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Appendix A to Part 127

[DRAFT FOR SUPPLEMENTAL NOTICE – REDLINE/STRIKEOUT VERSION]

 

The following two tables identify the minimum set of data that states, tribes, territories, and NPDES-regulated entities must 

electronically report to the designated initial recipient (NPDES authorized program or EPA) [see 40 CFR 127.2(b)]. Use of these two 

tables ensures that there is consistent and complete reporting nationwide, and expeditious collection and processing of the data, 

thereby making it more accurate and timely. Taken together, these data standardizations and the corresponding electronic reporting 

requirements in 40 CFR 3, 122, 123, 127, 403, and 503 are designed to save the NPDES authorized programs considerable resources, 

make reporting easier for NPDES-regulated entities, streamline permit renewals (as permit writers typically review previous 

noncompliance events during permit renewal), ensure full exchange of NPDES program data between states and EPA to the public, 

improve environmental decision-making, and protect human health and the environment.

Instructions: Table 1 provides the list of data sources and minimum submission frequencies for the ten different NPDES Data 

Groups. Table 2 provides the data that must be electronically reported for each of these NPDES Data Groups. The use of each data 

element is determined by identifying the number(s) in the column labeled “NPDES Data Group Number” in Table 2 and finding the 

corresponding “NPDES Data Group Number” in Table 1. For example, a value of “1” in Table 2 means that this data element is 

required in the transmission of data from the NPDES program to EPA (Core NPDES Permitting, Compliance, and Enforcement Data).

Likewise, a value of “1 through 10” in Table 2 means that this data element is required in all ten NPDES data groups.
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Table 1: Data Sources and Regulatory Citations 1

NPDES 

Data 

Group

Number 2

NPDES Data Group Program Area Data Provider Minimum Frequency 3

1

Core NPDES Permitting, Compliance, and 

Enforcement Data [40 CFR 122, 123, 403, 503]

All NPDES 

Program Sectors

Authorized NPDES 

Program

Within 30 days of the completed activity

or within 30 days of receipt of a report

from a regulated entity [see 127.23(a)(1)].

However, the frequency associated with any 

particular permittee may be considerably 

less [e.g., once every five years for most 

permit information].

2

General Permit Reports [Notices of Intent to 

discharge (NOIs); Notices of Termination 

(NOTs); No Exposure Certifications (NECs); 

Low Erosivity Waivers (LEWs)] [40 CFR 

122.28 and 124.5]

All NPDES 

Program Sectors NPDES Permittee

Prior to General Permit Issuance, 

Consideration for Permit Exclusion or 

Waiver from Permitting, and Permit 

Coverage Termination

3

Discharge Monitoring Reports [40 CFR 

122.41(l)(4)]

Most NPDES 

Program Sectors NPDES Permittee

At least annual, although a more frequent 

submission required in the permit would 

apply

4

Biosolids Annual Program Reports [40 CFR 

503] Biosolids

NPDES Regulated 

Biosolids Generator 

and Handler

Annual

5

Concentrated Animal Feeding Operation 

(CAFO) Annual Program Reports [40 CFR 

122.42(e)(4)]

CAFO CAFO Annual

6

Municipal Separate Storm Sewer System (MS4) 

Program Reports [40 CFR 122.34(g)(3) and 

122.42(c)]

MS4 NPDES Permittee

Year two and year four of permit coverage 

(Small MS4), Annual (Medium and Large 

MS4)

7

POTW Pretreatment Program Annual Reports

[40 CFR 403.12(i)] Pretreatment POTW Pretreatment Control Authority Annual
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Table 1: Data Sources and Regulatory Citations 1

NPDES 

Data 

Group

Number 2

NPDES Data Group Program Area Data Provider Minimum Frequency 3

8

Significant Industrial User Compliance Reports 

in Municipalities Without Approved 

Pretreatment Programs [40 CFR 403.12(e) and 

(h)]

Pretreatment Significant Industrial 

User Bi-Annual 

9

Sewer Overflow Event Reports [40 CFR 

122.41(l)(6) and (7)] Sewer Overflows NPDES Permittee

Within 5 days of the time the permittee 

becomes aware of the sewer overflow event 

(health or environment endangerment), 

Monitoring report frequency specific in 

permit (all other sewer overflow events)

10 CWA 316(b) Annual Reports [40 CFR 125 

Subparts I, J and N]

CWA Section 

316(b) NPDES Permittee Annual

Note 1: NPDES regulated entities regulated by a NPDES permit will comply with all reporting requirements in their respective NPDES permit. 2

Note 2: Use the “NPDES Data Group Number” in this table and the “NPDES Data Group Number” column in Table 2 to identify the source of the required data 

entry. EPA notes that electronic systems may use additional data to facilitate electronic reporting as well as management and reporting of electronic data. For 

example, NPDES permittees may be required to enter their NPDES permit number (“NPDES ID” – NPDES Data Group 1 and 2) into the applicable electronic 

reporting system in order to identify their permit and submit a Discharge Monitoring Report (DMR - NPDES Data Group 3). Additionally, NPDES regulated 

entities may be required to enter and submit data to update or correct erroneous data. For example, NPDES permittees may be required to enter new data 

regarding the Facility Individual First Name and Last Name (NPDES Data Group 1 and 2) with their DMR submission when there is a facility personnel change.

Note 3: The applicable reporting frequency is specified in the NPDES permit or control mechanism, which may be more frequent than the minimum frequency 

specified in Table 1.

Note 4: NPDES regulated entities that have no historical record (e.g., “greenfield” facilities) do not need to provide data elements that rely on historical data 

elements. For example, the following data element relies on historical data: Biosolids or Sewage Sludge Amount (Permit) - The amount of biosolids (in dry

metric tons) produced by the permitted facility in the preceding 365-day period for each different type of biosolids and sewage sludge generated by the facility.
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Note 5: For the purposes of this Appendix, biosolids refers to treated or processed domestic sewage sludge.

Note 6: Authorized states will be the data provider in the event an event where the regulated entity is covered by a waiver from electronic reporting.
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Basic Facility Information

(Note: As indicated in the “CWA, Regulatory, or Other Citation” column, some of these data elements apply to Significant Industrial Users (SIUs) and 

Categorical Industrial Users (CIUs) when EPA or the State is the Control Authority).

Facility Type of 

Ownership

The code/description identifying the type of facility (e.g., state government, municipal 

or water district, Federal facility, tribal facility). This data element is used by the EPA

data system to populate the Permit Facility Type data element (i.e., POTW, Private, 

Non-POTW, and Federal).

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Site Name

The name of the facility. This data element includes facilities that are Significant 

Industrial Users (SIUs) and Categorical Industrial Users (CIUs) that discharge

(including truck transportation) to one or more POTWs and to facilities or locations that 

generate or receive biosolids or sewage sludge.

122.21, 122.21(j)(6),

122.21(q), 

122.28(b)(2)(ii), 

122.44(j), 403.8(f), 

403.10, 403.12(i), 

503.18, 503.28, 503.48

1,2, 4, and 

7

Facility Site Address

The address of the physical facility location. This data element includes facilities that 

are Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs) that 

discharge (including truck transportation) to one or more POTWs and to facilities or 

locations that generate or receive biosolids or sewage sludge.

122.21, 122.21(j)(6), 

122.21(q), 

122.28(b)(2)(ii), 

122.44(j), 403.8(f), 

403.10, 403.12(i), 

503.18, 503.28, 503.48 

1,2, 4, and 

7

Facility Site City

The name of the city, town, village, or other locality, when identifiable, within whose 

boundaries (the majority of) the facility site is located. This is not always the same as 

the city used for USPS mail delivery. This data element includes facilities that are 

Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs) that 

discharge (including truck transportation) to one or more POTWs and to facilities or 

locations that generate or receive biosolids or sewage sludge.

122.21, 122.21(j)(6), 

122.21(q), 

122.28(b)(2)(ii), 

122.44(j), 403.8(f), 

403.10, 403.12(i), 

503.18, 503.28, 503.48 

1,2, 4, and 

7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Facility Site State 

The U.S. Postal Service (USPS) abbreviation that represents the state or state equivalent 

for the U.S. where the facility is located. This data element includes facilities that are 

Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs) that 

discharge (including truck transportation) to one or more POTWs and to facilities or 

locations that generate or receive biosolids or sewage sludge.

122.21, 122.21(j)(6), 

122.21(q), 

122.28(b)(2)(ii), 

122.44(j), 403.8(f), 

403.10, 403.12(i), 

503.18, 503.28, 503.48 

1,2, 4, and 

7

Facility Site Zip Code

The combination of the 5-digit Zone Improvement Plan (ZIP) code and the 4-digit 

extension code (if available) where the facility is located. This data element includes 

facilities that are Significant Industrial Users (SIUs) and Categorical Industrial Users 

(CIUs) that discharge (including truck transportation) to one or more POTWs and to 

facilities or locations that generate or receive biosolids or sewage sludge.

122.21, 122.21(j)(6), 

122.21(q), 

122.28(b)(2)(ii), 

122.44(j), 403.8(f), 

403.10, 403.12(i) , 

503.18, 503.28, 503.48 

1,2, 4, and 

7

Facility Site Tribal Land 

Indicator

The Bureau of Indian Affairs code for every unit of land trust allotment (“tribal land”) 

within Indian Country. This code will identify whether the facility is on tribal land and 

the name of the American Indian tribe or Alaskan Native entity (if applicable).

122.21, 122.28(b)(2)(ii) 1,2, and 4

Facility Site Longitude

The measure of the angular distance on a meridian east or west of the prime meridian 

for the facility. Entered in either Decimal Degrees or in Degrees Minutes Seconds; 

stored in decimal degrees (e.g., -77.029289) and in accordance with Environmental 

Data Standards Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, 

January 6, 2006. This data element includes facilities that are Significant Industrial 

Users (SIUs) and Categorical Industrial Users (CIUs) that discharge (including truck 

transportation) to one or more POTWs and to facilities or locations that generate or 

receive biosolids or sewage sludge. This data element will also be used to describe the 

two-dimensional area (polygon) regulated by a municipal storm sewer system (MS4)

NPDES permit through use of multiple latitude and longitude coordinates.

122.21, 122.21(q), 

122.28(b)(2)(ii), 503.18, 

503.28, 503.48

1,2, and 4
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Facility Site Latitude

The measure of the angular distance on a meridian north or south of the equator for the 

facility. Entered in either Decimal Degrees or in Degrees Minutes Seconds; stored in 

decimal degrees (e.g., 38.893829) and in accordance with Environmental Data 

Standards Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, 

January 6, 2006. This data element includes facilities that are Significant Industrial 

Users (SIUs) and Categorical Industrial Users (CIUs) that discharge (including truck 

transportation) to one or more POTWs and to facilities or locations that generate or 

receive biosolids or sewage sludge. This data element will also be used to describe the 

two-dimensional area (polygon) regulated by a municipal storm sewer system (MS4) 

NPDES permit through use of multiple latitude and longitude coordinates

122.21, 122.21(q), 

122.28(b)(2)(ii) , 

503.18, 503.28, 503.48

1,2, and 4

Facility Site Source Map 

Scale Number

The proportional distance on the ground for one unit of measure on the map or photo

for the facility. These data are provided in accordance with Environmental Data 

Standards Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, 

January 6, 2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2

Facility Site Horizontal 

Accuracy Measure

The measure of the accuracy (in meters) of the facility’s latitude and longitude 

coordinates. These data are provided in accordance with Environmental Data Standards 

Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, January 6, 

2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2

Facility Site Horizontal 

Collection Method

Description of the method used to determine the latitude and longitude coordinates for 

the facility. These data are provided in accordance with Environmental Data Standards 

Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, January 6, 

2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2

Facility Site Horizontal 

Reference Datum

The code/description for the reference datum used in determining latitude and longitude 

coordinates for the facility. These data are provided in accordance with Environmental 

Data Standards Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, 

January 6, 2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Facility Site Reference 

Point

The code/description for the place for which geographic coordinates were established.

These data are provided in accordance with Environmental Data Standards Council, 

Latitude/Longitude Data Standard, Standard No.: EX000017.2, January 6, 2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2

Facility Individual 

Affiliation Type Code

The way that the contact or address is affiliated with the facility (e.g., "Owner," 

“Operator,” or "Main Contact"). This is a unique code that identifies the nature of the 

individual's affiliation to the facility. 

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i),

1,2, 4, and 

7

Facility Individual First 

Name

The given name of an individual affiliated with this facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Individual Last 

Name

The surname of an individual affiliated with this facility.

122.21, 122.28(b)(2)(ii),

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Individual Title The title held by an individual in an organization affiliated with this facility.

122.21, 122.28(b)(2)(ii),

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Individual 

Organization

The legal, formal name of an organization that is affiliated with the individual affiliated 

with this facility.

122.21, 122.28(b)(2)(ii),

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Individual Street 

Address The physical address of the individual affiliated with this facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Individual City The name of the city, town, village, or other locality for the individual affiliated with 

this facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Facility Individual State The U.S. Postal Service (USPS) abbreviation that represents the state or state equivalent 

for the U.S. for the individual affiliated with this facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Individual Zip 

Code

The combination of the 5-digit Zone Improvement Plan (ZIP) code and the 4-digit 

extension code (if available) that represents the geographic segment that is a sub unit of 

the ZIP Code assigned by the U.S. Postal Service to a geographic location for the 

individual affiliated with this facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Individual E-Mail 

Address The e-mail address of the designated individual affiliated with this facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Organization 

Formal Name The legal, formal name of an organization that is affiliated with the facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Organization

Street Address The physical address of the organization affiliated with the facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Organization City The name of the city of the organization that is affiliated with the facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Facility Organization 

State

The U.S. Postal Service abbreviation that represents the state or state equivalent for the 

organization affiliated with the facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Facility Organization Zip 

Code

The combination of the 5-digit Zone Improvement Plan (ZIP) code and the 4-digit 

extension code (if available) that represents the geographic segment that is a sub unit of 

the ZIP Code assigned by the U.S. Postal Service to a geographic location for the 

organization affiliated with the facility.

122.21, 122.28(b)(2)(ii), 

403.8(f), 403.10, 

403.12(i)

1,2, 4, and 

7

Basic Permit Information

(Note: As indicated in the “CWA, Regulatory, or Other Citation” column, some of these data elements apply to Significant Industrial Users (SIUs) and 

Categorical Industrial Users (CIUs) when EPA or the State is the Control Authority).

NPDES ID This is the unique number for the NPDES permit or control mechanism for NPDES

regulated entities or Unpermitted ID for an unpermitted facility.

403.10 1,2

Master General Permit 

Number

The unique identifier of the master general permit, which is linked to a General Permit 

Covered Facility. This data element applies to facilities regulated by a master general 

permit. 

403.10 1,2

Permit Type The unique code/description identifying the type of permit. 122.2, 403.10 1,2

Permit Component

This will identify one or more applicable NPDES subprograms (e.g., pretreatment, 

CAFO, CSO, POTW, biosolids, stormwater) for the permit record. This field is only 

required when the permit includes one or more NPDES subprograms.

122.2, 403.10 1,2

Permit Issue Date This is the date the permit was issued. The date must be provided in 

YYYY-MM-DD format where YYYY is the year, MM is the month, and DD is the day.

122.46, 403.10 1

Permit Effective Date This is the date on which the permit is effective. The date must be provided in 

YYYY-MM-DD format where YYYY is the year, MM is the month, and DD is the day.

122.46, 403.10 1 

Permit 

Modification/Amendment 

Date

This is the date on which the permit was modified or amended. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

122.62, 122.63, 403.10 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Permit Expiration Date This is the date the permit will expire. The date must be provided in 

YYYY-MM-DD format where YYYY is the year, MM is the month, and DD is the day.

122.46, 403.10 1

Permit Termination Date

This is the date the permit was terminated. The date must be provided in 

YYYY-MM-DD format where YYYY is the year, MM is the month, and DD is the day.

This data element can be system generated when the permittee does not file a permit 

renewal application. 

122.64, 403.10 1

Permit Major/Minor 

Status Indicator

The flag to indicate if the permit is a major or non-major (“minor”). This data element 

is initially system generated (defaults to “Minor”) and updatable only by EPA OECA 

Headquarters.

122.2 1

Permit Major/Minor 

Status Start Date

The date that the Permit became its current Major/Minor status. Initially systemgenerated to match effective date and updatable only by EPA OECA Headquarters. The 

date must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day.

122.2 1

Permit Application Total 

Design Flow

This is the total flow that a permitted facility was designed to accommodate, in millions 

of gallons per day (MGD), as stated on its NPDES application. This data element does 

not apply to regulated entities that do not discharge (e.g., some biosolids generators) 

and entities that only discharge stormwater.

122.21, 122.28(b)(2)(ii), 

403.10(f), 1,2

Permit Application Total 

Actual Average Flow

This is the average total flow that a permitted facility will actually discharge at the start 

of its permit term, in MGD, as stated on its NPDES application. This data element does 

not apply to regulated entities that do not discharge (e.g., some biosolids generators) 

and entities that only discharge stormwater.

