monitoring IESW TR 2002 – turbidity monitoring 2002/2004 - sanitary surveys (depending on siz e and source ty pe) FBRR 2004 – recordkeeping LT1ES WT R 2005 – turbidity monitoring LT2ES WT R 2006 – Cryptosporidium and E. coli mo nitoring first round (depends on s ys tem size; all sam pling completed by 2011) 2010 – disinfection profiling (depends on system size) 2012 – reporting for compliance with new technologies 2015 – second round of Cryptosporidium and E. coli mo nitoring GW R 2009 – sanitary survey, triggered monitoring, corrective action plans, compliance ADW R April 2011 – inventory data, sampling and O&M plan information October 2011 – coliform sampling data, dates routine disinfection and flushing are performedMicrobial Rules ICR August 2015

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## 6 **ESTIMATING BURDEN AND COST OF COLLECTION** This section estimates the burden and cost to PWSs, air carriers and primacy a gencies for compl ying with drinking water information requirements associated with microbial contaminant rulemakings. These include the following: 1) Surface Water Treatment Rule 15 

### 2) Total Coliform Rule/Revised Total Coliform Rule 3) Interim Enhanced Surface Water Treatment Rule 4) Filter Backwash Recycling Rule 5) Long Term 1 Enhanced Surface Water Treatment Rule 6) Long Term 2 Enhanced Surface Water Treatment Rule 7) Ground Water Rule 8) Aircraft Drinking Water Rule This I CR updates the annual burdens and costs associated with these rulemakings for the three - ye ar IC R period of September 1, 2015 , through August 31, 2018. This section also discusses the assumptions used to estimate cost and burden and describes the change in annual burden, as compared with the current OMB annual burden inventory . EPA has refined some of the assumptions for calculating the burden and costs associated with implementing the drinking water regulations contained in this ICR in an effort to accuratel y charact erize the burden and costs. For this update, many assumptions were revised based on program changes and well - documented changes in some data. To provide a comparable basis on which to calculate the requirements addressed b y the Microbial Rules ICR, and to address inconsistencies, EPA applied uniform assumptions to all rules where applicable. The categories of assumptions are listed below.

 

### A 2013 labor rate of $21.62 was obtained from the Bureau of Labor Statistics (BLS ) for PWSs . An overhead rate of 60 percent was applied, resulting in an hourly rate of $34.59. For states, a 2013 labor rate of $28.50 was obtained from the BLS. An overhead rate of 60 percent was applied, resulting in an hourly rate of $45.60.  

### PWS inventory

figures from the most recent frozen SDWI S database pull (October 2014).  

### Number of entry

points per s ys tem

—data from the 2006 Community Water Systems Survey

(CWSS).  

### Number of plants per s ys tem

—data from the 2006 CWSS. In addition, EPA has revised some of the estimates of burden for particul ar activities (e.g., sampling, developing reports) to reflect consultations with representatives of PWSs and states (see section 3(c)).

15 Includes all rule components except disinfectant residual monitoring and associated activities, which are included in the DDBP/Chem/Rads Rules ICR.Microbial Rules ICR August 2015

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### 6(a) **Respondent Burden 6(a)(i) Burden to Public Water Systems**  The annual PWS burden for September 1, 2015 , through August 31, 2018 , is estimated to be approximately

12.0 million hours. Exhibit 6 shows the breakdown of the annual burden hours on a rule - specific basis. The annual air carrier burden for the same time period is 0.034 million hours (see Exhibit 7). Wherever possible, activity- level burden assumptions were carried forward from previous IC Rs or were updated to reflect consultation results. However, if updated data were available (e.g., s ys tem inventories), the most recent data were used in burden calculations. Appendices B through H show the assumptions and detailed burden calculations fo r each rule. The following further describes the bases for the burden estimates for each rule. 1) Surface Water Treatment Rule Activities associated with the SWTR account for 1.77 million annual burden hours per ye ar. The assumptions used to calculate the S WTR burden are based largely on assumptions carried forward from the 2012 Microbial Rules I CR. This I CR includes burden estimates for all components of the SWTR except disinfectant residual monitoring and associated activities, which are included in the DD BP/Chem/Rads Rule I CR. For unfiltered s ys tems, burden estimates include raw water sampling for coliform, on - site inspections, watershed management and raw water turbidity monitoring. The burden for filtered systems includes onl y finished water turbidity mo nitoring. Detailed burden and cost calculations for the SWTR are provided in Appendix B. 2) Total Coliform Rule/Revised Total Coliform Rule Activities associated with the TCR and RTCR account for a burden of 4.79 million hours per year, and represent the sum of the TCR burden and the net change RTCR burden. Net change burden (i.e., incremental burden over the 1989 TCR) developed in the previou sly approved RTCR ICR for the period following the RTCR effective date of April 1, 2016, is being accounted for in this IC R. 16 

### The 3 - year period covered b y this programmatic ICR includes approximately 3 years of burden for TCR activities and 2.5 years of net change burden for RTCR activities. Note that in order to account for the full burden related to RTCR, for modeling purposes, burden related to TCR is included for the full 3 - ye ar evaluation period. TCR burden includes that incurred to conduct routine total coliform monitoring and repeat sampling for E. coli or fecal coliform. The assumptions used to calculate the TCR burden are based largely

on assumptions carried forward from the 2012 Microbial Rules I CR. RTCR net change burden (i.e., incremental burden over the 1989 TCR) includes that incurred to conduct routine monitoring, additional routine monitoring, and repeat monitoring; to perform Level 1 and Level 2 assessments; and to perform reporting and recordkeeping related to 16 The burden associated with the first 3 years of RTCR implementation was amended to the 2012 OMB approved Microbial Rules ICR on January 23, 2014. However, text and supporting appendices related to the RTCR are included in the Microbial Rules ICR for the first time.Microbial Rules ICR August 2015

