reglab/statecodes huggingface dataset:
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-382 - Inorganic chemicals compliance

Current through Register Vol. 40, No. 24, July 15, 2024
A. When the results of sampling for antimony,
				arsenic, asbestos, barium, beryllium, cadmium, cyanide (as free cyanide),
				chromium, fluoride, mercury, nickel, selenium, or thallium exceed the
				applicable PMCL, the owner shall collect a confirmation sample at the same
				sampling point within two weeks of notification of the analytical results of
				the first sample. The fluoride PMCL applies only to community waterworks.
1. The results of the initial and
				confirmation samples shall be averaged to determine compliance with subsection
				A of this section. The department has the discretion to delete results of
				obvious sampling errors.
2.
				Compliance with the PMCLs for antimony, arsenic, asbestos, barium, beryllium,
				cadmium, cyanide (as free cyanide), chromium, fluoride, mercury, nickel,
				selenium, and thallium listed in Table 340.1 shall be determined based on the
				analytical results obtained at each sampling point.
a. For the owner of a waterworks that
				conducts monitoring more frequently than annually, compliance with the PMCL for
				antimony, arsenic, asbestos, barium, beryllium, cadmium, cyanide (as free
				cyanide), chromium, fluoride, mercury, nickel, selenium, or thallium is
				determined by an RAA at each sampling point. If the average at any sampling
				point is greater than the PMCL, then the waterworks is out of compliance. If
				any single sample would cause the annual average to be exceeded, then the
				waterworks is out of compliance immediately. A sample result below the MDL
				shall be calculated as zero for the purpose of determining the annual average.
				If the owner fails to collect the required number of samples, compliance
				(average concentration) shall be based on the total number of samples
				collected.
b. For the owner of a
				waterworks that monitors annually or less frequently, the waterworks is not out
				of compliance with the PMCL for antimony, arsenic, asbestos, barium, beryllium,
				cadmium, cyanide (as free cyanide), chromium, fluoride, mercury, nickel,
				selenium, or thallium if the average of the original sample and a confirmation
				sample of a contaminant at any sampling point is greater than the PMCL. If
				sample results for the owner monitoring annually or less frequently exceed the
				PMCL, the owner shall begin quarterly sampling. The owner shall not be
				considered in violation of the PMCL until one year of quarterly sampling has
				been completed and the RAA is exceeded. However, if the confirmation sample is
				not collected, the owner is in violation of the PMCL for antimony, arsenic,
				asbestos, barium, beryllium, cadmium, cyanide (as free cyanide), chromium,
				fluoride, mercury, nickel, selenium, or thallium. If the owner fails to collect
				the required number of samples, then compliance (average concentration) shall
				be based on the total number of samples collected.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-383 - Organic chemicals compliance

Current through Register Vol. 40, No. 24, July 15, 2024
A. When the results of sampling indicate
				positive results for contaminants listed in Table 340.2, the owner shall
				collect a confirmation sample at the same sampling point within two weeks of
				notification of the analytical results of the first sample.
B. The results of the initial and
				confirmation samples shall be averaged to determine waterworks compliance in
				accordance with subsection C of this section. The department has the discretion
				to delete results of obvious sampling errors.
C. Compliance with Table 340.2 shall be
				determined based on the analytical results obtained at each sampling point. A
				sample result below the detection limit shall be calculated as zero for the
				purposes of determining the annual average. If the owner fails to collect the
				required number of samples, then compliance (average concentration) shall be
				based on the total number of samples collected.
1. For the owner of a waterworks that
				conducts monitoring more frequently than annually, compliance is determined by
				an RAA of all samples collected at each sampling point. If the annual average
				of any sampling point is greater than the PMCL, then the waterworks is out of
				compliance. If the initial sample or a subsequent sample would cause the annual
				average to be exceeded, then the waterworks is out of compliance immediately. A
				sample result below the detection limit shall be calculated as zero for
				purposes of determining the annual average.
2. If the owner is conducting monitoring
				annually or less frequently, then the owner is not in violation if the average
				of the initial and confirmation samples is greater than the PMCL for that
				contaminant; however, the owner shall begin quarterly sampling. The owner will
				not be considered in violation of the PMCL until one year of quarterly sampling
				has been completed and the RAA is exceeded. If any sample will cause the RAA to
				exceed the PMCL at any sampling point, then the waterworks is immediately out
				of compliance with the PMCL.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-384 - Residual disinfectant, DBPs, and DBPPs compliance

Current through Register Vol. 40, No. 24, July 15, 2024
A. General requirements.
1. Where compliance is based on an RAA of
				monthly or quarterly samples or averages and the owner fails to monitor for
				TTHM, HAA5, or bromate, this failure to monitor shall be treated as a
				monitoring violation for the entire period covered by the annual average. Where
				compliance is based on an RAA of monthly or quarterly samples or averages and
				the owner's failure to monitor makes it impossible to determine compliance with
				MRDLs for chlorine and chloramines, this failure to monitor shall be treated as
				a monitoring violation for the entire period covered by the annual
				average.
2. All samples collected
				and analyzed under the provisions of this section shall be included in
				determining compliance, even if that number is greater than the minimum
				required.
3. The owner is in
				violation of the PMCL when the LRAA exceeds the PMCLs listed in Table 340.6
				calculated based on four consecutive quarters of monitoring, or the LRAA
				calculated based on fewer than four quarters of data if the PMCL would be
				exceeded regardless of the monitoring results of subsequent quarters. The owner
				is in violation of the monitoring requirements for each quarter that a
				monitoring result would be used in calculating the LRAA if the owner fails to
				monitor.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-385 - Lead and copper AL compliance