122.21,122.28(b)(2)(ii), 

122.41, 403.10(f) 1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Complete Permit 

Application/NOI 

Received Date

This is the date on which the complete application for a NPDES permit was received or 

a complete Notice of Intent (NOI) for coverage under a master general permit was 

received. The date must be provided in YYYY-MM-DD format where YYYY is the 

year, MM is the month, and DD is the day. This data element can be system generated 

when the complete NPDES permit application or complete NOI is electronically 

received by the NPDES program.

122.21, 122.28(b)(2)(ii),

403.10(f) 1

Permit Application/NOI 

Received Date

This is the date on which the application for a NPDES permit was received or a Notice 

of Intent (NOI) for coverage under a master general permit was received. The date must 

be provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day. This data element can be system generated when the NPDES permit 

application or NOI is electronically received by the NPDES program. 

122.21, 122.28(b)(2)(ii), 

403.10(f) 1

Permit Status This is a code/description that indicates whether the permit is Effective, Expired, 

Administratively Continued, Pending, Not Needed, Retired, or Terminated. 

122.64, 122.46, 

403.10(f) 1

Master General Permit 

Industrial Category

This code/description identifies the industrial category covered by the master general 

permit. This field is system-required for master general permits only.

122.28(b)(2)(ii), 

403.10(f) 1

Permit Issuing 

Organization Type This is the type of organization issuing or granting a permit. 123.41, 403.10(f) 1

DMR Non-Receipt

Turns non-receipt tracking for discharge monitoring reports (DMRs) “on” or “off” for 

non-major permits (a.k.a. “minors”). This field is always “on” for major permits. This 

field is initially set to “on.” This data element is system generated and can be modified 

by EPA Headquarters.

123.45 1

Reportable 

Noncompliance Tracking

Turns reportable noncompliance (RNC) tracking “on” or “off” for non-major permits 

(a.k.a. “minors”). This field is always “on” for major permits. This field is initially set 

to “on.” This data element is system generated and can be modified by EPA 

Headquarters.

123.45 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Applicable Effluent 

Limitations Guidelines

The applicable effluent limitations guidelines and new source performance standards 

for the NPDES permit (e.g., Part 414 - Organic chemicals, plastics, and synthetic fibers

point source category).

122.44, 403.10(f) 1

Permit Compliance 

Tracking Status

This is a code/description that indicates whether the permit is currently “on” or “off” for 

compliance tracking purposes. Initially system-generated to match effective date. 123.45, 403.10(f) 1

Permit Compliance 

Tracking Status Start Date

This is the date on which the permit’s “on” or “off” period for compliance tracking 

status began. Initially system-generated to match effective date. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

123.45, 403.10(f) 1

RNC Status Quarter The quarter of the permit reportable noncompliance (RNC) status. 123.45, 403.10(f) 1

RNC Status Year The year of the permit reportable noncompliance (RNC) status. 123.45, 403.10(f) 1

RNC Status (Manual)

The status of reportable noncompliance (RNC) as it was entered by the regulatory 

authority before the official Quarterly Noncompliance Report (QNCR) or NPDES 

Noncompliance Report (NNCR) for the RNC quarter for the permit.

123.45, 403.10(f) 1

Associated NPDES ID 

Numbers

If applicable, the unique identifier for a NPDES Permit that is related to another 

NPDES Permit or other NPDES ID number. For example, this data element could be 

used to identify the receiving POTW’s permit number for an industrial user, the 

recipient POTW’s permit number for a satellite collection system, and NPDES IDs for 

other permitted operators at the same construction site or industrial facility. This data 

element does not apply to municipal storm sewer systems (MS4s).

403.10(f) 1 through 5, 

7, 8, 9

SIC Codes The four-digit Standard Industrial Classification (SIC) code/description that represents 

the economic activity of the facility.

122.21, 122.28(b)(2)(ii), 

403.10(f) 1,2, and 7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

SIC Code Primary 

Indicator

This data element will identify the primary economic activity, SIC code, of the facility. 

This data element is required for electronic data transfer between state and EPA 

systems.

122.21, 122.28(b)(2)(ii), 

403.10(f) 1,2, and 7

NAICS Codes The six-digit North American Industry Classification System (NAICS) code/description

that represents the economic activity of the facility.

EPA SIC/NAICS Data 

Standard, Satndard No. 

EX000022.2, 6 January 

2006, Office of 

Management and

Budget, Executive 

Office of the President, 

Final Decision on North 

American Industry 

Classification System

(62 FR 17288), 

403.10(f) 403.10(f), 

1,2, and 7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

NAICS Code Primary 

Indicator

This data element will identify the primary economic activity, NAICS code, of the 

facility. This data element is required for electronic data transfer between state and EPA 

systems.

EPA SIC/NAICS Data 

Standard, Satndard No. 

EX000022.2, 6 January 

2006, Office of 

Management and 

Budget, Executive 

Office of the President, 

Final Decision on North 

American Industry 

Classification System 

(62 FR 17288), 

403.10(f) 403.10(f), 

1,2, and 7

Permittee Street Address The mailing street address of the permit holder. 122.21, 122.28(b)(2)(ii),

403.10(f) 1,2

Permittee Organization 

Formal Name The legal, formal name of the organization that holds the permit. 122.21, 122.28(b)(2)(ii), 403.10(f) 1,2

Permittee City The name of the city, town, or village where the mail is delivered for the permit holder.

122.21, 122.28(b)(2)(ii), 

403.10(f) 1,2

Permittee State The U.S. Postal Service abbreviation that represents the state or state equivalent for the 

U.S. for the permit holder.

122.21, 122.28(b)(2)(ii), 

403.10(f) 1,2

Permittee Zip Code

The combination of the 5-digit Zone Improvement Plan (ZIP) code and the 4-digit 

extension code (if available) that represents the geographic segment that is a sub unit of 

the ZIP Code assigned by the U.S. Postal Service to a geographic location for the permit 

holder.

122.21, 122.28(b)(2)(ii),

403.10(f) 1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

NPDES Data Group 

Number

This is the unique code/ description that identifies the types of NPDES program data 

that are required to be reported by the facility. This corresponds to Table 1 in this 

Appendix {e.g., 3 = Discharge Monitoring Report [40 CFR 122.41(l)(4)]}.

122.21, 122.21(j)(6), 

122.21(q), 

122.28(b)(2)(ii), 

122.44(j), 403.8(f), 

403.10, 403.12(i), 

503.18, 503.28, 503.48 

1

Electronic Submission 

Type

This is the unique code/description for each NPDES program data submitted by the 

facility (“NPDES Data Group Number”) that describes how the data was electronically 

collected or processed. These unique codes/descriptions include: (1) NPDES regulated 

entity submits NPDES program data using an EPA electronic reporting system; (2) 

NPDES regulated entity submits NPDES program data using an authorized NPDES 

program electronic reporting system; (3) NPDES regulated entity has temporary waiver 

from electronic reporting and submits NPDES program data on paper to the authorized 

NPDES program who then electronically uses manual data entry to electronically 

process these data; (4) NPDES regulated entity has a permanent waiver from electronic 

reporting and submits NPDES program data on paper to the authorized NPDES 

program who then electronically uses manual data entry to electronically process these 

data; (5) NPDES regulated entity submits NPDES program data on paper in a form that 

allows the authorized NPDES program to use of automatic identification and data 

capture technology to electronically process these data; (6) NPDES regulated entity 

submits NPDES program data using another electronic reporting system (e.g., thirdparty). This data element could be system generated for NPDES program data 

electronically reported by NPDES regulated entities.

123.26, 123.41(a) and 

CWA 308 1

Narrative Conditions and Permit Schedules

(Note: As indicated in the “CWA, Regulatory, or Other Citation” column, some of these data elements apply to Significant Industrial Users (SIUs) and 

Categorical Industrial Users (CIUs) when EPA or the State is the Control Authority).
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Description The unique code/ description that identifies the type of narrative condition. 122.47, 403.10(f) 1

Narrative Condition 

Number This identifies a narrative condition and its elements uniquely for a permit. 122.47, 403.10(f) 1

Schedule Date

The date on which a schedule event is due to be completed and against which 

compliance will be measured. The date must be provided in YYYY-MM-DD format 

where YYYY is the year, MM is the month, and DD is the day.

122.47, 403.10(f) 1

Actual Date

The date on which the permittee achieved the schedule event. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

122.47, 403.10(f) 1

Report Received Date

The date on which the regulatory authority receives a report from the permittee 

indicating that a Schedule Event was completed (e.g., Start Construction) or the 

required report was enclosed. The date must be provided in YYYY-MM-DD format 

where YYYY is the year, MM is the month, and DD is the day.

122.47, 403.10(f) 1

Event

The code(s) or description(s) indicating the particular event(s) with which the permittee 

is scheduled to comply. This includes program reports including the Cooling Water 

Yearly Status Report, which all new facilities subject to 125 Subpart I or N must 

submit. 

122.47, 403.10(f) 1

Permitted Feature

(Note: These ‘Permitted Feature’ data elements are only required to be submitted for permits that require outfall monitoring for stationary point sources. 

Additionally, as indicated in the “CWA, Regulatory, or Other Citation” column, some of these data elements apply to Significant Industrial Users (SIUs) and 

Categorical Industrial Users (CIUs) when EPA or the State is the Control Authority).

Application Design Flow

(MGD)

The flow that a permitted feature was designed to accommodate, in MGD. This data 

element does not apply to regulated entities that do not discharge (e.g., some biosolids 

generators) and entities that only discharge stormwater.

122.21, 122.28(b)(2)(ii), 

403.10(f) 1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Application Actual 

Average Flow (MGD)

The average flow that a permitted feature will actually discharge or transmit, in MGD, 

at the start of its permit term, as stated on its NPDES application.. This data element 

does not apply to regulated entities that do not discharge (e.g., some biosolids 

generators) and entities that only discharge stormwater.

122.21, 122.28(b)(2)(ii), 

403.10(f) 1,2

Permitted Feature ID The identifier assigned for each location at which conditions are being applied. 122.21, 122.28(b)(2)(ii), 

403.10(f) 1,2

Type

The code/description indicating the type of permitted feature (e.g. External Outfall, 

Sum, Intake Structure).

122.21, 122.28(b)(2)(ii),

403.10(f) 1,2

Receiving Waterbody 

Name for Permitted 

Feature

The name of the waterbody that is or will likely receive the discharge from each 

permitted feature. 122.21, 122.28(b)(2)(ii) 1,2

Permitted Feature

Longitude

The measure of the angular distance on a meridian east or west of the prime meridian 

for the permitted feature. Entered in either Decimal Degrees or in Degrees Minutes 

Seconds; stored in decimal degrees (e.g., -77.029289) and in accordance with 

Environmental Data Standards Council, Latitude/Longitude Data Standard, Standard 

No.: EX000017.2, January 6, 2006.

122.21, 122.28(b)(2)(ii) 1,2

Permitted Feature

Latitude

The measure of the angular distance on a meridian north or south of the equator for the f

permitted feature. Entered in either Decimal Degrees or in Degrees Minutes Seconds; 

stored in decimal degrees (e.g., 38.893829) and in accordance with Environmental Data 

Standards Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, 

January 6, 2006.

122.21, 122.28(b)(2)(ii) 1,2

Permitted Feature Source 

Map Scale Number

The number that represents the proportional distance on the ground for one unit of 

measure on the map or photo for the permitted feature. These data are provided in 

accordance with Environmental Data Standards Council, Latitude/Longitude Data 

Standard, Standard No.: EX000017.2, January 6, 2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Permitted Feature

Horizontal Accuracy 

Measure

The measure of the accuracy (in meters) of the permitted feature’s latitude and 

longitude coordinates. These data are provided in accordance with Environmental Data 

Standards Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, 

January 6, 2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2

Permitted Feature

Horizontal Collection 

Method

The text that describes the method used to determine the latitude and longitude 

coordinates for the permitted feature. These data are provided in accordance with 

Environmental Data Standards Council, Latitude/Longitude Data Standard, Standard 

No.: EX000017.2, January 6, 2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2

Permitted Feature

Horizontal Reference 

Datum

The code/description that represents the reference datum used in determining latitude 

and longitude coordinates for the permitted feature. These data are provided in 

accordance with Environmental Data Standards Council, Latitude/Longitude Data 

Standard, Standard No.: EX000017.2, January 6, 2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2

Permitted Feature

Reference Point

The code/description for the place for which geographic coordinates were established.

These data are provided in accordance with Environmental Data Standards Council, 

Latitude/Longitude Data Standard, Standard No.: EX000017.2, January 6, 2006.

EPA National 

Geospatial Data Policy –

CIO Policy Transmittal 

05-002

1,2

POTW Wastewater 

Treatment Technology 

Level Description

This data element describes the level of wastewater treatment technology (e.g., primary

equivalent to secondary, secondary, advanced, other) at each outfall. This data element 

only applies to POTWs.

122.21(j)(3)(iii) and 

CWA 516 1,2

POTW Wastewater 

Treatment Technology 

Unit Operations

The code/description of the wastewater treatment technology unit operations (e.g, grit 

removal, flow equalization, complete mix activated sludge secondary treatment, 

biological nitrification) at each outfall. This data element is required for POTWs that 

discharge above 10 MGD and is optional below 10 MGD.

122.21(j)(2)(ii)(A) and 

CWA 516 1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Limit Set

(Note: These ‘Limit Set’ data elements are only required to be submitted for permits that require effluent limits and outfall monitoring for stationary point 

sources. Additionally, as indicated in the “CWA, Regulatory, or Other Citation” column, some of these data elements apply to Significant Industrial Users 

(SIUs) and Categorical Industrial Users (CIUs) when EPA or the State is the Control Authority).

Limit Set Designator The alphanumeric field that is used to designate a particular grouping of parameters 

within a limit set. 122.45, 403.10(f) 1

Type

The unique code/description identifying the type of limit set (i.e. Scheduled, 

Unscheduled). 122.45, 403.10(f) 1

Months 

Limit Set Applies The default months that the limit set applies. Defaults to all 12 months. 122.45, 403.10(f) 1

Initial Monitoring Date

The date on which monitoring starts for the first monitoring period for the limit set; this 

date will be blank for Unscheduled Limit Sets. The date must be provided in YYYYMM-DD format where YYYY is the year, MM is the month, and DD is the day.122.45, 403.10(f) 1

Initial DMR Due Date

The date that the first DMR for the limit set is due to the regulatory authority; this date 

will be blank for Unscheduled Limit Sets. The date must be provided in YYYY-MMDD format where YYYY is the year, MM is the month, and DD is the day.122.45, 403.10(f) 1

Number of Report Units

The number of months covered in each DMR monitoring period (e.g., monthly = 1, 

semi-annually = 6, quarterly = 3). For example, if the permittee was required to provide 

reports for each month, the number of report units would be one.

122.45, 403.10(f) 1

Number of Submission 

Units

The number of months between DMR submissions (e.g., monthly = 1, semi-annually = 

6, quarterly = 3); this data element will be blank for Unscheduled Limit Sets. For 

example, if the permittee was required to submit monthly reports every quarter, the 

number of report units would be one (=monthly) and the number of submission units 

would be three (=three months of information in each submission).

122.45, 403.10(f) 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Status The status of the Limit Set (i.e., Active or Inactive); Limit Sets will not have violations 

generated when a Limit Set is Inactive unless an Enforcement Action Limit is present. 122 Subpart C, 403.10(f) 1

Limit Set Status Start 

Date

The date that the Limit Set Status started. The date must be provided in YYYY-MMDD format where YYYY is the year, MM is the month, and DD is the day.

123.45, 403.10(f) 1

Limit

(Note: These ‘Limit’ data elements are only required to be submitted for permits that require effluent limits and outfall monitoring for stationary point sources. 

Additionally, as indicated in the “CWA, Regulatory, or Other Citation” column, some of these data elements apply to Significant Industrial Users (SIUs) and 

Categorical Industrial Users (CIUs) when EPA or the State is the Control Authority).

Monitoring Location The code/description of the monitoring location at which sampling should occur for a 

limit parameter. 122.45, 403.10(f) 1

Season Number Indicates the season of a limit and is used to enter different seasonal limits for the same 

parameter within a single limit start and end date. 122.45, 403.10(f) 1

Start Date

The date on which a limit starts being in effect for a particular parameter in a limit set.

The date must be provided in YYYY-MM-DD format where YYYY is the year, MM is 

the month, and DD is the day.

122.45, 403.10(f) 1

End Date

The date on which a limit stops being in effect for a particular parameter in a limit set.

The date must be provided in YYYY-MM-DD format where YYYY is the year, MM is 

the month, and DD is the day.

122.45, 403.10(f) 1

Change of Limit Status 

Indicator

The code/description that describes circumstances affecting limits, such as formal 

enforcement actions or permit modifications. 122 Subpart C, 403.10(f) 1

Stay Type

The unique identifier of the type of stay applied to a limit (e.g., X, Y, Z), which 

indicates whether the limits do not appear on the DMR at all, are treated as monitor 

only, or have a stay value in effect during the period of the stay.

122.45, 403.10(f) 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Stay Start Date The date on which a limit stay begins. The date must be provided in YYYY-MM-DD 

format where YYYY is the year, MM is the month, and DD is the day.

124.19, 403.10(f) 1

Stay End Date The date on which a limit stay is lifted. The date must be provided in YYYY-MM-DD 

format where YYYY is the year, MM is the month, and DD is the day.