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### corrective actions. The assumptions used to calculate the net change RTCR burden are based largel y on assumptions carried forward from the standalone RTCR I CR for the final rule. Note that net change burden related to RTCR PN has been removed from the RTCR standalone ICR and is accounted for under the PN Rule in the 2015 PWSS Programmatic ICR. Section 6(f)(i) describes the reasons for changes between the burden reported in the 20 12 Microbial Rules I CR and this I CR. TCR reporting and recordkeeping burden is provided in Appendix C1. RTCR net change reporting and recordkeeping burden (i.e., incremental burden over the 1989 TCR) is provided in Appendix C2. Since there are ongoing repo rting and recordkeeping requirements under the 1989 TCR, Appendix C2 also provides the additional TCR burden calculations to calculate the net change in the reporting and recordkeeping burden for PWSs to comply

with the RTCR, and are shown for informational purposes only . 3) Interim Enhanced Surface Water Treatment Rule Activities associated with the IESWTR account for a burden of 4.32 million hours per ye ar. Included in this burden are individual filter turbidity monitoring, turbidity

exceptions reporting, and conducting individual filter assessments (IFAs). The assumptions used to calculate the IESWTR burden are based largel y on the assumptions carried forward from the 2012 Microbial Rules I CR. Detailed information about assumptions, burden, and calculation s are provided in Appendix D. 4) Filter Backwash Recycling Rule No burden is estimated for PWSs for this rule. Currentl y, the rule requires PWSs to maintain records on recycle flow. The burden associated with this recordkeeping is assumed to be negligible. 5) Long Term 1 Enhanced Surface Water Treatment Rule Activities associated with the LT1ESWTR account for a burden of 0.13 million hours per year. The burden estimates for PWSs include turbidity exceptions reporting and turbidity monitoring. The assumptions used to calculate the LT1ESWTR burden are based largely on the assumptions carried forward from the 2012 Microbial Rules I CR. Detailed information about assumptions, burden, and calculations are provided in Appendix E. 6) Long Term 2 Enhanced Surface Water Treatment Rule Activities associated with the LT2ESWTR account for a burden of 0. 14 million hours per year. The burden estimates include reporting associated with demonstrating compliance with installed treatment. PWS burden estimates also account for som e of the burden associated with developing disinfection profiles and benchmarks. The initial round of monitoring for E. coli and/or Cryptosporidium was completed during a previous I CR period. The second round of monitoring will take place during this ICR p eriod. PWSs conducting monitoring are also expected to complete a sampling plan and bin recalculation. Appendix F summarizes the assumptions used to calculate the LT2ESWTR burden and provides the detailed burden and cost calculations.Microbial Rules ICR August 2015

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### 7) Ground W

ater Rule Activities associated with the GWR account for a burden of 0.86 million hours per ye ar. For ground water s ys tems providing 4 - log treatment of viruses, the burden estimates include compliance monitoring to demonstrate treatment effectiveness and associated reporting, including reports of disinfection failure. In addition, burden estimates for developing corrective action plans are included. For ground water s ys tems that do not provide 4 - log treatment of viruses, PWS burden estimates also account for burden associated with conducting triggered source water monitoring if the sy stem tests positive for total coliform in the distribution system under the TCR. PWS burden also includes the burden associated with sanitary survey s. Appendix G summarizes the assumptions used to calculate the GWR burden and provides the detailed burden and cost calculations. 8) Aircraft Drinking W ater Rule Activities associated with the ADWR account for an air carrier burden of 0.034 million hours per ye ar. The assumptions used to calculate the ADWR burden are based largely on assumptions carried forward from the standalone ADWR I CR for the final rule, which was incorporated into the 2012 Microbial Rules I CR. Air carrier burden includes sampling, reporting associated with sampling and O&M activities, self - inspection, and public notice. Appendix H summarizes the assumptions used to calculate the ADWR burden and provides the detailed burden and cost calculations. **6(a)(ii) Burden to Primacy Agencies** The annual burden for primacy agencies for September 1, 2015 , through August 31, 2018 , is estimated to be approximately 2.62 million hours. Exhibit 8 shows the annual burden hours on a rule - specific basis. Many other primacy agency

activities, such as compliance assurance and data management, cannot be divided among specific rules and are included in the PWSS Program ICR as general primacy activities. The bases for burden estimates included in this I CR are detailed below. 1) Surface Water Treatment Rule The annual state burden for the SWTR is expected to be 0.26 million hours. All of this burden is associated with review of finished water turbidity monitoring results. Estimates for primacy agency burden for the SWTR are based on assumptions carried forward from the 2012 Microb ial Rules I CR. Detailed calculations for burden and cost are shown in Appendix B.Microbial Rules ICR August 2015

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### 2) Total Coliform Rule/Revised Total Coliform Rule Activities associated with the TCR/RTCR account for a burden of 0.45 million hours per ye ar, and represent the sum of the TCR burden and the net change RTCR burden. Net change burden (i.e., incremental burden over the 1989 TCR) developed in the previously approved RTCR ICR for the period following the RTCR effective date of April 1, 2016, is being accounted for in this programmatic IC R 17 

### . The 3 - ye ar period covered by this programmatic ICR includes approximately

3 years of burd en for TCR activities and 2.5 years of net change burden for RTCR activities. Note that in order to account for the full burden related to RTCR, for modeling purposes, burden related to TCR is included for the full 3 - ye ar evaluation period. TCR burden inc ludes monitoring TCR- related activities such as reviewing routine coliform reports, E. coli and fecal coliform reports 18 

### , and additional routine sampling reports. The burden for sanitary

survey s for ground water sy stems is addressed under the GWR (see Appendix G). Sanitary

survey burden for surface water s ys tems is included under the IESWTR. Estimates for primacy

agency burden for the TCR are based on assumptions carried forward from the 2012 Microbial Rules I CR. RTCR net change burden (i.e., incremental burden over the 1989 TCR) includes responding to positive sample results; reviewing completed assessment forms required to be filed by PWSs; consulting with PWSs about their assessment form; and reviewing and coordinating w ith PWSs to determine the appropriate corrective action to be implemented and providing consultation. States must also submit information to SDWI S to assist both EPA and states in tracking PWS compliance. The assumptions used to calculate the net change RT CR burden are based largel y on assumptions carried forward from the standalone RTCR I CR for the final rule. Note that net change burden related to RTCR PN has been removed from the RTCR standalone I CR and is accounted for under the PN Rule in the 2015 PWSS Programmatic ICR. Section 6(f)(i) describes the reasons for changes between the burden reported in the 2012 Microbial Rules I CR and this I CR. TCR reporting and recordkeeping burden is provided in Appendix C1. RTCR net change reporting and recordkeeping burden (i.e., incremental burden over the 1989 TCR) is provided in Appendix C2. Since there are ongoing reporting and recordkeeping requirements under the 1989 TCR, Appendix C2 also provides the additional TCR burden calculations to calculate the net chang e in the reporting and recordkeeping burden for states to compl y with the RTCR, and are shown for informational purposes only.

17 The burden associated with the first 3 years of RTCR implementation was amended to the 2012 OMB approved Microbial Rules ICR on January 23, 2014. However, text and supporting appendices related to the RTCR are included in the Microbial Rules ICR for the first time. 18 Once the RTCR is fully implemented, systems will only conduct coliform and E. coli monitoring.Microbial Rules ICR August 2015

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### 3) Interim Enhanced Surface Water Treatment Rule Primacy agencies are expected to expend 0.96 million annual burden hours implementing requirements of the IESWTR. The assumptions used to calculate the IESWTR burden are based largel y on assumptions carried forward from the 2012 Microbial Rules I CR. The burden includes estimates for review of turbidity monitoring results and exceptions reports. Additionally , states conduct CPEs as necessary and sanitary

survey s for all surface water system s. Detailed cost and burden calculations are included in Appendix D. 4) Filter Backwash Recycling Rule No burden is estimated for states for this rule. The burden associated with the recordkeeping requirements in this rule is assumed to be negligible. 5) Long Term 1 Enhanced Surface Water Treatment Rule The annual state burden for the LT1ESWTR is expected to be 0.12 million hours. The assumptions used to calculate the LT1ESWTR burden are based largel y on assumptions carried forward from the 2012 Microbial Rul es I CR. The burden includes estimates for compliance tracking and recordkeeping of turbidity monitoring for small systems, and review of turbidity monitoring and turbidity

exceptions reports. Additionally , states conduct turbidity exceptions reporting, whi ch includes CPEs and annual exception reports for s ys tems serving 10,000 or fewer people . Detailed calculations for burden and cost are shown in Appendix E. 6) Long Term 2 Enhanced Surface Water Treatment Rule The annual state burden for the LT2ESWTR is exp ected to be 0.10 million hours. The assumptions used to calculate the LT2ESWTR burden are based largel y on assumptions carried forward from the 2012 Microbial Rules I CR. State burden includes reviewing monitoring results and assisting with and reviewing bin classifications. States will also review disinfection profiles and benchmarks for s ys tems that significantly change their disinfection practices. Appendix F summarizes the assumptions used to calculate the LT2ESWTR burden and provides the detailed burden and cost calculations.Microbial Rules ICR August 2015

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### 7) Ground W

ater Rule The annual state burden for the GWR is expected to be 0.73 million hours. The assumptions used to calculate the GWR burden are based largel y on assumptions carried forward from the standalone GWR IC R for the final rule, which was incorporated into the 2012 Microbial Rules I CR. The burden includes those activities associated with performing sanitary surveys, as well as burden to review initial compliance monitoring notification and compliance monito ring reports submitted by PWSs. In addition, states will ensure PWSs are compl ying with treatment technique requirements and any associated reporting requirements. For ground water systems that do not provide 4 - log treatment of viruses, state burden estimates also account for review of triggered source water monitoring results. L astl y, the burden includes annual administrative activities such as recordkeeping, staff training, and technical assistance to PWSs. Appendix G summarizes the assumptions used to calculate the GWR burden and provides the detailed burden and cost calculations. 8) Aircraft Drinking W ater Rule EPA is the primacy

agency for the ADWR, and has direct oversight for that rule. This burden is captured in the 206.4 regional EPA FTE included in the PWSS Program IC R. **6(b) Respondent Costs**  **6(b)(i) Cost to Public Water Systems** Exhibit 6 shows the annual costs for PWSs over the three - year ICR period. Annual costs are estimated at approximately $522.8 million, which consists of $416.0 million in labor costs, $84.8 million in O&M costs, and $22.0 million in capital costs. Exhibit 7 shows the annual costs for air carriers over the three - ye ar ICR period. Annual costs are estimated at approximately $4.2 million, which consists of $0.96 million in labor costs, $3.2 million in O&M costs, and $0.003 million in capital costs. PWS labor costs are based on the number of burden hours times the average hourly wage rate, including overhead. The average hourl y wage rate for PWSs is the rate quoted b y the BL S for Standard Occupational Classification (SOC) Code 51 - 8031, “Local Government