124.19, 403.10(f) 1

Reason for Stay The text that represents the reason a stay was applied to a permit. 124.19, 403.10(f) 1

Stay Limit Value

The numeric limit value imposed during the period of the stay for the limit; if entered, 

during the stay period, the system will use this limit value for calculating compliance, 

rather than the actual limit value that was stayed.

124.19, 403.10(f) 1

Limit Type

The code that indicates whether a limit is an enforceable, or alert limit (e.g., action 

level, benchmark) that does not receive effluent violations. 122.45, 403.10(f) 1

Enforcement Action ID

The unique identifier for the Enforcement Action that imposed the Enforcement Action 

limit; this data element helps tie the limit record to the Final Order record in the 

database.

122.45, 403.10(f) 1

Final Order ID The unique identifier for the Final Order that imposed the Enforcement Action limit; 

this data element ties the limit record to the Final Order record in the database. 122.45, 403.10(f) 1

Modification Effective 

Date

The effective date of the permit modification that created this limit. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

122.62, 403.10(f) 1

Modification Type

The type of permit modification that created this limit (e.g. major, minor, permit 

authorized change). 122.62, 403.10(f) 1

Parameter The unique code/description identifying the parameter being limited and/or monitored. 122.41(j), 403.10(f) 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Months The months that the limit applies. Defaults to limit set months. 122.46, 403.10(f) 1

Value Type The indication of the limit value type (e.g., Quantity 1, Concentration 2). 122.45(f) , 403.10(f) 1

Quantity Units , 

Concentration Units

The code/description representing the unit(s) of measure applicable to quantity or 

concentration limits as entered by the user. 122.45(f) , 403.10(f) 1

Statistical Base Code The code/description representing the unit of measure applicable to the limit and DMR 

values entered by the user (e.g., 30-day average, daily maximum). 122.45(d), 403.10(f) 1

Optional Monitoring Flag The flag allowing users to indicate that monitoring is optional but not required (i.e., 

effluent violation generation will be suppressed for optional monitoring). 122.45, 403.10(f) 1

Qualifier The unique code identifying the limit value operator (e.g., <, =, >). 122.45, 403.10(f) 1

Value The actual limit value number from the Permit or Enforcement Action Final Order. 122.45, 403.10(f) 1

Biosolids Information on NPDES Permit Application or Notice of Intent

(Note: The ‘Biosolids Management Facility Type’ is also required for the Biosolids Annual Report).

Biosolids Management 

Facility Type

The unique code/description that identifies whether the facility was issued a permit as a 

biosolids generator, processor, or end user (e.g., land application site, surface disposal 

site, incinerator). For the Biosolids Annual Report this data element is also the unique 

code/description that identifies an off-site facility or location receives biosolids or 

sewage sludge from this facility.

122.21(q), 

122.28(b)(2)(ii), 503.18, 

503.28, 503.48

1,2, and 4
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Biosolids or Sewage 

Sludge Treatment 

Processes (Permit)

This data element identifies the biosolids or sewage sludge treatment process or 

processes at the facility. For example, this may indicate whether primary, secondary, 

and tertiary treatment is being used, and the type of the biosolids or sewage sludge 

treatment process or processes used, including drying processes.

122.21(q)(6), 

122.28(b)(2)(ii) 1.2

Biosolids or Sewage 

Sludge Management 

Practice (Permit)

This data element will identify the type of biosolids or sewage sludge management 

practice or practices (e.g., land application, surface disposal, incineration) for each 

different form of biosolids and sewage sludge generated by the facility.

122.21(q)(6), 

122.28(b)(2)(ii) 1.2

Biosolids or Sewage 

Sludge Form (Permit)

This data element describes the nature of each biosolids and sewage sludge material 

generated by the facility in terms of whether the material is a biosolid or sewage sludge 

and whether the material is ultimately conveyed off-site in bulk or in bags. The facility 

will separately report the form for each biosolids or sewage sludge management 

practice used by the facility.

122.21(q)(6), 

122.28(b)(2)(ii) 1.2

Biosolids or Sewage 

Sludge Pathogen Class

(Permit)

This data element will identify the pathogen class or classes (e.g., Class A, Class B) of 

biosolids or sewage sludge generated by the facility. The facility will separately report 

the pathogen class for each biosolids or sewage sludge management practice used by

the facility and for each biosolids or sewage sludge form. 

122.21(q)(6), 

122.28(b)(2)(ii) 1.2

Biosolids or Sewage 

Sludge Vector Attraction 

Reduction Options

(Permit)

This data element will identify the land application and surface disposal vector 

attraction reduction options used by the facility. The facility will separately report the 

vector attraction reduction options for each biosolids or sewage sludge management 

practice used by the facility and for each biosolids or sewage sludge form as well as by

each biosolids or sewage sludge pathogen class. 

122.21(q)(6), 

122.28(b)(2)(ii) 1.2

Biosolids or Sewage 

Sludge Land Application 

Option (Permit)

This data element will identify the land application option or options used by the 

facility (e.g., EQ, PC, CPLR, APLR). The facility will separately report the land 

application option for each biosolids or sewage sludge management practice used by the 

facility and for each biosolids or sewage sludge form as well as by each biosolids or 

sewage sludge pathogen class and each vector attraction reduction option.

122.21(q)(6), 

122.28(b)(2)(ii) 1.2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Biosolids or Sewage 

Sludge Amount (Permit) 

The amount of biosolids (in dry metric tons) produced by the permitted facility in the 

preceding 365-day period for each different type of biosolids and sewage sludge 

generated by the facility. This identification will be made for each biosolids or sewage 

sludge management practice or practices used by the facility, each biosolids or sewage 

sludge form, each pathogen class, each vector attraction reduction option, and each land 

application option.

122.21 (q), 

122.28(b)(2)(ii) 1,2

Animal Feeding Operation Information on NPDES Permit Application or Notice of Intent

Facility CAAP Flag A binary “yes/no” flag to indicate whether the facility includes Concentrated Aquatic 

Animal Production (CAAP).

122.21(i)(2), 122.24, 

122.25, 122.28(b)(2)(ii) 1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Facility CAFO Flag The unique code/description that identifies whether the facility includes a small, 

medium or large Concentrated Animal Feeding Operation (CAFO).

122.21(i)(1), 122,23, 

122.28(b)(2)(ii) 1,2

CAFO Designation Date

The date on which the facility is designated as a Concentrated Animal Feeding 

Operation (CAFO). The date must be provided in YYYY-MM-DD format where 

YYYY is the year, MM is the month, and DD is the day.

122.23 1

CAFO Designation 

Reason

The reason(s) the State Director or the Regional Administrator used to designate an 

animal feeding operation as a small or medium CAFO. [Ed note: Large and medium 

CAFO definitions are in 40 CFR 122.23(b)]. This text field can include the following 

factors: (1) the size of the AFO and the amount of wastes reaching waters of the United 

States; (2) the location of the AFO relative to waters of the United States; (3) the means 

of conveyance of animal wastes and process waste waters into waters of the United 

States; (4) the slope, vegetation, rainfall, and other factors affecting the likelihood or 

frequency of discharge of animal wastes manure and process waste waters into waters 

of the United States; and (5) other relevant factors..

122.23(c) 1

CAFO Animal Types

The unique code/description that identifies the animal type(s) at the facility (e.g., beef 

cattle, broilers, layers, swine weighing 55 pounds or more, swine weighing less than 55 

pounds, mature dairy cows, dairy heifers, veal calves, sheep and lambs, horses, ducks, 

turkeys, other).

122.21(i)(1)(v), 

122.28(b)(2)(ii) 1,2

CAFO Animal Maximum 

Numbers

The maximum number of each type of animal in open confinement or housed under 

roof (either partially or totally) which are held at the facility for a total of 45 days or 

more in a 12 month period.\.

122.21(i)(1)(v), 

122.28(b)(2)(ii) 1,2

CAFO Animal Maximum 

Numbers in Open

Confinement

The maximum number of each type of animal in open confinement which are held at 

the facility for a total of 45 days or more in a 12 month period.

122.21(i)(1)(v), 

122.28(b)(2)(ii) 1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

CAFO MLPW The unique code/description that identifies the type of CAFO material generated by the 

facility (i.e., manure, litter, and process wastewater or ‘MLPW’) in a 12 month period.

122.21(i)(1)(viii), 

122.28(b)(2)(ii) 1,2

CAFO MLPW Amounts

The maximum amount of CAFO material generated by the facility (i.e., manure, litter, 

and process wastewater) in a 12 month period.

122.21(i)(1)(viii), 

122.28(b)(2)(ii) 1,2

CAFO MLPW Amounts

Units

The unit (e.g., tons, gallons) for the maximum amount of CAFO material generated by

the facility (i.e., manure, litter, and process wastewater) in a 12 month period.

122.21(i)(1)(viii), 

122.28(b)(2)(ii) 1,2

CAFO MLPW 

Transferred

The maximum amount of CAFO material generated by the facility (i.e., manure, litter, 

and process wastewater) in a 12 month period that is transferred to other persons. The 

units for this data element will be the same as the units for the “CAFO MLPW 

Amounts” data element.

122.21(i)(1)(ix), 

122.28(b)(2)(ii) 1,2

Total Number of Acres 

Available for Land 

Application

Total number of acres under the control of the applicant that are available for land 

application of CAFO material (i.e., manure, litter, and process wastewater).

122.21(i)(1)(vii), 

122.28(b)(2)(ii) 1,2

CAFO MLPW

Containment and Storage 

Type Code

The type(s) of CAFO material containment and storage (e.g., anaerobic lagoon, roofed 

storage shed, storage ponds, underfloor pits, above ground storage tanks, below ground 

storage tanks, concrete pad, impervious soil pad, other) at the facility..

122.21(i)(1)(vi), 

122.28(b)(2)(ii) 1,2

CAFO MLPW 

Containment and Storage 

Maximum Capacity

Amounts

The maximum storage or containment value for each CAFO material containment and

storage type at the facility.

122.21(i)(1)(vi), 

122.28(b)(2)(ii) 1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

CAFO MLPW 

Containment and Storage 

Maximum Capacity 

Amounts Unit

The unit for the maximum storage or containment value for each CAFO material 

containment and storage type at the facility (e.g., gallons).

122.21(i)(1)(vi), 

122.28(b)(2)(ii) 1,2

Construction and Industrial Stormwater Information (from the permitting authority derived from the NPDES Permit Application, Notice of Intent, or 

No Exposure Certification, or Low Erosivity Waiver)

Permit Required by 

Residual Designation

The permit writer may designate additional stormwater discharges as requiring

NPDES permits when the stormwater discharge, or category of stormwater discharges 

within a geographic area, contributes to a violation of a water quality standard or is a 

significant contributor of pollutants to waters of the United States. This data element 

identifies whether the permit writer is using this authority, commonly referred to as the 

“Residual Designation” authority, to regulate stormwater discharges through a NPDES 

permit.

CWA 402(p)(2)(E) and 

(6) and 122.26 

(a)(9)(i)(D)

1

Residual Designation 

Determination Date

The date when the permit writer made the designation that the stormwater discharges, 

or category of discharges within a geographic area, contributes to a violation of a water 

quality standard or is a significant contributor of pollutants to waters of the United 

States. The date must be provided in YYYY-MM-DD format where YYYY is the year, 

MM is the month, and DD is the day.

CWA Section 

402(p)(2)(E) and (6) and

122.26 (a)(9)(i)(D)

1

No Exposure Certification 

Approval Date

This is the date on which the No Exposure Certification (NEC) was authorized by the 

NPDES permitting authority. Submission of a No Exposure Certification means that the 

facility does not require NPDES permit authorization for its stormwater discharges due 

to the existence of a condition of “no exposure.” A condition of no exposure exists at an 

industrial facility when all industrial materials and activities are protected by a storm 

resistant shelter to prevent exposure to rain, snow, snowmelt, and/or runoff. This date 

would be provided by the permitting authority. The date must be provided in YYYYMM-DD format where YYYY is the year, MM is the month, and DD is the day.

122.26(g) 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Low Erosivity Waiver 

Approval Date

The NPDES Stormwater Phase II Rule allows NPDES permitting authorities to accept 

“low erosivity waivers” (LEWs) for small construction sites. The waiver process 

exempts small construction sites (disturbing under five acres) from NPDES permitting 

requirements when the rainfall erosivity factor is less than five during the period of 

construction activity. This is the date when the permitting authority granted such 

waiver, based on information from the entity requesting the waiver; this date would be 

provided by the permitting authority. The date must be provided in YYYY-MM-DD 

format, where YYYY is the year, MM is the month, and DD is the day.

122.26(b)(15) 1

Construction Stormwater Information on NPDES Permit Application, Notice of Intent, or Waiver Request [including stormwater large construction 

activity requiring permit coverage under 122.26(b)(14)(x)]

Total Area of the Site This is the total area (to the nearest quarter acre) of the construction site. This data field 

is only required for individual construction stormwater permit applications. 

122.26(c)(1)(ii)(B), 

122.28(b)(2)(ii) 1

Total Activity Area 

(Construction)

Total area (to the nearest quarter acre) of the construction activities. Areas of 

construction activity include areas of clearing, grading, and/or excavation and areas of 

construction support activity (e.g., concrete or asphalt batch plants, equipment staging 

yards, material storage areas, excavated materials disposal areas, borrow areas).

122.26, 122.28(b)(2)(ii) 1,2

Post-Construction Total 

Impervious Area

Total impervious area (to the nearest quarter acre) of the site after the construction 

addressed in the permit application is completed. This data field is only required for 

individual construction stormwater permit applications.

122.26(c)(1)(ii)(E) 1

Proposed Stormwater Best 

Management Practices for 

Construction Activities

This is a code/description that describes the proposed measures, including best 

management practices, to control pollutants in stormwater discharges from construction

activities. This includes a brief description of applicable state and local erosion and 

sediment control requirements.

122.26(c)(1)(ii)(C), 

122.28(b)(2)(ii) 1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Post-Construction 

Stormwater Best 

Management Practices for 

Construction Activities

This is a code/description that describes the proposed measures to control pollutants in 

stormwater discharges that will occur after construction operations have been 

completed, including a brief description of applicable state or local erosion and 

sediment control requirements. This data field is only required for individual 

construction stormwater permit applications.

122.26(c)(1)(ii)(D) 1

Soil and Fill Material 

Description

This is a code/description that field describes the nature of fill material and existing data 

describing soils or the quality of the discharge. This data field is only required for 

individual construction stormwater permit applications.

122.26(c)(1)(ii)(E) 1

Runoff Coefficient of the 

Site

This is an estimate of the runoff coefficient of the site after the construction addressed 

in the permit application is completed. This data field is only required for individual 

construction stormwater permit applications.

122.26(c)(1)(ii)(E) 1

Estimated Construction 

Project Start Date

The estimated start date for the construction project covered by the NPDES permit. The 

date must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day.

122.26, 122.28(b)(2)(ii) 1,2

Estimated Construction 

Project End Date

The estimated end date for the construction project covered by the NPDES permit. The 

date must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day.

122.26, 122.28(b)(2)(ii) 1,2

Industrial Stormwater Information on NPDES Permit Application, Notice of Intent, or Permitting Exclusion Request (excluding large construction 

activity requiring permit coverage under 122.26(b)(14)(x))
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Total Activity Area

(Industrial)

Total area (to the nearest quarter acre) of the facility that contains industrial activities 

and processes. These activities and processes may include (but are not limited to) using, 

storing or cleaning industrial machinery or equipment, and areas where residuals from 

using, storing or cleaning industrial machinery or equipment remain and are exposed to 

stormwater; materials or products stored outdoors; materials contained in open, 

deteriorated or leaking storage drums, barrels, tanks, and similar containers; and 

materials or products from past industrial activity. 

122.26, 122.28(b)(2)(ii) 1,2

Current Total Impervious 

Area

The current total impervious area (to the nearest quarter acre) of the facility. This data 

field is only required for individual industrial stormwater permit applications. 122.26(c)(1)(i)(B), 1

Proposed Stormwater Best 

Management Practices for 

Industrial Activities

This is a field that describes the structural and non-structural control measures 

(including treatment)to control pollutants in stormwater discharges from industrial 

activities.

122.26(c)(1)(i)(B),

122.28(b)(2)(ii) 1,2

dateMM is the month, and 

dateMM is the month, and 

Municipal Separate Storm Sewer System (MS4) Information on NPDES Permit Application or Notice of Intent
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

MS4 Permit Class The unique code/description that identifies the size of the MS4 permit holder: Phase I –

large or medium MS4s and Phase II – small MS4s.

122.26, 122.28(b)(2)(ii) 1,2

Unique Number for Each 

Municipality Covered 

Under MS4 Permit

The unique number for each municipality covered under MS4 permit. Use of this 

number will allow greater geographic resolution for the MS4 components being tracked 

and ensure consistency from year to year. The number would essentially be similar to 

an outfall number, for distinguishing compliance at various locations.

122.28(b)(2)(ii) and 

CWA 301(d), 304(b) 1,2, 6

MS4 Public Education 

Program

The unique code/description that identifies the educational materials the permittee 

intends to distribute or equivalent outreach activities ther permittee will implement to 

inform the community about the impacts of stormwater discharges and the steps the 

public can take to reduce stormwater pollutants.