— Water and Liquid Waste Treatment Plant and S ys tem Operators.” The quoted rate was $21.62 in 2013 dollars (see http://www.bls.gov/oes/2013/may /oes518031.htm). In addition, 60 percent overhead was assumed, bringing the loaded rate to $34.59 in 2013 dollars. For air carriers, four labor rates are used and are all loaded b y approximately 50 percent. All rates are from the BL S in 2013 dollars (see Appendix H for SOC codes for each occupation). The first labor rate is for “Transportation, Storage, and Distribution Managers” at a loaded rate of $65.40. The second labor rate is for “Cleaners of Vehicles and Equipment” at a loaded rate of $16.48. Labor rates for “Transportation Inspectors” and “Inspectors, Testers, Sorters, Samplers, and Weighers” were also used at loaded rates of $48.95 and $27.14, respectivel y.Microbial Rules ICR August 2015

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### In addition to the labor costs, there are O&M costs associated with the SWTR, TCR/RTCR, IESWTR, LT1ESWTR, LT2ESWTR, GWR and ADWR.

 

### SWTR O&M costs reflect non - labor costs associated with coliform anal ys es (unfiltered s ys tems) and turbidity anal ys es (unfiltered and filtered s ys tems). Coliform analysis O& M costs are based on analy sis costs as listed in the GWR Economic Anal ys is. Turbidity anal ys is O&M costs are based on vendor quotes regarding calibration materials needed to perform turbidity anal ys es.  

### TCR O&M costs reflect non - labor costs associated with coliform and E. coli anal ys is.  

### RTCR O&M costs reflect net change non - labor costs associated with coliform anal ys is.  

### IESWTR O&M costs reflect non - labor costs associated with turbidity analysis for individual filters. For the IESWTR, turbidity analysis costs are based on O&M cost equations for operating an integrated supervisory control and data acquisition (SCADA) sy stem. These cost equations are carried forward from the IESWTR Regulatory

Impact Anal ys is (RIA).  

### LT1ESWTR O&M costs reflect non - labor costs asso ciated with turbidity anal ys is for individual filters.  

### LT2ESWTR O&M costs reflect non - labor costs associated with Cry ptosporidium and E. coli laboratory

analysis.  

### GWR O&M costs reflect non - labor costs associated with compliance (disinfection) monitoring (m aintenance costs, monthly reagents, charts and recorder pens) and E. coli analysis materials costs from the GWR Economic Analysis. Additionally , there are capital costs associated with SWTR, IESWTR, LT1ESWTR, GWR, and ADWR.

 

### SWTR, IESWTR and LT1ESWTR include capital costs for turbidity monitoring equipment. For these rules, capital costs are estimated based on vendor estimates and costing equations for in - line and bench - top turbidimeters, or SCADA systems needed to comply with turbidity

monitoring requirements. Capital costs are distributed evenly

across the replacement period for turbidity anal ys is equipment (estimated to be 7 years).  

### GWR includes capital costs for chlorine monitoring equipment such as chlorine anal yz er , power cord and chart recorder).  

### ADWR includes a capital cost for refrigerators purchased b y air carriers, which is distributed evenly

across the replacement period for the equipment. Further detail on the O&M and capital costs for the SWTR, TCR/RTCR, IESWTR, LT1ESWTR, LT2ESWTR, GWR and ADWR can be found in Appendices B, C1/C2, D, E, F, G and H, respectivel y. **6(b)(ii) Cost to Primacy Agencies** Exhibit 8 shows that the annual costs to primacy agencies are estimated at approximately $125.6 million. All costs incurred b y primacy agencies are labor costs. Labor costs are based on the number of burden hours times the average hourly wage rate, including overhead. Labor ratesMicrobial Rules ICR August 2015

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### in 2013 dollars are used and are loaded with a 60 percent overhead factor. A loaded labor rate of $45.60 per hour in 2013 dollars was used for state labor. The labor costs are based on the BLS SOC Code 19 - 2041, “State Government - Environmental Scientists and Specialists, In cluding Health,” an average FTE cost of $94,848, including overhead, which equates to approximately $45.60 per hour. 19 

### Inaddition, another labor rate was used for states conducting sanitary survey s and reviewing compliance monitoring results for the GWR. L oaded, this rate comes to $59.71 per hour. There are no O&M or capital costs for primacy agencies under this I CR. **Exhibit 6 An**  **nual PWS Burden and Cost September 1, 2015**  **– Au**  **gust 31, 2018**

**Activity Annual**  **Burden**

**Hours Cost** 

**Annual Responses** 

**Annual L**  **abor Cost ($K)**  **Annual O&M Cost**

**($K) Annual** 

**Capital Cost**  **($K) Total** 

**Annual Cost ($K)**  SWTR 1,773,186 $61,338 $4,640 $2,318 $68,297 17,737,514 TCR/RTCR 4,792,580 $165,785 $42,127 N/A $207,912 3,673,598 IESWTR 4,322,149 $149,512 $18,467 $17,228 $185,207 3,818,305 LT1ESWTR 133,839 $4,630 $2,990 $2,343 $9,963 311,346 LT2ESWTR 144,525 $4,904 $9,764 N/A $14,668 72,023 GWR 860,961 $29,782 $6,843 $89 $36,714 1,460,940 **TOTAL 12,027,240**  **$415,950 $84,830**  **$21,979 $522,759**  **27,073,725** Note: Detail may not add exactly to totals due to rounding. 

### Exhibit 7 **An nual**  **Ai r Carrier Burden and Cost**  **September 1, 2015 –**  **Au gust 31, 2018** 

**Activity A**  **nnua l B**  **urden**

**Hours Cost**  **Annual Responses**

**Annual Labor**  **Cost ($K) Annual** 

**O&M ($K)**  **($K) Annual** 

**Capital Cost**  **($K) Total** 

**A nnual**  **Cost ($K)** ADWR 34,340 $956 $3,205 $3 $4,163 133,803 **TOTAL 34,340**  **$956 $3,205**  **$3 $4,163**  **133,803**

19 According to the ICR Handbook, an employee works an average of 2,080 hours in one year.Microbial Rules ICR August 2015

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### Exhibit 8 **An nual Primacy** 

**A gency**  **Burden and Cost September 1, 2015**  **– Au**  **gust 31, 2018**

**Activity Annual**  **B urden** 

**Hours Cost** 

**Annual Responses**

**Annual Labor Cost ($K)**  **Annual O&M**

**Cost ($K) Annual** 

**Capital Cost**  **($K) Total Annual** 

**Cost ($K)** SWTR 264,421 $12,058 N/A N/A $12,058 75,100 TCR/RTCR 448,931 $20,477 N/A N/A $20,477 1,797,380 IESWTR 964,787 $43,994 N/A N/A $43,994 71,283 LT1ESWTR 115,789 $5,280 N/A N/A $5,280 64,830 LT2ESWTR 100,317 $4,574 N/A N/A $4,574 217 GWR 727,772 $39,201 N/A N/A $39,201 32,952 **TOTAL 2,622,018**  **$125,585 N/A**  **N/A $125,585**  **2,041,762** Note: Detail may not add exactly to totals due to rounding. 

### 6(c) **Agency Burden and Costs** Burden and costs to the federal government are incurred b y EPA’s drinking water program at Headquarters and EPA Regions to assist primacy agencies in implementing drinking water regulations. EPA burden and costs for on - going general activities for all EPA drinking water regulations are accounted for under the PWSS Program ICR. Burden and costs included in the PW SS Program ICR cover all cross - cutting (non - rule specific) regulatory activities associated with compliance tracking, regulatory enforcement, and rule development activities. There are no rule - specific activities expected for EPA under any of the rules cov ered b y this ICR, except for EPA’s oversight of air carriers for the ADWR. EPA’s burden under the ADWR is shown for informational purposes in Appendix H; however, this burden is not included in the total burden for the ADWR. As explained above and in secti on 5(a), EPA ADWR burden is accounted for in the PWSS Program ICR. **6(d) Estimating Respondent Universe and Total Burden and Costs**  Respondents for this I CR include PWSs, air carriers and primacy agencies. The number of PWS respondents is 149,765, 20 

### the number of active PWSs. All PWSs are subject to the TCR and RTCR but are not necessaril y subject to each of the other information collection requirements contained in this I CR. Each rule associated with this I CR identifie s the ty pes of PWSs that are subject to that particular requirement. The numbers, by ty pe of PWSs affected for each rule, are identified in the appendices. The number of air carrier respondents is 42. Note that air carriers are respondents for the ADWR only.

20 Source: SDWIS/FED Data from October 2014.Microbial Rules ICR August 2015

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### In addition to the PWS and air carrier respondents, this I CR assumes 57 primacy agencies (50 states plus the District of Columbia, U.S. territories, and Navajo Nation). 21 

### Therefore, the total number of respondents is 149,864. The total costs and burden for these respondents are summarized in Exhibits 6, 7, and 8. **6(e) Bottom Line Burden Hours and Costs**  The bottom line burden hours and costs for this ICR are presented in Exhibit 9. The total annual respondent burden associated with this I CR, which includes burden for PWSs, air carriers and primacy

agencies, is estimated to be approximately 14.7 million hours. The corresponding total annual re spondent costs are estimated to be $652.5 million. The annual capital and O&M costs are approximately $110.0 million.

21 For several of these entities, primacy activities are actually implemented by EPA regional offices. However, as a simplifying assumption, they are included with the states for respondent calculations under this ICR.Microbial Rules ICR August 2015