122.21(f), 

122.26(d)(2)(iv)(B), 

(D)(4) and (A)(6);

122.28(b)(2)(ii),

122.34(b)(1),

122.34(d)(1)(i)

1,2

MS4 Measurable Goals 

Associated With Public 

Education Program

The unique code/description that identifies measurable goals associated with the public 

education programs including, as appropriate, the months and years in which the 

permittee will undertake required actions, including interim milestones and the 

frequency of the action. This data field only applies to Phase II MS4s.

122.34(d)(1)(ii),

122.28(b)(2)(ii) 2

MS4 Public Involvement

and Participation Program

The unique code/description that identifies how the permittee intends to involve the 

public and at minimum comply with State, Tribal, and local public notice requirements 

to implement its public involvement and participation program.

122.21(f), 

122.26(d)(2)(iv),

122.28(b)(2)(ii),

122.34(b)(2),

122.34(d)(1)(i)

1,2

MS4 Measurable Goals 

for the Public 

Involvement and 

Participation Program

The unique code/description that identifies the measurable goals associated with the 

public involvement and participation program including, as appropriate, the months and 

years in which the permittee will undertake required actions, including interim 

milestones and the frequency of the action. This data field only applies to Phase II 

MS4s.

122.28(b)(2)(ii)

122.34(d)(1)(ii) 2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

MS4 Illicit Discharge 

Detection and 

Elimination: MS4 System 

Map

The unique code/description that identifies whether the permittee has developed a storm 

sewer system map showing the location of all outfalls and names and locations of all 

waters of the U.S. that receive discharges from those outfalls.

122.21(f),

122.26(d)(1)(iii)(B), 

122.28(b)(2)(ii),

122.34(b)(3)(ii)(A),

122.34(d)(1)(i), 

1,2

MS4 Illicit Discharge 

Detection and 

Elimination: Ordinance or 

Other Regulatory 

Mechanism

The unique code/description that identifies whether the permittee has enacted an 

ordinance or other regulatory mechanism to prohibit non-stormwater discharges into its 

MS4 to the extent allowable by state, local or tribal law.

122.21(f),

122.26(d)(2)(i)(B) and 

(C), 

122.26(d)(2)(iv)(B)(1), 

122.28(b)(2)(ii),

122.34(b)(3)(ii)(B), 

122.34(d)(1)(i); 

1,2

MS4 Illicit Discharge 

Detection and 

Elimination: Enforcement

The unique code/description that identifies the procedures and actions the permittee will 

take to enforce the prohibition on non-stormwater discharges to the MS4.

122.21(f), 

122.26(d)(2)(iv)(B)(1),

122.28(b)(2)(ii),

122.34(b)(3)(ii)(B), 

122.34(d)(1)(i)

1,2

MS4 Illicit Discharge 

Detection and Elimination

Program 

The unique code/description that identifies the procedures and actions the permittee will 

take to detect and address non-stormwater discharges, including illegal dumping, to 

permittee’s system.

122.21(f), 

122.26(d)(2)(iv)(B),

122.28(b)(2)(ii),

122.34(b)(3)(ii)(C),

122.34(d)(1)(i)

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

MS4 Illicit Discharge 

Detection and 

Elimination: Public 

Education

The unique code/description that identifies the procedures and actions the permittee will 

take to inform public employees, businesses and the general public of hazards 

associated with illegal discharges and improper disposal of waste.

122.21(f), 

122.26(d)(2)(iv)(B),

122.28(b)(2)(ii),

122.34(b)(3)(ii)(D),

122.34(d)(1)(i)

1,2

MS4 Measurable Goals 

Associated With Illicit 

Discharge Detection and 

Elimination Program

The unique code/description that identifies the measurable goals associated with the 

illicit discharge detection and elimination program, including, as appropriate, the 

months and years in which the permittee will undertake required actions, including 

interim milestones and the frequency of the action. This data field only applies to Phase 

II MS4s.

122.34(d)(1)(ii) 2

MS4 Construction Site 

Stormwater Runoff 

Control Ordinance or 

Other Regulatory 

Mechanism

The unique code/description that identifies the permittee’s ordinance to the extent 

allowable by state, local or tribal law or other regulatory mechanism, including 

sanctions to ensure compliance, to require erosion and sediment controls.

122.21(f), 

122.26(d)(2)(iv)(D),

122.28(b)(2)(ii),

122.34(b)(4)(ii)(A),

122.34(d)(1)(i)

1,2

MS4 Construction Site 

Stormwater Runoff 

Control Program: Erosion 

and Sediment Controls

The unique code/description that identifies the permittee’s requirements for 

construction site operators to implement appropriate erosion and sediment control 

BMPs.

122.21(f), 

122.26(d)(2)(iv)(D),

122.28(b)(2)(ii),

122.34(b)(4)(ii)(B),

122.34(d)(1)(i)

1,2

MS4 Construction Site

Stormwater Runoff 

Control Program: Waste

Control

The unique code/description that identifies the permittee’s requirements for 

construction site operators to control waste such as discarded building materials, 

concrete truck washout, chemicals, litter, and sanitary waste at the construction site that 

may cause adverse impacts to water quality.

122.21(f), 

122.26(d)(2)(iv)(D),

122.28(b)(2)(ii),

122.34(b)(4)(ii)(C),

122.34(d)(1)(i)

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

MS4 Construction Site 

Stormwater Runoff 

Control Program: Plan 

Review

The unique code/description that identifies the permittee’s procedures for site plan 

review which incorporate consideration of potential water quality impacts.

122.21(f), 

122.26(d)(2)(iv)(D),

122.28(b)(2)(ii),

122.34(b)(4)(ii)(D),

122.34(d)(1)(i)

1,2

MS4 Construction Site 

Stormwater Runoff 

Control Program: Public 

Information

The unique code/description that identifies the permittee’s procedures for receipt and 

consideration of information submitted by the public.

122.21(f), 

122.26(d)(2)(iv)(D),

122.28(b)(2)(ii),

122.34(b)(4)(ii)(E),

122.34(d)(1)(i)

1,2

MS4 Construction Site 

Stormwater Runoff 

Control Program: Site 

Inspections And 

Enforcement

The unique code/description that identifies the permittee’s procedures for site 

inspection and enforcement of control measures.

122.21(f), 

122.26(d)(2)(iv)(D)(3),

122.28(b)(2)(ii),

122.34(b)(4)(ii)(F),

122.34(d)(1)(i)

1,2

MS4 Measurable Goals 

Associated with the 

Construction Site 

Stormwater Runoff 

Control Program

The unique code/description that identifies the measurable goals associated with the

construction program, including, as appropriate, the months and years in which the 

permittee will undertake required actions, including interim milestones and the 

frequency of the action. This data field only applies to Phase II MS4s.

122.34(d)(1)(ii) 2

MS4 Post- Construction 

Stormwater Management 

In New Development And 

Redevelopment: BMPs

The unique code/description that identifies the combination of structural and/or nonstructural best management practices (BMPs) (including on which MS4s require 

retention on site of particular sized storms or runoff volumes), which the permittee is 

using to address stormwater runoff from new development and redevelopment projects 

that disturb greater than or equal to one acre.

122.21(f), 

122.26(d)(2)(iv)(A)(2),

122.28(b)(2)(ii),

122.34(b)(5)(ii)(A),

122.34(d)(1)(i)

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

MS4 Post-Construction 

Stormwater Management 

In New Development And 

Redevelopment: 

\Ordinance or Other 

Regulatory Mechanism 

The unique code/description that identifies the permittee’s ordinance to the extent 

allowable by state, local or tribal law or other regulatory mechanism to address postconstruction runoff from new development and redevelopment projects.

122.21(f), 

122.26(d)(2)(iv)(A)(2),

122.28(b)(2)(ii),

122.34(b)(5)(ii)(B),

122.34(d)(1)(i)

1,2

MS4 Post-Construction 

Stormwater Management 

In New Development And 

Redevelopment: LongTerm Maintenance Of 

BMPs

The unique code/description that identifies the permittee’s program to ensure adequate 

long-term operation and maintenance of BMPs used for controlling runoff from new 

development and development projects.

122.21(f), 

122.26(d)(2)(iv)(A)(2),

122.28(b)(2)(ii),

122.34(b)(5)(ii)(C),

122.34(d)(1)(i)

1,2

MS4 Measurable Goals 

Associated with the PostConstruction: Stormwater 

Management Program

The unique code/description that identifies the measurable goals associated with the 

post construction program, including, as appropriate, the months and years in which the 

permittee will undertake required actions, including interim milestones and the 

frequency of the action. This data field only applies to Phase II MS4s.

122.34(d)(1)(ii) 2

MS4 Pollution 

Prevention/ Good 

Housekeeping for 

Municipal Operations

Program

The unique code/description that identifies the permittee’s operation and maintenance 

program that includes a training component and has the ultimate goal of preventing or 

reducing pollutant runoff from municipal operations.

122.21(f), 

122.26(d)(2)(iv)(A)(2),

122.28(b)(2)(ii),

122.34(b)(6)(i),

122.34(d)(1)(i)

1,2

MS4 Additional Measures

The unique code/description that identifies the any other additional measures in the 

permittee’s stormwater management program that is required by the permit such as 

controls to be consistent with the assumptions and requirements of any available 

wasteload allocation prepared by a state and approved by EPA. 

122.28(b)(2)(ii),

122.34(b),

122.34(d)

122.44(d)(1)(vii)(B)

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

MS4 Measurable Goals

for Additional Measures

The unique code/description that identifies the measurable goal for any additional 

program measure. This data field only applies to Phase II MS4s.

122.28(b)(2)(ii),

122.34(e)

2

POTW Collection System Information on NPDES Permit Application or Notice of Intent

Name of Collection 

System

This is the unique name of each collection system that provides flow to the permittee. 

This includes unincorporated connector districts and satellite collection systems, which 

are sanitary sewers owned or operated by another entity that conveys sewage or 

industrial wastewater to this permittee. This data element applies to POTWs.

122.1(b) and 

122.21(j)(1)(iv), 

122.28(b)(2)(ii)

1,2

Owner Type of Collection 

System

The unique code/description that identifies the ownership type for each unique 

collection system that provides flow to the permittee (e.g., municipality owned, 

privately owned). This includes unincorporated connector districts and satellite 

collection systems. This data element applies to POTWs.

122.1(b) and 

122.21(j)(1)(iv), 

122.28(b)(2)(ii)

1,2

Permit Number for 

Collection System

This is the NPDES permit number (if any) for each unique collection system that 

provides flow to the permittee. This includes unincorporated connector districts and 

satellite collection systems. This data element applies to POTWs.

122.1(b) and 

122.21(j)(1)(iv), 

122.28(b)(2)(ii)

1,2

Population of Collection 

System

This is the population for each unique collection system that provides flow to the 

permittee. This includes unincorporated connector districts and satellite collection 

systems. This data element applies to POTWs.

122.1(b) and 

122.21(j)(1)(iv), 

122.28(b)(2)(ii)

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Percentage of Collection 

System That Is a 

Combined Sewer System

For each unique collection system that provides flow to the permittee, this is the 

percentage of the collection systemthat is a combined sewer system. This includes 

unincorporated connector districts and satellite collection systems. This percentage is 

calculated separately for each unique collection system that provides flow to the 

permittee and is based on the service population of each unique collection system. This 

data element applies to POTWs.

122.1(b) and 

122.21(j)(1)(iv) and 

(vii), 122.28(b)(2)(ii)

1,2

Combined Sewer System Information on NPDES Permit Application or Notice of Intent

Complete and Implement 

a Long-Term CSO 

Control Plan

All Phase II and post-Phase II combined sewer system NPDES permittees are required 

to complete and implement a long-term CSO control plan as described in EPA’s 

Combined Sewer Overflow (CSO) Control Policy (19 April 1994; 59 Federal Register 

18688-18698). This data element identifies whether the permit requires the permit 

holder to complete and implement a long-term CSO control plan and whether the permit 

holder is in compliance with this permit language.

CWA 402(q)(1) 1

Nine Minimum CSO 

Controls Developed

All combined sewer system NPDES permittees are required to implement the nine 

minimum controls outlined in EPA’s Combined Sewer Overflow (CSO) Control Policy 

(19 April 1994; 59 Federal Register 18688-18698). This data element identifies whether 

the permit holder developed the nine minimum controls in compliance with permit 

language.

CWA 402(q)(1) 1

Nine Minimum CSO 

Controls Implemented

All combined sewer system NPDES permittees are required to implement the nine 

minimum controls outlined in EPA’s Combined Sewer Overflow (CSO) Control Policy 

(19 April 1994; 59 Federal Register 18688-18698). This data element identifies whether 

the permit holder implemented the nine minimum controls in compliance with permit 

language.

CWA 402(q)(1) 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Enforcement Mechanism 

for the LTCP

All Phase II and post-Phase II combined sewer system NPDES permittees are required 

to complete and implement a long-term CSO control plan as described in EPA’s 

Combined Sewer Overflow (CSO) Control Policy (19 April 1994; 59 Federal Register 

18688-18698). This data element identifies the type of enforcement mechanism used to 

require the development and implementation of a LTCP. 

CWA 402(q)(1) 1

LTCP Submitted

All Phase II and post-Phase II combined sewer system NPDES permittees are required 

to complete and implement a long-term CSO control plan as described in EPA’s 

Combined Sewer Overflow (CSO) Control Policy (19 April 1994; 59 Federal Register 

18688-18698). This data element identifies whether the permit holder submitted the 

LTCP for approval by the permitting authority. 

CWA 402(q)(1) 1

LTCP Approved

All Phase II and post-Phase II combined sewer system NPDES permittees are required 

to complete and implement a long-term CSO control plan as described in EPA’s 

Combined Sewer Overflow (CSO) Control Policy (19 April 1994; 59 Federal Register 

18688-18698). This data element identifies whether the LTCP submitted by the permit 

holder was approved by the permitting authority. 

CWA 402(q)(1) 1

LTCP Approval Date

All Phase II and post-Phase II combined sewer system NPDES permittees are required 

to complete and implement a long-term CSO control plan as described in EPA’s 

Combined Sewer Overflow (CSO) Control Policy (19 April 1994; 59 Federal Register 

18688-18698). This data element identifies the date when the permitting authority 

approved the LTCP. The date must be provided in YYYY-MM-DD format where 

YYYY is the year, MM is the month, and DD is the day.

CWA 402(q)(1) 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Actual Date Completed 

LTCP and CSO Controls

All Phase II and post-Phase II combined sewer system NPDES permittees are required 

to complete and implement a long-term CSO control plan as described in EPA’s 

Combined Sewer Overflow (CSO) Control Policy (19 April 1994; 59 Federal Register 

18688-18698). This data element identifies the date by which the permit holder 

completed all required LTCP and CSO controls. The date must be provided in YYYYMM-DD format where YYYY is the year, MM is the month, and DD is the day.

CWA 402(q)(1) 1

Enforceable Schedule to 

Complete LTCP and CSO 

Controls

All Phase II and post-Phase II combined sewer system NPDES permittees are required 

to complete and implement a long-term CSO control plan as described in EPA’s 

Combined Sewer Overflow (CSO) Control Policy (19 April 1994; 59 Federal Register 

18688-18698). This data element identifies whether the permit holder is on an 

enforceable schedule to complete all required LTCP and CSO controls. 

CWA 402(q)(1) 1

Other CSO Control 

Measures with 

Compliance Schedule

This data element identifies whether the permit holder has other CSO control measures 

specified in a compliance schedule, beyond those identified in the nine minimum 

controls, LTCP, or a plan for sewer system separation.

CWA 402(q)(1) 1

Approved PostConstruction Compliance 

Monitoring Program

This data element indicates whether the permit holder is currently operating under an 

approved post-construction compliance monitoring program. CWA 402(q)(1) 1

Pretreatment Information on NPDES Permit Application or Notice of Intent (this includes permit application data required for all new and existing 

POTWs [40 CFR 122.21(j)(6)] [Note: These data will be added or updated through the Annual Pretreatment Program Report (403.12(i) as needed.]

Pretreatment Program 

Required Indicator

The code/description indicating if the permitted municipality is required to develop a 

pretreatment program.

122.28(b)(2)(ii), 

122.44(j) 1

Pretreatment Program 

Approval or Modification

Date

The date the pretreatment program was approved or modified. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

122.28(b)(2)(ii), 

403.8(a) and (b), 403.11 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Pretreatment Program 

Modification Type

The code/description of the type of modification to a POTW Pretreatment Program, 

which includes the initial start of a pretreatment program.

122.28(b)(2)(ii), 

403.8(a) and (b), 403.11 1

Approval Authority Name The name of the agency that is the designated approval authority. 122.28(b)(2)(ii), 

403.8(a) and (b), 403.11 1

dateMM is the month, and 

dateMM is the month, and 

Industrial User Type Flag

The unique code/description that identifies the type of industrial user discharging to a

POTW [e.g., Significant Industrial User (SIU), Standard Categorical Industrial Users 

(CIU), Non-Significant Categorical Industrial User (NSCIU), Middle Tier Categorical 

Industrial User (MTCIU), and Dental Industrial User (DIU)]. This data element is at the 

facility-level and is required for all SIUs, CIUs, NSCIUs, MTCIUs, and DIUs, [Note: 

These data will be added or updated through the Annual Pretreatment Program Report 

(403.12(i) as needed.]