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### Exhibit 9 **Bottom Line A nnual Burden and Cost**  **September 1, 2015 –**  **Au gust 31,**  **2018 Annual Number of Respondents**  **149,864** (=) Existing PWSs 149,765 (+) 42 (+) Existing Air Carriers 57 Primac y agencies **Total Annual Responses**  **29,249,289** (=) PWS responses (see Exhibit 6) 27,073,725 (+) 133,803 (+) Air Carrier responses (see Exhibit 7) 2,041,762 Primac y agency responses (see Exhibit 8) **Number of Responses per**  **195.2** (=) Total annual responses from above **Respondent** 29,249,289 (/) 149,864 Total number of respondents from above **Total Annual Respondent Hours**  **14,683,598** (=) PWS hours (see Exhibit 6) 12,027,240 (+) 34,340 (+) Air Carrier hours (see Exhibit 7) 2,622,018 Primac y agency hours (see Exhibit 8) **Hours per Response**  **0.50** (=) Total annual respondent hours from above 14,683,598 (/) 29,249,289 Total annual responses from above **Annual O&M and Capital Cost $110,017**  (=) Total PWS O&M costs (see Exhibit 6) **($K) 1**  $84,830 (+) $21,979 (+) Total PWS capital costs (see Exhibit 6) $3,205 (+) Total Air Carrier O&M costs (see Exhibit 7) $3 Total Air Carrier capital costs (see Exhibit 7) **Total Annual Respondent Cost ($K)**  **$652,507** (=) For PWSs (see Exhibit 6) $522,759 (+) $4,163 (+) For Air Carriers (see Exhibit 7) $125,585 For primacy agencies (see Exhibit 8) **Total Annual Hours (resp. plus**  **14,683,598** (=) Total annual respondent hours from above **Agency)** 14,683,598 (+) 0 Total EPA hours **Total Annual Cost ($K) (resp. plus $652,507**  (=) Total annual respondent cost from above **Agency)** $652,507 (+) $0 Total EPA cost Note: Detail may not add exactly to totals due to rounding. 1 No Primacy Agency capital or O&M costs are incurred, see Exhibit 8.Microbial Rules ICR August 2015

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### 6(f) **Reasons for Change in Burden** This section presents the change in burden and explains the reasons for the change in burden. The discussion is divided into two parts:

 

### Section 6(f)(i) summarizes the burden adjustments made (b y addition of new rules) since the 2012 Microbial Rules I CR (see Exhibit 11).

 

### Section 6(f)(ii) summarizes burden adjustments to each rule since the 2012 Microbial Rules I CR (see Exhibits 12 through 14). Exhibit 10 summarizes how each of these changes affects the overall burden inventory for the Microbial Rules ICR. **Exhibit 10 Summary** 

**of Changes in A nnual Burden**  **(Includes PWS, A ir Carrier**  **and Primacy A** **gency Burden)**  **Type of Change Burden (hours)**  **Running Total Comment**  Burden Estimated in the 2012 Microbial Rules ICR 12,930,414 12,930,414 This burden serves as the baseline 2 for the 2015 Microbial Rules ICR. Restructuring Adjustments

– see Section 6(f)(i) 839,526 13,769,940 Burden for RTCR is now included in this ICR3

. Other Adjustments to Burden

–see Section 6(f)(ii) 913,659 14,683,598 Burden for which EPA seeks approval in this ICR. Notes: (1) Detail may not add exactly to totals due to rounding. (2) Burden requested in the 2012 Microbial Rules ICR (12,930,414 hours is used as a starting point for the 2015 Microbial Rules ICR. (3) Burden associated with the first 3 years of RTCR implementation (839,526 hours) was amended to the 2012 OMB approved Microbial Rules ICR on January 23, 2014. 

### 6(f)(i) Restructuring Adjustments Restructuring adjustments have been made to consolidate the burden for the regulation being incorporated into the Microbial Rules ICR. These adjustments are discussed below and summarized in Exhibit 11.

 

### Net change burden associated with the RTCR. The final RTCR was promulgated February 13, 2013, and the net change burden associated with the first 3 years post rule promulgation (839,526 hours) was amended to the 2012 OMB approved Microbial Rules I CR on January 23, 2014. This represents the RTCR net change burden (i.e., incremental over the 1989 TCR) from the 2013 OMB approved standalone RTCR I CR to perform implementation - related activities.Microbial Rules ICR August 2015

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### Exhibit 11 **Restructuring Ad** **justments to the A nnual Burden**  **Inventory for the Microbial Rules ICR (Includes PWS, A**  **ir Carrier and Primacy A** **gency Burden)**  **Action Annual Burden Hours**  **Brief Explanation** N/A 12,930,414 Inventory for the 2012 Microbial Rules ICR 2 carried forward as the baseline for 2015 Microbial Rules ICR (includes PWS, state, and air carrier burden). Add 839,526 Microbial Rules ICR amended with RTCR net change burden3 on January 23, 2014. **Total 13,769,940**  **Current opening inventory for the 2015 Microbial Rules ICR (based**  **on current burden inventories.)**  Notes: (1) Detail may not add exactly to totals due to rounding. (2) Burden requested in the 2012 Microbial Rules ICR (12,930,414 hours is used as a starting point for the 2015 Microbial Rules ICR. (3) This represents the RTCR net change burden (i.e., incremental over the 1989 TCR) from the 2013 OMB - approved standalone ICR to perform implementation - related activities. 

### 6(f)(ii) Other Burden Adjustments Changes in calculated burden are a result of updating relevant baseline information for each rule with the most current and accurate information available (e.g., PWS inventories) and updating to 2013 labor rates. Where appropriate, estimated violation, waiver, and other associated rates have also been updated to reflect current information on rule compliance. Burden also may

have changed as a result of consultation with water industry representatives and due to changes in rule requirements. Exhibits 12 - 14 summarize reasons for these changes and quantify the changes by

rule. B urden adjustments associated with PWS activities resulted in a burden increase of 943,903 hours and are detailed in Exhibit 12. Burden adjustments associated with air carrier activities resulted in a burden decrease of 747 hours and are detailed in Exhibit 13. Burden adjustments for primacy

agencies result in a decrease of 29,498 hours per year, as shown in Exhibit 14.Microbial Rules ICR August 2015

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### Exhibit 12 **Ad justments to PWS Burden from Previous ICR Estimates** 

**Activity 2012 Annual** 

**Burden Estimate**  **(Hours) 2015**  **Annual**

**Burden Estimate**  **(Hours) Change** 

**in Burden**  **Reason for Change in Burden** SWTR 1,783,619 1,773,186 (10,433) The change in burden is attributable to the use of updated system inventories. Note that the overall system inventory has decreased since the previous ICR.