122.21(j)(6), 

122.28(b)(2)(ii), 

122.44(j), 403.12(i)

1,2,7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Significant Industrial User 

Subject to Local Limits

This data element will identify for each Significant Industrial User (SIU) or Categorical

Industrial User (CIU) that is discharging (including truck transportation) to a POTW 

whether the SIU is subject to local limits. [Note: These data will be added or updated 

through the Annual Pretreatment Program Report (403.12(i) as needed.]

122.21(j)(6), 

122.28(b)(2)(ii), 

122.44(j), 403.12(i)

1,2,7

Significant Industrial User 

Subject to Local Limits 

More Stringent Than 

Categorical Standards 

This data element will identify for each Significant Industrial User (SIU) or Categorical 

Industrial User (CIU) that is discharging (including truck transportation) to a POTW 

whether the SIU is subject to local limits that are more stringent than the applicable 

categorical standards. This data element will track the percentage of effluent limits that 

are based on local limits as they are more stringent than categorical standards. [Note: 

These data will be added or updated through the Annual Pretreatment Program Report 

(403.12(i) as needed.]

122.21(j)(6), 

122.28(b)(2)(ii), 

122.44(j), 403.12(i)

1,2,7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Applicable Categorical 

Standards

This data element will identify for each Significant Industrial User (SIU) or Categorical 

Industrial User (CIU) that is discharging (including truck transportation) to a POTW the 

applicable categorical standard(s) by its 40 CFR part number (e.g., Metal Finishing –

Part 433, Electrical and Electronic Components – Part 469). [Note: These data will be 

added or updated through the Annual Pretreatment Program Report (403.12(i) as 

needed.]

122.21(j)(6), 

122.28(b)(2)(ii), 

122.44(j), 403.12(i)

1,2,7

Significant Industrial User 

Wastewater Flow Rate

This data element will identify for each Significant Industrial User (SIU) or Categorical 

Industrial User (CIU) that is discharging (including truck transportation) to a POTW the 

total wastewater flow rate (in gallons per day).

122.21(j)(6), 

122.28(b)(2)(ii), 

122.44(j)

1,2

Industrial User Causing 

Problems at POTW

This data element will identify for each Significant Industrial User (SIU) or Categorical 

Industrial User (CIU) whether it caused or contributed to any problems (including 

upset, bypass, interference, pass-through) at a POTW within the past four and one-half 

calendar years. EPA regulations require the Control Authority to develop and enforce 

local limits when the discharge from an IU causes or contributes to any problems 

(including upset, interference, bypass) at the receiving POTW’s effluent discharge or 

biosolids.

122.21(j)(6), 

122.28(b)(2)(ii), 

122.44(j)(2)(ii), 403.5(c)

1,2

Receiving RCRA Waste This data element will identify whether a POTW has received RCRA hazardous waste 

by truck, rail, or dedicated pipe within the last three calendar years. 

122.21(j)(7), 

122.28(b)(2)(ii), 

122.44(j)

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Receiving Remediation 

Waste

This data element will identify whether the POTW has received RCRA or CERLCA 

waste from off-site remedial activities within the last three years. 122.21(j)(7), 122.44(j) 1,2

Control Authority Name

The name of the Control Authority for the Significant Industrial User (SIU) or 

Categorical Industrial User (CIU) discharging to a POTW. This will be the name of the 

State or EPA Region when they are the Control Authority.

122.28(b)(2)(ii), 

122.44(j)

1,2

Control Authority NPDES 

Permit Number

The NPDES permit number of the Control Authority for the Significant Industrial User 

(SIU) or Categorical Industrial User (CIU) discharging to a POTW.

122.28(b)(2)(ii), 

122.44(j) 1,2

Cooling Water Intake Information on NPDES Permit Application or Notice of Intent

Cooling Water Intake 

Applicable Subpart

The unique code/description that identifies the regulatory subpart the facility is subject 

to (e.g., 1 = New Facility under 125 Subpart I, 2 = New Offshore Oil and Gas Facility 

under 40 CFR 125 Subpart N, 3 = Existing Facility under 40 CFR 125 Subpart J, 4 = 

BPJ Facility under 40 CFR 125.80(c), 40 CFR 125.90(b), 40 CFR 125.130(c), or 

401.14).

122.21(r), 

122.28(b)(2)(ii), 125 

Subpart I, J, and N, 

401.14 and CWA 316(b)

1,2

Number of Cooling Water 

Intake Structures (CWISs) This is the number of cooling water intake structures (CWISs) at the facility.

122.21(r), 

122.28(b)(2)(ii), 125.86, 

125.95, 125.136, 401.14

and CWA 316(b)

1,2

Design Intake Flow for 

Cooling Water Intake 

Structure(s)

This is the cumulative design intake flow (DIF), in units of MGD, for each cooling 

water intake structure at the facility. DIF is the value assigned (during facility’s design) 

to the total volume of water withdrawn from a source water body over a specific time 

period. This value is based on maximum design flow capacities.

122.21(r),

122.28(b)(2)(ii), 125.80, 

125.86, 125.90, 125.95,

125.131, 125.136, 

401.14 and CWA 316(b)

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Actual Intake Flow for 

Cooling Water Intake 

Structure(s)

This actual flow value, in units of MGD, is intended to represent on-the-ground intake 

flow capacities for each cooling water intake structure at the facility, as opposed to the 

DIF, which is based on maximum design flow capacities. For existing facility, Actual 

Intake Flow (AIF) means the average volume of water withdrawn on an annual basis by 

the cooling water intake structures over the past three years. After [INSERT DATE 5 

YEARS AFTER EFFECTIVE DATE OF THE SUBPART J FINAL RULE], AIF 

means the average volume of water withdrawn on an annual basis by the cooling water 

intake structures over the previous five years.

122.21(r), 

122.28(b)(2)(ii), 

125.86,125.95, 125.136, 

401.14 and CWA 316(b)

1,2

Location Type for 

Cooling Water Intake 

Structure

The unique code/description that identifies the location and description for each cooling 

water intake structure. These values are 1=shoreline intake description (flushed, 

recessed), 2= intake canal, 3=embayment, bank, or cove, 4=submerged offshore intake,

5=near-shore submerged intake, 6=shoreline submerged intake, 7=other.

122.21(r), 

122.28(b)(2)(ii), 125.86, 

125.95, 125.136, 401.14

and CWA 316(b)

1,2

Maximum ThroughScreen Design VelocityThis is the maximum velocity (in feet/second) of the water intake through the screen for 

each cooling water intake structure.

122.21(r), 122.28(b)(2), 

125.86, 125.95, 125.136, 

401.14 and CWA 316(b)

1,2

Actual Through-Screen 

Velocity

This is the actual through-screen velocity (in feet/second) of the water intake through 

the screen for each cooling water intake structure.

122.21(r), 122.28(b)(2), 

125.86, 125.95, 125.136, 

401.14 and CWA 316(b)

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Source Water for Cooling 

Purposes

The unique code/description that describes the source water for cooling purpose for 

each cooling water intake structure. A value of 1 = Ocean, 2 = Estuary, 3 = Great Lake, 

4 = Fresh River, 5 = Lake/Reservoir, 6 = contract or arrangement with an independent 

supplier (or multiple suppliers).

122.21(r), 

122.28(b)(2)(ii), 125.86, 

125.95, 125.136, 401.14

and CWA 316(b)

1,2

Cooling Water Intake 

Chosen Compliance 

Method

The unique code/description to indicate the compliance method selected for each 

cooling water intake structure based on EPA’s CWA 316(b) regulations or based on 

BPJ. For new facilities for example, Track I, Track II, alternative requirements, etc. For 

existing facilities, which of the 125.94(c) compliance options were chosen and reported 

as part of 122.21(r)(6).

122.21(r)(6),

122.28(b)(2)(ii), 125.84, 

125.85, 125.94, 125.134, 

125.135, 401.14 and 

CWA 316(b)

1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Cooling Water 

Information Submitted

A binary “yes/no” flag to indicate whether the facility has submitted the required 

information based on compliance method chosen.

125.86, 125.95, 125.136, 

401.14 and CWA 316(b) 1

MM is the month, and 

dateYYYYYYMM is the month, and 

dateYYYYYYMM is the month, and 

MM is the month, and 

MM is the month, and 

MM is the month, and 

Alternative Requirements 

Provision Request Date

The date of any request under the Alternative Requirements provision as defined under 

40 CFR 125.85, 40 CFR 125.94(e)(2) or 40 CFR 125.135. The date must be provided in 

YYYY-MM-DD format where YYYY is the year, MM is the month, and DD is the day.

122.28(b)(2), 125.85, 

125.94(e)(2), 125.135

and CWA 316(b)

1,2

Existing Facilities –

Request for Reduced 

Information in 

Application Submittal

The date of any request for reduced information requirements regarding cooling water 

intake structure and waterbody information. The request must be submitted to the 

Director at least two years and six months prior to the expiration of its current NPDES 

permit. The owner or operator’s request must identify each element that it determines 

has not substantially changed since the previous permit application and the basis for the 

determination. The Director has the discretion to accept or reject any part of the request.

The date data must be provided in YYYY-MM-DD format where YYYY is the year, 

MM is the month, and DD is the day.

122.28(b)(2), 125.95(a) 

and (c) and CWA 316(b) 1,2
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Source Water Baseline 

Biological 

Characterization Data: 

Species Name

For new and existing facilities, a listing of each species (or relevant taxa) for all life 

stages in the vicinity of the cooling water intake structure.

122.21(r)(4), 

122.28(b)(2), 125.86, 

125.95, 125.136, 401.14

and CWA 316(b)

1,2

Source Water Baseline 

Biological 

Characterization Data:

Species Number

For new and existing facilities, the number of each species (or relevant taxa) in the 

vicinity of the cooling water intake structure.

122.21(r)(4), 

122.28(b)(2), 125.86, 

125.95, 125.136, 401.14

and CWA 316(b)

1,2

Source Water Baseline 

Biological 

Characterization Data: 

Threatened or Endangered 

Flag

For new and existing facilities, a unique code/description that describes for each species 

(or relevant taxa) whether the species is threatened, endangered, or is an otherwise

protected species that might be susceptible to impingement and entrainment at the 

facility’s cooling water intake structures.

122.21(r)(4), 

122.28(b)(2), 125.86, 

125.95, 125.136, 401.14

and CWA 316(b)

1,2

CWA Section 316(a) Thermal Variance Information on NPDES Permit Application or Notice of Intent

Request for Thermal 

Variance

The unique code/description that describe the thermal variance request submitted by the 

permittee (e.g., 1 = new request, 2 = renewal request).

125 Subpart H and 

CWA 316(a) 1

Thermal Variance Study 

Date

This is the date when the permittee submitted studies/data to support its 316(a) 

demonstraton or support the continuation of the variance. The date must be provided in 

YYYY-MM-DD format where YYYY is the year, MM is the month, and DD is the day.

122.28(b)(2)(ii), 125 

Subpart H and CWA 

316(a)

1

Public Notice of Section 

316(a) Requests

This is the unique code/description that describes whether the permitting authority 

included the information required under 124.57(a) in the public notice regarding the 

CWA section 316(a) request.

124.57, 125 Subpart H

and CWA 316(a) 1

Thermal Variance 

Granted

This the unique code/description that describes whether the permitting authority has 

granted the permittee a CWA 316(a) variance for the controlling NPDES permit.

122.28(b)(2)(ii), 125 

Subpart H and CWA 

316(a)

1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Thermal Variance Date

This is the date when the permitting authority granted the permittee a CWA 316(a) 

variance for the controlling NPDES permit. The date must be provided in YYYY-MMDD format where YYYY is the year, MM is the month, and DD is the day.

122.28(b)(2)(ii), 125 

Subpart H and CWA 

316(a)

1

Thermal Variance Value This is the numeric value of the alternative effluent limitation(s) granted for each 

Permitted Feature.

122.28(b)(2)(ii), 125 

Subpart H and CWA 

316(a)

1

Non-Variance Thermal 

Standards and Limitations

This is the non-variance numeric value of the thermal effluent limitation(s) based on 

effluent limitations guidelines or water quality standards for each Permitted Feature.

122.28(b)(2)(ii), 125 

Subpart H and CWA 

316(a)

1

Thermal Variance Unit

This is the unit of measure (e.g., oF or oC of discharged effluent, oF or oC different 

between discharged effluent and receiving waterbody, oF or oC different between 

discharged effluent and inlet water source) associated with numeric value of the 

alternative effluent limitation granted (“Thermal Variance Value”) and thermal effluent 

limitation based on effluent guidelines or water quality standards (“Non-Waiver 

Thermal Standards and Limitations”).

122.28(b)(2)(ii)125 

Subpart H and CWA 

316(a)

1

Compliance Monitoring Activity

Compliance Monitoring 

ID The unique identifier for the compliance monitoring activity. 123.26, 123.41(a) and CWA 308 1

Permitted Feature 

Identifier

The unique identifier for the permitted feature number(s) entered by the user for the 

inspected permitted feature(s). This data element will provide a linkage to location data 

from the NPDES permit application. This data element can be left blank if the 

compliance monitoring activity does not involve a permitted feature.

123.26, 123.41(a) and 

CWA 308 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Compliance Monitoring 

Activity Actual End Date

The actual date on which the compliance monitoring activity ended. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

123.26, 123.41(a) and 

CWA 308 1

Compliance Monitoring 

Activity Planned End 

Date

The planned date for the compliance monitoring activity to end. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

123.26, 123.41(a) and 

CWA 308 1

Compliance Monitoring 

State

The US Postal Service abbreviation that represents that state or state equivalent for the 

U.S. in which the compliance monitoring activity occurred.

123.26, 123.41(a) and 

CWA 308 1

Compliance Activity 

The unique code/description that identifies a type of compliance event. For example, 

there are codes for inspection, investigation, information request, and offsite records 

review.

123.26, 123.41(a) and 

CWA 308 1

Compliance Monitoring 

Type

The code/description indicating the type of compliance monitoring activity taken by a

regulatory Agency. Each compliance monitoring activity has a variety of different 

types, such as audit, sampling, case development, follow-up, reconnaissance without 

sampling, etc.

123.26, 123.41(a) and 

CWA 308 1

Biomonitoring Inspection 

Method

The unique code that identifies the type of biomonitoring inspection method (e.g., 

discrete acute, discrete chronic, discrete method, flow-through method, flow-through 

acute, flow-through chronic). This data element supplements the Compliance 

Monitoring Category and Compliance Monitoring Type Inspection Type recorded for 

all inspections.

123.26, 123.41(a) and 

CWA 308 1

Compliance Monitoring 

Category

The unique code/description identifying the compliance monitoring or inspection 

category code/description.

123.26, 123.41(a) and 

CWA 308 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Compliance Monitoring 

Action Reason The unique code that identifies the purpose of an activity. 123.26, 123.41(a) and CWA 308 1

Was this a State, Federal 

or Joint (State/Federal) 

Inspection?

The flag indicating if the inspection is a joint inspection by federal, state, tribal, or 

territorial personnel.

123.26, 123.41(a) and 

CWA 308 1

Compliance Monitoring 

Agency Type 

An indicator whether the compliance monitoring activity was designated as an EPA or 

state activity/inspection.

123.26, 123.41(a) and 

CWA 308 1

Programs Evaluated The unique identifier for the programs evaluated in or pertinent to the activity. 123.26, 123.41(a) and 

CWA 308 1

Compliance Monitoring Activity (Biosolids Inspections)

Deficiencies Identified 

Through the Biosolids 

Inspection

This data element will identify each deficiency identified in that facility’s biosolids 

implementation for each biosolids inspection. These deficiencies will allow users to 

distinguish between noncompliance and significant noncompliance (SNC).

123.26, 123.41(a), 

123.45, and CWA 308 1

Compliance Monitoring Activity (AFO/CAFO Inspections)

Animal Types 

(Inspection)

The unique code/description that identifies the animal type(s) at the facility at the time 

of inspection (e.g., beef cattle, broilers, layers, swine weighing 55 pounds or more, 

swine weighing less than 55 pounds, mature dairy cows, dairy heifers, veal calves, 

sheep and lambs, horses, ducks, turkeys, other).

122.23, 123.26, 

123.41(a), and CWA 

308

1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Animal Numbers

(Inspection)

The number of each type of animal in open confinement or housed under roof (either 

partially or totally) which are held at the facility at the time of inspection..

122.23, 123.26, 

123.41(a) and CWA 308 1

Animal Numbers in Open 

Confinement (Inspection)

The number of each type of animal in open confinement which are held at the facility at 

the time of inspection.

122.23, 123.26, 

123.41(a) and CWA 308 1

MLPW Containment and 

Storage Type Code 

(Inspection) 

The type(s) of containment and storage (e.g., anaerobic lagoon, roofed storage shed, 

storage ponds, underfloor pits, above ground storage tanks, below ground storage tanks, 

concrete pad, impervious soil pad, other) at the facility at the time of inspection.