T CR/RTCR2 4,256,101 4,792,580 536,478 For purposes of this Microbial Rules ICR, the total burden associated with the TCR/RTCR is equal to the sum of the TCR burden over three years plus the net change in RTCR burden over 2.5 years. This assumption was made to ensure the model accurately reflected the full burden for TCR/RTCR. The change in TCR burden is attributed to the adjustments made in the modeling inputs to account for updated PWS inventory and total coliform MCL violations reported to SDWIS. This information was obtained from an October 2014 SDWIS data pull. I n addition, the increase in the RTCR burden is attributed to the rule requirements such as conducting routine, additional routine, and repeat monitoring; Level 1 and Level 2 assessments, reporting and recordkeeping requirements related to corrective actions; and comp letion of start -up activities.

IESWTR 4,280,585 4,322,149 41,564 IESWTR applies to surface water systems serving more than 10,000 people. The increase in IEW STR burden is attributed to the increase in the number of surface water PWSs serving more than 10,000 people.

FBRR 0 0 0 Existing systems should have completed requirements associated with changing the recycle return location no later than 2006. New PWSs will design their plants to meet the se requirements. The burden is negligibl e. LT1ESWTR 138,391 133,839 (4,552) The decrease in LT1ESWTR burden is attributed to the estimated decrease in the number of surface water PWSs serving less than 10,000 people using conventional or direct filtration.

LT2ESWTR 43,039 144,525 10 1,486 This ICR accounts for all the PWSs that installed new technologies as a result of the first round of LT2ESWTR source water monitoring and are now complying with reporting requirements associated with these treatment changes. I n addition, PWSs will be condu cting the second round of Cryptosporidium monitoring during this ICR period. The LT2ESWTR burden also accounts for changes in the PWS inventory.

GWR 581,601 860,961 279,360 The increase in GWR burden is attributed to the increase in number of systems adding 4 - log disinfection and conducting compliance monitoring during this ICR period. The number of systems conducting compliance monitoring is expected to increase each year po st - GWR promulgation as more entry points install 4 - log disinfection. I n addition, the burden also accounts for changes in the PWS inventory. **TOTAL 11,083,337**  **12,027,240 943,903**  **Adjusted PWS Burden.** Notes: (1) Detail may not add exactly to total due to independent rounding. (2) System Burden associated with the first 3 years of RTCR implementation (747,848 hours) was amended to the 2012 OMB - approved Microbial Rules ICR on January 23, 2014 and is included in the previous annual burden estimate listed above. N et change burden and costs (i.e. incremental costs over the 1989 TCR) developed in the standalone RTCR ICR (OMB Control Number 2040 - AD94) for the period following the RTCR effective date of April 1, 2016 are being incorporated into the 2015 Microbial Rules ICR. Note that net change burden related to RTCR PN has been removed from the RTCR standalone ICR and is accounted for under the PN Rule in the 2015 PWSS Programmatic ICR.Microbial Rules ICR August 2015

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### Exhibit 13 **Ad justments to**  **Ai r Carrier Burden from Previous ICR**  **Estimates**

**Activity 2012**  **Annual**

**Burden Estimate**  **2015 Annual** 

**Burden Estimate**  **Change in**

**Burden Reason for Change in Burden**  ADWR 35,087 34,340 (747) The change in burden is attributed to the use of updated aircraft inventory and revised estimated rates of total coliform positive occurrence based on actual field data in ARCS. **TOTAL 35,087**  **34,340 (747)**  **Adjusted Air Carrier Burden** 

### Exhibit 14 **Ad justments to Primacy**  **A gency** **Burden from Previous ICR Estimates** 
**Activity 2012**  **Annual**

**Burden Estimate**  **(Hours) 2015 Annual** 

**Burden Estimate**  **(Hours) Change in** 

**Burden Reason for Change in Burden**  SWTR 266,889 264,421 (2,467) The change in burden is attributable to the use of updated system inventories. Note that the overall system inventory has decreased since the previous ICR, and the state burden is based on the system inventory.

TCR/RTCR2 550,615 448,931 (101,684) For purposes of this Microbial Rules ICR, the total burden associated with the TCR/RTCR is equal to the sum of the TCR burden over three years plus the net change in RTCR burden over 2.5 years. This assumption was made to ensure the model accurately reflected the full burden for TCR/RTCR. The change in TCR burden is attributed to the adjustments made in the mo deling inputs to account for updated PWS inventory and total coliform MCL violations reported to SDWIS. This information was obtained from

an October 2014 SDWIS data pull. In addition, the increase in the RTCR burden is attributed to the rule requirements such as conducting routine, additional routine, and repeat monitoring; Level 1 and Level 2 assessmen

ts, reporting and recordkeeping requirements related to corrective actions; and completion of start - up activities. States must also submit information to SDWIS to assist both EPA and states in tracking PWS compliance. The decrease in RTCR burden is attributed to the completion of state start - up activities related to implementation prior to the time period covered by this ICR.

IESWTR 947,908 964,787 16,879 IESWTR applies to surface water syste ms serving more than 10,000 people, and the state burden is based on the number of syste ms complying with the rule. Since the previous ICR, the number of large surface water systems has increased, resulting in an increase in state burden. FBRR 0 0 0 States have completed the review and recordkeeping associated with the FBRR. The burden is ne gligible. LT1ESWTR 119,237 115,789 (3,448) The change in burden results from updated system inventories. The state burden is based on the system inventory .

LT2ESWTR 28,642 100,317 71,675 This ICR accounts for all the PWS s that installed new technologies as a result of the first round of LT2ESWTR source water monitoring and are now complying with reporting requirements associated with these treatment changes. In addition, PWS s will be conducting the second round of Cryptos

poridium mo nitoring during this ICR period. The LT2ESWTR burden also accounts for changes in the PWS inventory.

GWR 738,226 727,772 (10,453) The change in burden is attributable to the use of updated system inventories. The overall system inventory has decreased since the previous ICR, and the state burden for some rule components is based on the system inventory. Although system burden related to compliance mo nitoring increases each year post - GWR promulgation as more entry points add 4 - lo g disinfection, the state burden for compliance monitoring report review (disinfection failure) re ma ins relatively consistent. **TOTAL 2,651,516**  **2,622,018 (29,498)**  **Adjusted Primacy Agency Burden** Note: (1) Detail may not add exactly to totals due to rounding. (2) Note that the state burden associated with the first 3 years of RTCR implementation (91,678 hours) was amended to the 2012 OM B - approved Microbial Rules ICR on January 23, 2014 and is included in the previous annual burden estimate listed above. Net change burden and costs (i.e., incr emental costs over the 1989 TCR) developed in the standalone RTCR ICR (OMB Control Number 2040 - AD94) for the period following the RTCR effective date of April 1, 2016, are being incorporated into the 2015 Microbial Rules ICR. Note that net change burden related to RTCR PN has been removed from the RTCR standalone ICR and is accounted for under the PN Rule in the 2015 PWSS Programm atic ICR.Microbial Rules ICR August 2015

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### Exhibit 15 shows the effects of these adjustments on the bottom line burden. Adding 943,903 hours to account for adjustments to PWS burden, subtracting 747 hours to account for adjustments to air carrier burden and subtracting 29,498 hours to account for adjustments to primacy agency burden yields 14,683,598 hours. **Exhibit 15 Ad** **justments to An**  **nual Burden Carried Forward from Previous ICR Estimates (Includes PWS, A**  **ir Carrier and Primacy A** **gency Burden)**  **Action Annual Burden Hours**  **Brief Explanation** None 13,769,940 2012 Microbial Rules ICR inventory based on current burden inventories (see Exhibit 11). Add 943,903 Adjustment to the PWS burden carried forward from previous ICRs (see Exhibit 12). Add (747) Adjustment to Air Carrier burden carried forward from previous ICR (see Exhibit 13) Add (29,498) Adjustment to the primacy agency burden carried forward from previous ICRs (see Exhibit 14). **Total 14,683,598**  **Hours requested in 2015 Microbial Rules ICR (see Exhibit 10).** Note: Detail may not add exactly to totals due to rounding. 

### 6(g) **Burden Statement** The public reporting burden for collections included in this I CR is detailed in Exhibit 15 above. The annual respondent burden is estimated to average approximately 14.68 million hours, of which 12.03 million hours are attributable to PWSs, 0.034 million hours to air carriers and 2.62 million hours to primacy agencies (numbers may

not add due to rounding). These estimates include time for gathering information as well as developing and maintaining records. Burden means the total time, effort, or financial resources expended b y people to generate, maintain, retain, disclose, or provide information to or for a federal agency . This includes the time needed to review instructio ns; develop, acquire, install, and utilize technology , and sy stems for the purposes of collecting, validating, and verifying information; processing and maintaining information and disclosing and providing information; adjust the existing way s to comply wi th any previously

applicable instructions and requirements; train personnel to be able to respond to a collection of information; search data sources; complete and review the collection of information; and transmit or otherwise disclose the information. An agency may not conduct or sponsor, and a person is not required to respond to, a request for information collection unless it displays a currently valid OMB control number. The OMB control numbers for EPA’s regulations are listed in 40 CFR Part 9 and 48 C FR Part 15. To comment on the Agency ’s need for this information, the accuracy of the provided burden estimates, and any suggested methods for minimizing respondent burden, including the use of automated collection techniques, EPA has established a public docket for this I CR under Docket ID Number EPA - HQ - OW - 2011 - 0442, which is available for online viewing at www.regulations.gov , or in person viewing at the Water Docket in the EPA Docket Center (EPA/DC), WJC We st, Room 3334, 1301 Constitution Ave., NW, Washington, DC. The EPAMicrobial Rules ICR August 2015

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### Docket Center Public Reading Room is open from 8:30 a.m. to 4:30 p.m., Monday through Friday , excluding legal holidays. The telephone number for the Reading Room is (202) 566 - 1744, and the telephone number for the Water Docket is (202) 566 - 2426. An electronic version of the public docket is available at www.regulations.gov . This site can be used to submit or view public comments, to access the index listing of the contents of the public docket, and to access those documents in the public docket that are available electronically . When in the system, select “search,” then key in the Docket ID Number identified above. Comments can also be sent to the Office of Information and Regulatory Affairs, Office of Management and Budget, 725 17th Street, NW, Washington, DC 20503, Attention: Desk Officer for EPA. Please include the EPA Doc ket ID Number (EPA - HQ - OW - 2011 - 0442) and the OMB Control Number 2040 - 0205 in any correspondence.