122.23, 123.26, 

123.41(a) and CWA 308 1

MLPW Containment and 

Storage Type Within 

Design Capacity 

(Inspection)

The unique code(s)/description(s) that identifies whether or not the facility is operating 

within the design capacity for each type of containment and storage used by the facility 

for MLPW at the time of inspection..

122.23, 123.26, 

123.41(a) and CWA 308 1

AFO/CAFO Unauthorized 

Discharges (Inspection)

A binary “yes/no” flag to indicate whether there evidence of unauthorized discharge(s) 

of pollutants from the facility’s production area and/or land application area(s).

122.23, 123.26, 

123.41(a) and CWA 308 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Permit Requirements 

Implemention (Inspection)

The unique code/description that identifies whether or not the facility is properly 

implementing its permit requirements, including the applicable Nutrient Management 

Plan (NMP) or other nutrient management planning, at the time of inspection.

122.23, 123.26, 

123.41(a) and CWA 308 1

Compliance Monitoring Activity (Sewer Overflows Inspections and Audits)
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Sewer Overflow

Longitude

This data element is required for sewer overflow inspections without a permitted feature 

identifier. The measure of the angular distance on a meridian east or west of the prime 

meridian for the sewer overflow. Entered in either decimal degrees or in degrees 

minutes seconds; stored in decimal degrees (e.g., -77.029289). This data element will 

enable users to compare this inspection to a sewer overflow incident report. These data 

are provided in accordance with Environmental Data Standards Council, 

Latitude/Longitude Data Standard, Standard No.: EX000017.2, January 6, 2006.

123.26, 123.41(a) 1

Sewer Overflow Latitude

This data element is required for sewer overflow inspections without a permitted feature 

identifier. The measure of the angular distance on a meridian north or south of the 

equator for the sewer overflow. Entered in either decimal degrees or in degrees minutes 

Seconds; stored in decimal degrees (e.g., 38.893829). This data element will enable 

users to compare this inspection to a sewer overflow incident report. These data are 

provided in accordance with Environmental Data Standards Council, 

Latitude/Longitude Data Standard, Standard No.: EX000017.2, January 6, 2006.

123.26, 123.41(a) 1

Type of Sewer Overflow A code identifying the type of sewer overflow (including CSO, SSO, Bypass, Other 

Discharge from the Collection System or Treatment Works). 123.26, 123.41(a) 1

Sewer Overflow Cause The likely cause of the overflow event (e.g., broken pipe, fats/oil/grease, mechanical 

failure, pump station electrical failure, etc.). 123.26, 123.41(a) 1

Duration of Sewer 

Overflow event (hours)

Duration of the sewer overflow event (in hours). If the discharge has not been corrected, 

the best professional judgment from the compliance inspector of the time the sewer 

overflow is expected to continue.

123.26, 123.41(a) 1

Sewer Overflow

Discharge Volume 

(gallons)

Best professional judgment from the compliance inspector on the estimated number of 

gallons of sewer overflow.

123.26, 123.41(a) 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Failure to Submit Sewer 

Overflow Incident Report

This data element would indicate whether the POTW has failed to provide 24-hr. 

notification of sewer overflows or failed to submit sewer overflow incident follow-up 

reports within the required five days.

122.41(l)(6) and (7), 

123.26, 123.41(a) 1

Compliance Monitoring Activity (Pretreatment Inspections and Audits)

Deficiencies Identified 

Through the Pretreatment 

Inspections or Audits

This data element will identify each deficiency or deficiencies identified by EPA or the 

authorized NPDES program for each pretreatment inspection and audit. These 

deficiencies will allow users to distinguish between noncompliance and significant 

noncompliance (SNC). These deficiencies include: (1) failure to enforce against pass

through and/or interference; (2) failure to submit required reports within 30 days; (3) 

failure to meet compliance schedule milestones within 90 days; (4) failure to 

issue/reissue control mechanisms to 90% of SIUs within 6 months; (5) failure to inspect 

or sample 80% of SIUs within the past 12 months; and (6) failure to enforce standards 

and reporting requirements.

123.26, 123.41(a), 

123.45, 403.10, and 

CWA 308

1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Compliance Monitoring Activity (Discharge Monitoring Report, and Pretreatment Periodic Compliance Reports for Significant Industrial Users 

(SIUs) and Categorical Industrial Users (CIUs) when EPA or the State is the Control Authority)

Permitted Feature The identifier assigned for each location at which conditions are being applied.

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h)

1,2,3,6,8
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Limit Set The unique identifier tying the DMR form to its Limit Set record.

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1,2,3,6,8

Parameter Code The unique code/description identifying the parameter reported on the DMR.

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1,2,3,6,8

Monitoring Location The code/description of the monitoring location at which the sampling occurred for a 

DMR parameter.

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1,2,3,6,8

Monitoring Period End 

Date

The date that the monitoring period for the values covered by this DMR form ends. The 

date must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day.

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1,2,3,6,8

NODI The unique code/description that indicates the reason that “No Discharge” or “No Data” 

was reported in place of the DMR value.

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1,2,3,6,8

Value The DMR value number reported on the DMR form.

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1,2,3,6,8

Concentration Units/ 

Quantity Units

The code/description representing the unit(s) of measure applicable to quantity or 

concentration limits and measurements as entered by the user on the DMR form.

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1,2,3,6,8

Value Received Date

The date the DMR value was received by the regulatory authority. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Value Type The unique code/description identifying a DMR value type (i.e. Quantity 1, Quantity 2, 

Concentration 1, Concentration 2, Concentration 3).

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1,2,3,6,8

Qualifier The unique code identifying the limit value operator (e.g., <, =, >).

122.41(l)(4)(i), 123.26, 

123.41(a), 403.12(e), 

403.12(h) 

1,2,3,6,8

Compliance Monitoring Activity (Periodic Program Reports)

Date Report Received The date the report was received. The date must be provided in YYYY-MM-DD format 

where YYYY is the year, MM is the month, and DD is the day.

These are data elements 

that are common to 

reports required in Parts 

122, 123, 403, and 503

1

Start Date of Reporting 

Period

The start date of the reporting period. The date must be provided in YYYY-MM-DD 

format where YYYY is the year, MM is the month, and DD is the day. For the Sewer 

Overflow Event Report this is the start or best estimate of the start date for each Sewer 

Overflow Discharge Number.

These are data elements 

that are common to 

reports required in Parts 

122, 123, 403, and 503

4 through 

10

End Date of Reporting 

Period

The end date of the reporting period. The date must be provided in YYYY-MM-DD 

format where YYYY is the year, MM is the month, and DD is the day. For the Sewer 

Overflow Event Report this is the end or best estimate of the end date for each Sewer 

Overflow Discharge Number

These are data elements 

that are common to 

reports required in Parts 

122, 123, 403, and 503

4 through 

10

NPDES Data Group 

Number (Program Report)

This data element identifies for each program report submission the types of NPDES 

program data that are required to be reported by the facility. This corresponds to Table 

1 in this Appendix {e.g., 3 = Discharge Monitoring Report [40 CFR 122.41(l)(4)]}.This 

is a system generated data element. 

These are data elements 

that are common to 

reports required in Parts 

122, 123, 403, and 503

4 through 

10

Compliance Monitoring Activity (Data Elements Specific to Biosolids Annual Program Reports)
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Biosolids or Sewage 

Sludge Treatment 

Processes

This data element identifies the biosolids or sewage sludge treatment process or 

processes at the facility. For example, this may indicate whether primary, secondary, 

and tertiary treatment is being used, and the type of the biosolids or sewage sludge 

treatment process or processes used, including drying processes.

503.18, 503.28, 503.48 4

Biosolids or Sewage 

Sludge Analytical 

Methods

The unique code(s)/description(s) that identify the analytic methods used by the facility 

to analyze for enteric viruses, fecal coliforms, helminth ova, Salmonella sp., and other 

regulated parameters. EPA requires facilities to monitor for the certain parameters, 

which are listed in Tables 1, 2, 3, and 4 at 40 CFR 503. 13 and Tables 1 and 2 at 503.23

503.8(b), 503.18, 

503.28, 503.48 4

Biosolids or Sewage 

Sludge Management 

Practice

This data element will identify the type of biosolids or sewage sludge management 

practice or practices (e.g., land application, surface disposal, incineration) for each 

different form of biosolids and sewage sludge generated by the facility. This data 

element will also identify the management practices used by surface disposal site 

owners/operators (see 40 CFR 503.24).

503.18, 503.28, 503.48 4

Biosolids or Sewage 

Sludge Form

This data element describes the nature of each biosolids and sewage sludge material 

generated by the facility in terms of whether the material is a biosolid or sewage sludge

and whether the material is ultimately conveyed off-site in bulk or in bags. The facility 

will separately report the form for each biosolids or sewage sludge management 

practice or practices used by the facility.

503.18, 503.28, 503.48 4

Annual Whole Biosolids 

or Sewage Sludge 

Application Rate

This data element identifies the annual whole biosolids or sewage sludge application

rate for biosolids or sewage sludge sold or given away in bags or containers (see 40 

CFR 503.13). The facility will separately report the application rate for each biosolids 

or sewage sludge management practice used by the facility and by each biosolids or 

sewage sludge form. 

503.18 4
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Biosolids or Sewage 

Sludge Pathogen Class 

This data element will identify the pathogen class or classes (e.g., Class A, Class B) for 

biosolids or sewage sludge generated by the facility. The facility will separately report 

the pathogen class for each biosolids or sewage sludge management practice used by 

the facility and by each biosolids or sewage sludge form. 

503.18, 503.28, 503.48

Biosolids or Sewage 

Sludge Vector Attraction 

Reduction Options

This data element will identify the land application and surface disposal vector 

attraction reduction options used by the facility. The facility will separately report the 

vector attraction reduction options for each biosolids or sewage sludge management 

practice used by the facility and by each biosolids or sewage sludge form as well as by 

each biosolids or sewage sludge pathogen class. 

503.18, 503.28, 503.48 4

Biosolids or Sewage 

Sludge Land Application 

Option 

This data element will identify the land application option or options used by the 

facility (e.g., EQ, PC, CPLR, APLR). The facility will separately report the land 

application option for each biosolids or sewage sludge management practice used by the 

facility and by each biosolids or sewage sludge form as well as by each biosolids or 

sewage sludge pathogen class and each vector attraction reduction option.

503.18, 503.28, 503.48 4

Biosolids or Sewage 

Sludge Volume Amount

This is the amount (in dry metric tons) of biosolids or sewage sludge generated by the 

facility. This identification will be made for each biosolids or sewage sludge 

management practice used by the facility and by each biosolids or sewage sludge form 

as well as by each biosolids or sewage sludge pathogen class, by each vector attraction 

reduction option, and by each land application option.. 

503.18, 503.28, 503.48 4
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Biosolids or Sewage 

Sludge Monitored 

Parameter

This is the biosolids or sewage sludge parameter that is monitored by the facility. If 

there is more than one class, then the facility will separately report each monitored 

parameter for each biosolids or sewage sludge management practice used by the facility 

and by each biosolids or sewage sludge form. EPA requires facilities to monitor for the 

certain parameters, which are listed in Tables 1, 2, 3, and 4 at 40 CFR 503. 13 and 

Tables 1 and 2 at 503.23.

503.18, 503.28, 503.48 4

Biosolids or Sewage 

Sludge Monitored 

Parameter Concentration

This is the concentration value of the Biosolids or Sewage Sludge Monitored Parameter. 503.18, 503.28, 503.48 4

Biosolids or Sewage 

Sludge s Monitored 

Parameter Units

This is the measurement unit (e.g., mg/kg) associated with the Biosolids or Sewage 

Sludge Monitored Parameter Concentration. 

503.18, 503.28, 503.48 4
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Biosolids or Sewage 

Sludge Measured 

Cumulative Pollutant 

Loading Amount

This is the measured cumulative amount of a pollutant (in kg per hectare) that has been 

applied to each off-site area of land as specified in the regulations at 40 CFR 503 during 

the entire life of the application site. The list of pollutants to be measured is at 40 CFR 

503.13, Table 2. When the measured cumulative pollutant loading amount exceeds the 

Cumulative Pollutant Loading Rate (CPLR) limit for any pollutant, as identified at 40 

CFR 503.13, Table 2, no additional bulk biosolids subject to CPLR limits may be 

applied to the site.

503.13 4

Biosolids or Sewage 

Sludge Measured Annual 

Pollutant Loading 

Amount

This is the measured amount of a pollutant (in kg per hectare) that has been applied to 

each off-site area of land as specified in the regulations at 40 CFR 503 in the preceding 

365-day period. This value is compared against the Annual Pollutant Loading Rate (see 

40 CFR 503.13, Table 4) to determine compliance for each Biosolids or Sewage Sludge 

Receiving Site for each preceding 365-day period.

503.13 4

Compliance Monitoring Activity (Data Elements Specific to CAFO Annual Program Reports)

CAFO Animal Types

(Program Report)

The unique code/description that identifies the permittee’s applicable animal sector(s)

in the previous 12 months. This includes (but not limited to) beef cattle, broilers, layers, 

swine weighing 55 pounds or more, swine weighing less than 55 pounds, mature dairy 

cows, dairy heifers, veal calves, sheep and lambs, horses, ducks, and turkeys.

122.42(e)(4)(i) 5

CAFO Animal Maximum

Number (Program Report)

The maximum number of each type of animal in open confinement or housed under 

roof (either partially or totally) which are held at the facility for a total of 45 days or 

more in the previous 12 months.

122.42(e)(4)(i) 5
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

CAFO Animal Maximum 

Number in Open 

Confinement (Program 

Report)

The maximum number of each type of animal in open confinement which are held at 

the facility for a total of 45 days or more in the previous 12 months. 122.42(e)(4)(i) 5

CAFO MLPW (Program 

Report)

The unique code/description that identifies the type of CAFO material generated by the 

facility (i.e., manure, litter, and process wastewater or ‘MLPW’) in the previous 12 

months.

122.42(e)(4)(ii) 5

CAFO MLPW Amounts 

(Program Report)

The total amount of CAFO material generated by the facility (i.e., manure, litter, and 

process wastewater) in the previous 12 months.

122.42(e)(4)(ii) 5

CAFO MLPW Amounts

Units (Program Report)

The unit (e.g., tons, gallons) for the total amount of CAFO material generated by the 

facility (i.e., manure, litter, and process wastewater) in the previous 12 months.

122.42(e)(4)(ii) 5

CAFO MLPW 

Transferred (Program 

Report)

The total amount of CAFO material generated by the facility (i.e., manure, litter, and 

process wastewater) in the previous 12 months that is transferred to other persons. The 

units for this data element will be the same as the units for the “CAFO MLPW Amounts 

(Program Report)” data element.

122.42(e)(4)(iii) 5

Total Number of Acres 

for Land Application 

Covered by the Nutrient 

Management Plan

(Program Report)

Total number of acres for land application covered by the current nutrient management 

plan.

122.42(e)(4)(iv) 5

Total Number of Acres 

Used for Land 

Application (Program 

Report)

The total number of acres under control of the CAFO and used for land application in 

the previous 12 months. 122.42(e)(4)(v) 5
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Discharge Type (Program 

Report)

The unique code/description that identifies for each discharge from the permittee’s 

production area in the previous 12 month whether a 25-year, 24-hour rainfall event was 

the cause for the discharge.

122.42(e)(4)(vi), 412 5

Discovery Dates of 

Discharges from 

Production Area (Program 

Report)

The date of each discharge from the permittee’s production area in the previous 12 

months. The date must be provided in YYYY-MM-DD format where YYYY is the 

year, MM is the month, and DD is the day.

122.42(e)(4)(vi) 5

Duration of Discharges

from Production Area

(Program Report)

The estimated duration time (in hours) of each discharge from the permittee’s 

production area in the previous 12 months..

122.42(e)(4)(vi) 5

Approximate Volume of 

Discharge from 

Production Area (Program 

Report)

The approximate volume (in gallons) of each discharge from the permittee’s production 

area in the previous 12 months. 122.42(e)(4)(vi) 5

Whether NMP Approved 

or Developed by Certified 

Planner (Program Report)

The unique code/description that identifies whether the current version of the NMP was 

approved or developed by a certified nutrient management planner. 122.42(e)(4)(vii) 5

CAFO MLPW Nitrogen 

Content (Program 

Report)

The nitrogen content of CAFO material used or generated by the facility (i.e., manure, 

litter, and process wastewater) in the previous 12 months. 122.42(e)(4)(viii) 5

CAFO MLPW

Phosphorus Content 

(Program Report)

The phosphorus content of CAFO material used or generated by the facility (i.e., 

manure, litter, and process wastewater) in the previous 12 months.

122.42(e)(4)(viii) 5
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

CAFO MLPW Nitrogen 

or Phosphorus Units 

(Program Report)

The unit(s) (e.g., lbs/tons, lbs/1,000-gallons) for the nitrogen and phosphorus content of

CAFO material used or generated by the facility (i.e., manure, litter, and process 

wastewater) in the previous 12 months.

122.42(e)(4)(viii) 5

CAFO MLPW Nitrogen 

or Phosphorus Form

(Program Report)

The form (e.g., total nitrogen, ammonium-nitrogen, total phosphorus) for the nitrogen 

and phosphorus content of CAFO material used or generated by the facility (i.e., 

manure, litter, and process wastewater) in the previous 12 months.

122.42(e)(4)(viii) 5

Field Identification 

Number (Program Report)

A unique field number to which CAFO MLPWwas applied in the previous 12 months.

This data element will be used when the term “for each field” is used in the CAFO 

Annual Program Report.

122.42(e)(4)(viii) 5

Actual Crop(s) Planted for 

Each Field (Program 

Report)

Actual crop(s) planted for each field. 122.42(e)(4)(viii) 5

Actual Crop Yield(s) for 

Each Field (Program 

Report)

Actual crop yield(s) for each field. 122.42(e)(4)(viii) 5

Actual Crop Yield(s) for 

Each Field Units

(Program Report)

The unit(s) for the actual crop yield(s) for each field (e.g., bushels per acre). 122.42(e)(4)(viii) 5
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Method for Calculating 

Maximum Amounts of 

Manure, Litter, and 

Process Wastewater

(Program Report)

The unique code/description that identifies whether the CAFO used the Linear 

Approach [40 CFR 122.42(e)(5)(i)] or the Narrative Rate Approach [40 CFR 

122.42(e)(5)(ii)]. 

122.42(e)(4)(viii) 5

CAFO MLPW Land 

Application For Each 

Field (Program Report)

The unique code/description that identifies for each field the type of CAFO material 

(i.e., manure, litter, and process wastewater or ‘MLPW’) in the previous 12 months and 

used for land application.

122.42(e)(4)(viii) 5

CAFO MLPW Land 

Application Maximum 

Amount For Each Field 

(Program Report)

The maximum amount of CAFO material (i.e., manure, litter, and process wastewater) 

for each field in the previous 12 months and used for land application. The maximum 

amount of CAFO material is calculated in accordance with procedures in the Linear 

Approach [40 CFR 122.42(e)(5)(i)(B)] or the Narrative Rate Approach [40 CFR 

122.42(e)(5)(ii)(D)].

122.42(e)(4)(viii) 5

CAFO MLPW Land 

Application Actual

Amount For Each Field 

(Program Report)

The actual amount of CAFO material (i.e., manure, litter, and process wastewater) for 

each field in the previous 12 months and used for land application.

122.42(e)(4)(viii) 5

CAFO MLPW Land 

Application For Each 

Field Unit (Program 

Report)

The unit (e.g., tons, gallons) for the maximum and actual amount of CAFO material 

(i.e., manure, litter, and process wastewater) for each field in the previous 12 months 

and used for land application.

122.42(e)(4)(viii) 5

Nitrogen Soil Test

Measurement (Narrative 

Rate Approach) (Program 

Report)

For each field used for land application, the results of the most recent soil nitrogen 

analysis for any soil test taken in the preceding 12 months (i.e., amount of nitrogen in 

the soil). This data element is only applicable to facilities using the Narrative Rate 

Approach as described in 40 CFR 122.42(e)(5)(ii).

122.42(e)(4)(viii) 5
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Phosphorus Soil Test 

Measurement (Narrative 

Rate Approach) (Program 

Report)

For each field used for land application, the results of the most recent soil phosphorus 

analysis for any soil test taken in the preceding 12 months (i.e., amount of phosphorus

in the soil). This data element is only applicable to facilities using the Narrative Rate 

Approach as described in 40 CFR 122.42(e)(5)(ii).

122.42(e)(4)(viii) 5

Soil Test Measurement 

Form (Narrative Rate 

Approach) (Program 

Report)

The form (e.g., total nitrogen, ammonium-nitrogen, total phosphorus) for each soil test 

measurement. This data element is only applicable to facilities using the Narrative Rate 

Approach as described in 40 CFR 122.42(e)(5)(ii).

122.42(e)(4)(viii) 5

Soil Test Measurement 

Unit(s) (Narrative Rate 

Approach) (Program 

Report)

The unit(s) for the amounts of nitrogen and/or phosphorus for any soil test results. This 

data element is only applicable to facilities using the Narrative Rate Approach, as 

described in 40 CFR 122.42(e)(5)(ii).

122.42(e)(4)(viii) 5

Nitrogen Amount of Any 

Supplemental Fertilizer 

Applied (Program Report)

For each field used for land application, provide the amount of nitrogen in supplemental 

fertilizer applied in the previous 12 months. This data element is only applicable to 

facilities using the Narrative Rate Approach as described in 40 CFR 122.42(e)(5)(ii).

122.42(e)(4)(viii) 5

Phosphorus Amount of 

Any Supplemental 

Fertilizer Applied

(Program Report)

For each field used for land application, provide the amount of phosphorus in 

supplemental fertilizer applied in the previous 12 months. This data element is only 

applicable to facilities that are using the Narrative Rate Approach as described in 40 

CFR 122.42(e)(5)(ii).

122.42(e)(4)(viii) 5

Supplemental Fertilizer 

Applied Units (Program 

Report)

The unit(s) for the amount(s) of nitrogen and/or phosphorus in any supplemental 

fertilizer applied in the previous 12 months (e.g., ppm, pounds per acre). This data 

element is only applicable to facilities using the Narrative Rate Approach, as described 

in 40 CFR 122.42(e)(5)(ii).

122.42(e)(4)(viii) 5

Compliance Monitoring Activity (Data Elements Specific to Municipal Separate Storm Sewer System Program Reports)

(Note: The MS4 permit may require one report for each unique governmental entity or one report per permit).
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

MS4 Reliance on Other 

Government Entities:

Status Flag

This is a code indicating that the permittee relies on another unique governmental entity 

to satisfy any of the permit requirements. 122.26(d)(2)(vii),

122.34(g)(v) 6

MS4 Reliance on Other 

Government Entities: 

Permit Component Flag

This is a code that identifies for each MS4 permit component the responsible 

government entity by using the unique number for the responsible municipality. (The 

unique number would allow greater geographic resolution for the MS4 components 

being tracked and would ensure consistency from year to year. The number would 

essentially identify who is taking responsibility for complying with each MS4 permit 

component.

122.34(g)(i) and (v), 

122.35(a) and 122.42(c 6

MS4 Permit Components

Description

This code/description will identify for each unique municipality all of the permitted 

components that are included in the MS4 permit. For Phase II MS4s, these components 

will be pre-populated from the BMPs each Phase II MS4 permittee indicated it will 

implement in its NOI or permit application. The groupings of these MS4 components 

will include public education and outreach on stormwater impacts; public 

involvement/participation; illicit discharge detection and elimination; construction site 

stormwater runoff; post-construction stormwater management in new development and 

redevelopment; and pollution prevention/good housekeeping for municipal operations.

122.34(g)(3) and 

122.42(c) 6

Changes to MS4 Permit 

Components

This code/description will describe for each unique municipality any changes made to 

MS4 permit components (e.g., BMPs) during the reporting period.

122.34(g)(3)(iv) and 

122.42(c) 6

Identified Measurable 

Goal for Each MS4 

Permit Component

Identified measurable goal for each MS4 permit component for each unique 

municipality for each MS4 permit component. This data element only applies to Phase 

II MS4s.

122.34(g)(3) 6
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Status and Assessment of 

Compliance with MS4 

Permit Components

Status and assessment of the permittee’s compliance with its MS4 permit for each 

unique municipality.

122.34(g)(3) and 

122.42(c) 6

Changes to MS4 

Measurable Goals

This code/description will identify any changes the permittee made to the measurable 

goals for each unique municipality that were made since the last annual report was 

submitted.

122.34(g)(3)(iv) and 

122.42(c) 6

Progress Toward 

Achieving Identified MS4 

Measurable Goals

This is an indication of the progress made to date on achieving the identified 

measurable goals for each unique municipality for each MS4 permit component.

122.34(g)(3)(i) 6

Summary of MS4 Data 

and Monitoring Results

Provide text summary of information collected and analyzed, including monitoring 

data, if any, during the reporting period for each unique municipality for each MS4 

permit component.

122.26(d)(1)(iv) and 

(d)(2)(v), 

122.34(g)(3)(ii), and 

122.42(c)

6

Summary of Planned MS4 

Activities

Provide a text summary of the stormwater activities to be undertaken during the next 

reporting cycle for each unique municipality for each MS4 permit component.

122.34(g)(3)(iii) and 

122.42(c) 6

MS4 Enforcement Action 

Type

For each unique municipality covered under the MS4 permit, identify the types of 

enforcement actions taken during the past reporting period (e.g., notice of violations, 

stop work orders, administration orders, administrative fines, civil penalties, criminal 

actions). The unique municipality covered under the MS4 permit will identify “No 

Authority” for this data element if the municipality does not have the authority to 

conduct enforcement actions.

122.34(g)(3) and 

122.42(c) 6
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

MS4 Enforcement Action 

Number

For each unique municipality covered under the MS4 permit and for each MS4 

Enforcement Action Type, identify the number of enforcement actions taken by

responsible MS4 Municipal Enforcement Agency. The unique municipality covered 

under the MS4 permit will identify “No Authority” for this data element if the 

municipality does not have the authority to conduct enforcement actions.

122.34(g)(3) and 

122.42(c) 6

MS4 Municipality 

Enforcement Agency

For each unique municipality that has the authority to conduct enforcement actions 

covered under the MS4 permit and for each MS4 Enforcement Action Type, identify 

the corresponding MS4 Municipal Enforcement Agency by its unique municipality 

number (“Unique Number for Each Municipality Covered Under MS4 Permit”). 

122.34(g)(3) and 

122.42(c) 6
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Compliance Monitoring Activity (Data Elements Specific to Pretreatment Program Annual Reports, SIU Periodic Compliance Reports in 

Municipalities without an Approved Pretreatment Program)

SNC Published

A unique code/description that identifies whether public notice was made for each 

Significant Industrial User (SIU) and Non-Significant Categorical Industrial User

(NSCIU) in SNC.

403.12(i)(2), 

403.8(f)(2)(viii) 7

SNC with Pretreatment 

Enforceable Compliance 

Schedule Flag

A unique code/description that identifies whether each Industrial User (SIU) and NonSignificant Categorical Industrial User (NSCIU) in SNC has one or more enforceable 

compliance pretreatment schedule(s).

403.12(i)(2), 

403.8(f)(2)(viii) 7

Local Limits Adoption 

Date

This is the most recent date on which the Control Authority has adopted new local 

limits within the reporting period. The date must be provided in YYYY-MM-DD 

format where YYYY is the year, MM is the month, and DD is the day.

403.5(c), 403.12(i)(4), 

403.8(f)(4) 7

Local Limits Evaluation

Date

This is the most recent date on which the Control Authority evaluated the need for local 

limits within the reporting period. The date must be provided in YYYY-MM-DD 

format where YYYY is the year, MM is the month, and DD is the day.

122.44(j)(2)(ii), 

403.5(c), 403.12(i)(4), 

403.8(f)(4)

7

Local Limits Pollutants

This is the list of the pollutants for which the Control Authority derived local limits. 

The Control Authority will only need to enter each pollutant once no matter how many 

treatment works are managed by the Control Authority.

403.5(c), 403.12(i)(4) 7

POTW Discharge 

Contamination Indicator

(Program Report)

A unique code/description that identifies whether there have been any problems (e.g., 

pass-through or interference) with the receiving POTW’s effluent discharge within the 

reporting period. 

403.8(f), 403.12(i) 7

POTW Biosolids 

Contamination Indicator

(Program Report)

A unique code/description that identifies whether there have been any problems (e.g., 

pass-through or interference) with the receiving POTW’s biosolids within the reporting 

period.

403.8(f), 403.12(i) 7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Industrial User Control 

Mechanism Flag

A unique code/description that identifies whether the Industrial User has a current 

Control Mechanism. 403.8(f), 403.12(i) 7

Industrial User Control 

Mechanism Effective

Date

The date when the active Control Mechanism for the Industrial User is effective. The 

date must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day.

403.8(f)(1)(iii)(B)(1), 

403.12(i) 7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Industrial User Control 

Mechanism Expiration 

Date 

The date when the active Control Mechanism for the Industrial User will expire. The 

date must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day.

403.8(f), 403.12(i) 7

SNC with Pretreatment 

Standards (Program 

Report)

This data element will identify for each Significant Industrial User (SIU) and NonSignificant Categorical Industrial User (NSCIU) that is discharging (including truck 

transportation) to this POTW whether the IU was in Significant Non-Compliance 

(SNC) with pretreatment requirements in the reporting period.

403.8(f), 403.12(i) 7

SNC with Pretreatment 

Standards Pollutants 

(Program Report)

This data element will identify for each Significant Industrial User (SIU) and NonSignificant Categorical Industrial User (NSCIU) that is discharging (including truck 

transportation) the pollutants that related to the IU’s Significant Non-Compliance 

(SNC) status with pretreatment requirements in the reporting period.

403.8(f), 403.12(i) 7

SNC with Reporting 

Requirements (Program 

Report)

This data element will identify for each Significant Industrial User (SIU) and NonSignificant Categorical Industrial User (NSCIU) that is discharging (including truck 

transportation) to this POTW whether the IU was in Significant Non-Compliance 

(SNC) with reporting requirements (including baseline monitoring reports, notice of

potential problems, periodic self-monitoring reports, notice of change in Industrial User 

discharge, hazardous waste notification and BMP certification) in the reporting period.

403.8(f), 403.12(i) 7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

SNC with Other Control 

Mechanism Requirements 

(Program Report)

This data element will identify for each Significant Industrial User (SIU) and NonSignificant Categorical Industrial User (NSCIU) that is discharging (including truck 

transportation) to this POTW whether the IU was in Significant Non-Compliance 

(SNC) with any other control mechanism requirements in the reporting period.

403.8(f), 403.12(i) 7

Listing of Months in SNC

This data element will identify for each Significant Industrial User (SIU) and NonSignificant Categorical Industrial User (NSCIU) that is discharging (including truck 

transportation) to this POTW the month or months the IU is in SNC in the reporting 

period. These data must be provided in YYYY-MM format where YYYY is the year

and MM is the month.

403.8(f), 403.12(i) 7

Number of Industrial User 

Inspections by Control 

Authority

This data element will identify for each Significant Industrial User (SIU), Dental 

Industrial User (DIU), and Non-Significant Categorical Industrial User (NSCIU) the 

number of inspections conducted by the Control Authority in the reporting period. 

403.8(f), 403.12(i) 7

Number of Industrial User 

Sampling Events by

Control Authority

This data element will identify for each Significant Industrial User (SIU), Dental 

Industrial User (DIU), and Non-Significant Categorical Industrial User (NSCIU) the 

number of complete sampling events conducted by the Control Authority in the 

reporting period.

403.8(f), 403.12(i) 7

Number of Required 

Industrial User SelfMonitoring Events

This data element will identify for each Significant Industrial User (SIU), Dental 

Industrial User (DIU), and Non-Significant Categorical Industrial User (NSCIU) the 

number of required self-monitoring sampling events in the reporting period that must be 

reported to the Control Authority.

403.8(f), 403.12(i) 7

Actual Number of 

Industrial User SelfMonitoring Events 

This data element will identify for each Significant Industrial User (SIU), Dental 

Industrial User (DIU), and Non-Significant Categorical Industrial User (NSCIU) the 

actual number of self-monitoring sampling events in the reporting period submitted to 

the Control Authority.

403.8(f), 403.12(i) 7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Types of Industrial User 

Enforcement Action

This data element will identify for each Significant Industrial User (SIU), Dental 

Industrial User (DIU), and Non-Significant Categorical Industrial User (NSCIU) the 

type(s) of enforcement action(s) (e.g., formal notices of violation or equivalent actions, 

administrative orders, civil suits, criminal suits) issued by the Control Authority in the 

reporting period.

403.8(f), 403.12(i) 7

Number of Industrial User 

Enforcement Actions

This data element will identify for each Significant Industrial User (SIU), Dental 

Industrial User, and Non-Significant Categorical Industrial User (NSCIU) and for each 

type of enforcement action the total number of enforcement actions issued by the 

Control Authority in the reporting period.

403.8(f), 403.12(i) 7

Industrial User Cash Civil 

Penalty Amount Assessed

For civil judicial Enforcement Actions, the dollar amount of the penalty assessed 

against each Significant Industrial User (SIU), Dental Industrial User (DIU), and NonSignificant Categorical Industrial User (NSCIU) in the reporting period as specified in 

the final entered Consent Decree or Court Order. For Administrative Enforcement 

Actions, it is the dollar amount of the penalty assessed in the Consent/Final Order.

CWA Section 309 7
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Industrial User Cash Civil 

Penalty Amount Collected

For civil judicial Enforcement Actions, the dollar amount of the penalty collected from 

each Significant Industrial User (SIU), Dental Industrial User (DIU), and NonSignificant Categorical Industrial User (NSCIU) in the reporting period. For 

Administrative Enforcement Actions, it is the dollar amount collected of the penalty 

assessed in the Consent/Final Order.

CWA Section 309 7

Industrial User POTW 

Discharge Contamination 

Indicator (Program 

Report)

This data element will identify for each Significant Industrial User (SIU), Dental 

Industrial User (DIU), and Non-Significant Categorical Industrial User (NSCIU) 

whether the Industrial User caused or contributed to any problems with the receiving 

POTW’s effluent discharge in the previous reporting period. EPA regulations require 

the Control Authority to develop and enforce local limits when the discharge from an 

IU causes or contributes to any problems (e.g., pass-through or interference) at the 

receiving POTW. 

403.5(c), 403.8(f), 

403.12(i) 7

Industrial User Biosolids 

Contamination Indicator

(Program Report)

This data element will identify for each Significant Industrial User (SIU), Dental 

Industrial User (DIU), and Non-Significant Categorical Industrial User (NSCIU) 

whether the Industrial User caused or contributed to any problems with the receiving 

POTW’s biosolids in the previous reporting period. EPA regulations require the Control 

Authority to develop and enforce local limits when the discharge from an IU causes or 

contributes to any problems (e.g., pass-through or interference) at the receiving POTW. 

403.5(c), 403.8(f), 

403.12(i) 7

Industrial User 

Wastewater Flow Rate 

(Program Report)

This data element will identify for each Significant Industrial User (SIU) and NonSignificant Categorical Industrial User (NSCIU) that is discharging (including truck 

transportation) to this POTW the total wastewater flow rate (in gallons per day) in the 

previous reporting period.

403.8(f), 403.12(i) 7,8
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Middle-Tier Significant 

Industrial User Reduced 

Reporting Flag

This code/description will identify for each Middle-Tier Significant Industrial User

(MTSIU) whether the Control Authority has granted reduced reporting requirements in 

accordance with 40 CFR 403.12(e)(3).

403.12(e)(3), 

403.12(i)(2) 7

Non-Significant 

Categorical Industrial 

User (NSCIU) and Dental 

Industrial User (DIU) 

Certification Submitted to 

Control Authority

This code/description will identify for each Non-Significant Categorical Industrial User 

(NSCIU) and Dental Industrial User (DIU) whether it has given its required annual 

compliance certification within the reporting period.

403.12(i)(2), 403.12(q) 7,8

Control Authority 

Resources

A unique code/description that identifies whether the pretreatment program has 

sufficient resources (e.g., budget, full-time equivalent labor) to fully implement its 

pretreatment program.

403.12(i)(4) 7

Compliance Monitoring Activity (Data Elements Specific to Sewer Overflow Event Reports)
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Sewer Overflow 

Discharge Number

This data element will allow the reporting of multiple sewer overflows on one report. 

Each individualized sewer overflow will be given a unique number (e.g., 1, 2, 3, and so 

on) for each Sewer Overflow Event Report. This field will be system generated to 

accommodate one or more individual sewer overflows.

122.41(l)(6) and (7) 9

Sewer Overflow

Permitted Feature

This data element will identify the permitted feature(s), if any, for each Sewer Overflow 

Discharge Number. If the sewer overflow is not associated with a permitted feature than 

this data element can be left blank.

122.41(l)(6) and (7) 9

Sewer Overflow

Longitude (Sewer 

Overflow Event Report)

This data element is required for each Sewer Overflow Discharge Number that does not 

have a permitted feature identifier, which is reported on the NPDES permit application 

or Notice of Intent for NPDES permit coverage. The measure of the angular distance on 

a meridian east or west of the prime meridian for the sewer overflow. Entered in either 

Decimal Degrees or in Degrees Minutes Seconds; stored in decimal degrees (e.g., -

77.029289). These data are provided in accordance with Environmental Data Standards 

Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, January 6, 

2006. If the sewer overflow is associated with a permitted feature than this data element 

can be left blank.

122.41(l)(6) and (7) 9

Sewer Overflow Latitude

(Sewer Overflow Event 

Report)

This data element is required for each Sewer Overflow Discharge Number that does not 

have a permitted feature identifier, which is reported on the NPDES permit application 

or Notice of Intent for NPDES permit coverage. The measure of the angular distance on 

a meridian north or south of the equator for the sewer overflow. Entered in either 

Decimal Degrees or in Degrees Minutes Seconds; stored in decimal degrees (e.g., -

77.029289). These data are provided in accordance with Environmental Data Standards 

Council, Latitude/Longitude Data Standard, Standard No.: EX000017.2, January 6, 

2006. If the sewer overflow is associated with a permitted feature than this data element 

can be left blank.

122.41(l)(6) and (7) 9
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Type of Sewer Overflow

(Sewer Overflow Event 

Report)

A code identifying the type of sewer overflow (including CSO, SSO, or Bypassfrom the 

Collection System or Treatment Works) for each Sewer Overflow Discharge Number.

122.41(l)(6) and (7) 9

Sewer Overflow Cause

The likely cause of the overflow event (e.g., broken pipe, fats/oil/grease, mechanical 

failure, pump station electrical failure, inadequate sewer system capacity, etc.) for each 

Sewer Overflow Discharge Number.

122.41(l)(6) and (7) 9

Duration of Sewer 

Overflow event (hours)

(Sewer Overflow Event 

Report)

Duration of the sewer overflow event (in hours) for each Sewer Overflow Discharge 

Number. If the discharge has not been corrected, the best professional judgment from 

the permitted facility of the time the sewer overflow is expected to continue.

122.41(l)(6) and (7) 9

Sewer Overflow

Discharge Volume 

(gallons) (Sewer 

Overflow Event Report)

Best professional judgment from the permitted facility on the estimated number of 

gallons of sewer overflow for each Sewer Overflow Discharge Number. 

122.41(l)(6) and (7) 9

Receiving Waterbody 

Name for Permitted 

Feature (Sewer Overflow 

Event Report)

This data element is required for sewer overflow inspections without a permitted feature 

identifier. Best professional judgment from the permitted facility of the name of the 

waterbody that is or will likely receive the discharge from each Sewer Overflow 

Discharge Number.

122.41(l)(6) and (7) 9

Dry or Wet Weather

Occurrence for Sewer 

Overflow

Best professional judgment from the permitted facility on whether the sewer overflow, 

by Sewer Overflow Discharge Number, occurred during dry or wet weather. 122.41(l)(6) and (7) 9
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Corrective Actions Taken 

or Planned for Sewer 

Overflows (Sewer 

Overflow Event Report)

The unique code/description that describes the steps taken or planned to reduce, 

eliminate, and prevent reoccurrence of future sewer overflows for each Sewer Overflow 

Discharge Number. 

122.41(l)(6) and (7) 9

Type of Potential Impact 

of Sewer Overflow Event 

(Sewer Overflow Event 

Report)

This describes the type of potential human health or environmental impact(s) (e.g., 

beach closure) for each Sewer Overflow Discharge Number. Under 40 CFR 

122.41(l)(6), “the permittee shall report any noncompliance which may endanger health 

or the environment.” This data element would provide information regarding the nature 

of such potential endangerment.

122.41(l)(6) and (7) 9

Compliance Monitoring Activity (Data Elements Specific to CWA Section 316(b) Annual Reports)

Biological Monitoring –

Request for Reduce 

Monitoring Approval 

Date

The date the director approved the request for reduced biological monitoring as outlined 

in 40 CFR 125.87(a), 125.96, or 125.137.

125.87, 125.96, 125.137, 

401.14 and CWA 316(b) 1

Velocity Monitoring -

Compliance with the 

Velocity Requirements

The unique code/description indicating whether or not the facility is in compliance with 

the velocity requirement for each permitted cooling water intake structure. 1 = new 

facility is in compliance with the Maximum Through-Screen Design Intake Velocity of

0.5 fps as require under 125.84(b)(2) or (c)(1) or 125.134(b)(2), 2 = new facility is 

reducing the level of adverse environmental impact to a comparable level as require 

under 125.84(d) or 125.134(c)(1), 3 = new facility is in compliance with alternative 

requirements as outlined in 125.85 or 125.135, 4 = existing facility if velocity 

monitoring is required, is in compliance with the maximum design intake velocity of

0.5 fps, the maximum actual through screen velocity of 0.5 fps, or an alternative 

requirements established by the Director. A value of zero means the facility is not 

subject to 125 Subpart I, J, or N and is in compliance with the limits based on BPJ.

125.87, 125.96, 125.137, 

401.14 and CWA 316(b) 10
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

CWA 316(b) Biological 

Monitoring - Species 

Name (Program Report)

For new and existing facilities, a listing of each species (or relevant taxa) for all life 

stages in the vicinity of the cooling water intake structure.

125.87, 125.96, 125.98 

125.137, 401.14 and 

CWA 316(b)

10

CWA 316(b) Biological 

Monitoring - Species 

Number (Program Report)

For new and existing facilities, the number of each species (or relevant taxa) in the 

vicinity of the cooling water intake structure.

125.87, 125.96, 125.98 

125.137, 401.14 and 

CWA 316(b)

10

CWA 316(b) Biological 

Monitoring - Threatened 

or Endangered Flag

(Program Report)

For new and existing facilities, a unique code/description that describes for each species 

(or relevant taxa) whether the species is threatened, endangered, or is an otherwise

protected species that might be susceptible to impingement and entrainment at the 

facility’s cooling water intake structures.

125.87, 125.96, 125.98 

125.137, 401.14 and 

CWA 316(b)

10

CWA 316(b) Biological 

Monitoring - Species 

Impinged and Entrained 

(Program Report)

For new and existing facilities, the number of each species (or relevant taxa) impinged 

and entrained per year in the vicinity of the cooling water intake structure.

125.87, 125.96, 125.98 

125.137, 401.14 and 

CWA 316(b)

10

Data Elements Common to Violations, Enforcement Actions, and Final Orders

Violation Code

The code/description that uniquely identifies each type of violation that has occurred at 

the facility (e.g., D80 = Required Monitoring DMR Value Non-Receipt, E90 = Effluent 

Violation, C20 = Schedule Event Achieved Late). This includes single event violations

(SEVs) and violations that are automatically generated based upon DMRs, schedules, 

etc.

CWA Section 309, 

123.45 1

Violation Date

This is the date of the violation, which varies depending on the type of violation. The 

date must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day.This data element may be system generated.

CWA Section 309, 

123.45 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Violations

Agency Identifying the 

Single Event Violation 

(SEV)

The code/description identifying the agency that identified the single event violation 

(SEV).

123.26, 123.41(a), 

123.45 1

Single Event Violation 

Date

The date of a single event violation (SEV) that occurred on one date. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

123.26, 123.41(a),

123.45 1

Single Event Violation 

Start Date

If the single event violation (SEV) occurred over multiple days, the date the occurrence 

began. The date must be provided in YYYY-MM-DD format where YYYY is the year, 

MM is the month, and DD is the day.

123.26, 123.41(a),

123.45 1

Single Event Violation 

End Date

If the single event violation (SEV) occurred over multiple days, the date the occurrence 

ended. This field will be left blank to denote an ongoing or unresolved SEV. The date

must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day.

123.26, 123.41(a),

123.45 1

RNC Detection Code The type of reportable noncompliance (RNC) detected. It can be entered automatically 

by the system or it can be entered manually.

123.26, 123.41(a),

123.45 1

RNC Detection Date 

The date that reportable noncompliance (RNC) was detected. It can be entered manually 

or automatically. This date may vary according to the type of violation detected. The 

date must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day.

123.26, 123.41(a),

123.45 1

RNC Resolution Code 

The reportable noncompliance (RNC) status (i.e., noncompliant, resolved pending, 

waiting resolution, resolved) of the violation. It can be entered manually or 

automatically by the system.

123.26, 123.41(a),

123.45 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

RNC Resolution Date 

The date reportable noncompliance (RNC) was marked to its current resolution status. 

It can be entered manually or automatically. The date must be provided in YYYY-MMDD format where YYYY is the year, MM is the month, and DD is the day.

123.26, 123.41(a),

123.45 1

Enforcement Actions

Enforcement Action 

Identifier

The number of the enforcement action; for a judicial action, the number as referred to 

by the Court where the action was filed. For Federal enforcement actions, this field will 

be have three components, each separated by a hyphen (e.g., HQ-2003-1234). States 

will be able to use this same structure, or they will be able to use a different structure of 

their choosing provided that the first two characters of the identifier constitute the state 

code.

123.27, 123.41(a), and 

CWA Section 309 1

Enforcement Action 

Name

The name associated with this enforcement action. 123.27, 123.41(a), and 

CWA Section 309 1

Enforcement Action Type

The code/description that uniquely identifies the type of formal or informal enforcement 

action. This code identifies, for example, whether the enforcement action is a civil 

judicial referral, a notice of violation, an administrative penalty order, administrative 

order, etc. 

123.27, 123.41(a), and 

CWA Section 309 1

Programs Violated The code/description that uniquely identifies each program (e.g., pretreatment) 

associated with the enforcement activity.

123.27, 123.41(a), and 

CWA Section 309 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

dateMM is the month, and 

Milestones/ Sub-activities This data element describes the milestones and sub-activities. Some of these milestones 

are system generated.

123.27, 123.41(a), and 

CWA Section 309 1

Sub-Activity Type Code

A code/description that uniquely identifies each type of enforcement action milestone 

and/or sub-activity (e.g., COMPS = compliance achieved, MECDJ = motion to enforce 

consent agreement, AHRG = administrative hearing, AMNCA = amended complaint). 

Some of these milestones are system generated.

123.27, 123.41(a), and 

CWA Section 309 1

Actual Date

The date on which the milestone was achieved/sub activity was conducted. The date

must be provided in YYYY-MM-DD format where YYYY is the year, MM is the 

month, and DD is the day. Some of these dates are system generated.

123.27, 123.41(a), and 

CWA Section 309 1

Final Orders
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Final Order Type

A code/description that uniquely identifies the regulatory instrument used by the EPA 

to settle the enforcement action. This code identifies, for example, whether the final 

order is an administrative compliance order, an administrative penalty order, Federal 

facility agreement, etc.

123.27, 123.41(a), and 

CWA Section 309 1

dateMM is the month, and 

Final Order Issued/ 

Entered Date

For a judicial enforcement action this is the date the Clerk of the Court stamps the

document after it is signed by the presiding Judge. For an administrative formal 

enforcement action this is the date the Final Order was issued. The date must be 

provided in YYYY-MM-DD format where YYYY is the year, MM is the month, and 

DD is the day.

123.27, 123.41(a), and 

CWA Section 309 1

Penalty

Civil Penalty Amount 

Assessed

For civil judicial enforcement actions, the dollar amount of the penalty assessed against 

the defendant(s) as specified in the final entered Consent Decree or Court Order. For 

administrative enforcement actions, it is the dollar amount of the penalty assessed in the 

Consent or Final Order.

123.27, 123.41(a), and 

CWA Section 309 1
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Table 2: Required NPDES Data

Data Name Data Description

CWA, Regulatory (40 

CFR), or Other

Citation

NPDES 

Data 

Group 

Number

(see Table 

1)

Civil Penalty Amount 

Collected

For civil judicial enforcement actions, the dollar amount of the penalty collected from 

the defendant(s). For administrative enforcement actions, it is the dollar amount 

collected of the penalty assessed in the Consent or Final Order.

123.27, 123.41(a), and 

CWA Section 309 1

Compliance Schedule

Compliance Schedule 

Number

A two-digit number which in combination with the Compliance Schedule Type and 

NPDES ID uniquely identifies a compliance schedule.

123.27, 123.41(a), and 

CWA Section 309 1

Compliance Schedule 

Type

The code/description that identifies the type of compliance schedule (e.g., an 

administrative formal action has the code “A”, a judicial action has the code “J”).

123.27, 123.41(a), and 

CWA Section 309 1

Compliance Schedule 

Description

The code/description that identifies each type of condition or requirement

(e.g., best management practices plan development) for the compliance schedule.

123.27, 123.41(a), and 

CWA Section 309 1

Compliance Schedule 

Event Code

The unique code/description that identifies each event that is added within a compliance

schedule.

123.27, 123.41(a), and 

CWA Section 309 1

Compliance Schedule 

Date

The date the compliance schedule event is scheduled to be completed (i.e., the due 

date). The date must be provided in YYYY-MM-DD format where YYYY is the year, 

MM is the month, and DD is the day.

123.27, 123.41(a), and 

CWA Section 309 1

Compliance Schedule 

Actual Date

The actual date on which the compliance schedule event was completed or achieved.

The date must be provided in YYYY-MM-DD format where YYYY is the year, MM is 

the month, and DD is the day.

123.27, 123.41(a), and 

CWA Section 309 1

Compliance Schedule 

Report Received Date

The date the regulatory agency received the report required by the compliance schedule 

report. The date must be provided in YYYY-MM-DD format where YYYY is the year, 

MM is the month, and DD is the day.

123.27, 123.41(a), and 

CWA Section 309 1
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Notes:

(1) The NPDES program authority may pre-populate these data elements and other data elements (e.g., Federal Registry System ID) in the NPDES electronic 

reporting systems in order to create efficiencies and standardization. For example, the NPDES program authority may configure their electronic reporting system 

to automatically generate NPDES IDs for control mechanisms for new facilities reported on a Pretreatment Program Annual Report [40 CFR 403.12(i)]. 

Additionally, the NPDES program authority can decide whether to allow NPDES regulated entities to override these pre-populated data. 

(2) The data elements in this table conform to EPA’s policy regarding the application requirements for renewal or reissuance of NPDES permits for discharges 

from municipal separate storm sewer systems (see 61 FR 41698; 6 August 1996). 

(3) The data elements in this table are also supported by the Office Management and Budget approved permit applications and forms for the NPDES program.