Current through Register Vol. 40, No. 24, July 15, 2024
A. The lead AL is exceeded if the
				concentration of lead in more than 10% of tap water samples collected during
				any monitoring period conducted in accordance with
				12VAC5-590-375
				B is greater than 0.015 mg/L (i.e., if the 90th percentile lead level is
				greater than 0.015 mg/L).
B. The
				copper AL is exceeded if the concentration of copper in more than 10% of tap
				water samples collected during any monitoring period conducted in accordance
				with
				12VAC5-590-375
				B is greater than 1.3 mg/L (i.e., if the 90th percentile copper level is
				greater than 1.3 mg/L).
C. The 90th
				percentile lead and copper levels shall be computed as follows:
1. The results of all lead or copper samples
				taken during a monitoring period shall be placed in ascending order from the
				sample with the lowest concentration to the sample with the highest
				concentration. Each sampling result shall be assigned a number, ascending by
				single integers beginning with the number 1 for the sample with the lowest
				contaminant level. The number assigned to the sample with the highest
				contaminant level shall be equal to the total number of samples
				taken.
2. The number of samples
				taken during the monitoring period shall be multiplied by 0.9.
3. The contaminant concentration in the
				numbered sample yielded by the calculation in subdivision C 2 of this section
				is the 90th percentile contaminant level.
4. For a waterworks serving fewer than 100
				people, and the owner collects five samples per monitoring period, the 90th
				percentile is computed by taking the average of the highest and second highest
				concentrations.
5. For the owner
				that has been allowed by the department to collect fewer than five samples in
				accordance with
				12VAC5-590-375
				B 3, the sample result with the highest concentration is considered the 90th
				percentile value.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-388 - Radiological compliance

Current through Register Vol. 40, No. 24, July 15, 2024
A. MCLGs
				for radionuclides are listed in Table 546.1 of 12VAC5-590-546 B.
B. PMCLs for radionuclides are applicable to
				community waterworks only and are listed in Table 340.4. Compliance with PMCLs
				will be determined based on the analytical results obtained at each entry
				point. If the sample result at one entry point exceeds the PMCL, then the owner
				is in violation of the PMCL.
1. For the owner
				that is monitoring more than once per year, compliance with the PMCL is
				determined by an RAA of the analytical results at each entry point. If the
				average result at any entry point is greater than the PMCL, then the waterworks
				is out of compliance with the PMCL.
2. For the owner of a waterworks that
				monitors more than once per year, if any sample result will cause the RAA to
				exceed the PMCL at any entry point, then the waterworks is out of compliance
				with the PMCL immediately.
3. All
				samples collected and analyzed under the provisions 12VAC5-590-378 shall be
				included in determining compliance, even if that number is greater than the
				minimum required.
4. If the owner
				does not collect all required samples when compliance is based on an RAA result
				of quarterly samples, then compliance will be based on the RAA result of the
				samples collected.
5. If a sample
				result is less than the detection limit as specified in Table 378.1, then zero
				will be used to calculate the RAA unless a gross alpha particle activity result
				is being used instead of radium-226 or uranium. If the gross alpha particle
				activity result is less than the detection limit as specified in Table 378.1,
				then one half the detection limit will be used to calculate the RAA.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-390 - Physical constituent compliance

Current through Register Vol. 40, No. 24, July 15, 2024
A. Color, odor, pH, and total dissolved
				solids.
1. When the sampling results for
				color, odor, pH, or total dissolved solids exceed the applicable SMCL, the
				owner shall collect a confirmation sample at the same sampling site within two
				weeks of notification of the analytical results of the first sample.
2. The results of the initial and
				confirmation samples shall be averaged to determine compliance with
				12VAC5-590-340
				C. The department has the discretion to void results of obvious sampling
				errors.
3. If the average
				concentration level of any contaminant of color, odor, pH, or total dissolved
				solids is greater than the SMCL listed in Table 340.3, then the department
				shall determine whether treatment to remove that contaminant can be
				accomplished or more suitable supplies of source water are, or can be made,
				available.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-391 - Treatment technique requirements

Current through Register Vol. 40, No. 24, July 15, 2024
A. When it is not technically or economically
				feasible to monitor for a particular PMCL or a contaminant, one or more
				specific treatment techniques that lead to a reduction in the concentration
				level of that contaminant shall be required. The application of that treatment
				technique reduces the contaminant in question to a concentration level that
				achieves compliance with this chapter.
B. Failure to continuously maintain the
				treatment technique is a violation of this chapter and public notification in
				accordance with
				12VAC5-590-540 A 2
				is required.
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-392 - Coliform treatment technique triggers and assessment requirements

Current through Register Vol. 40, No. 24, July 15, 2024
A. Assessments
				shall be conducted in accordance with subsections C, D, and E of this section
				after exceeding treatment technique triggers.
B. Treatment technique triggers.
1. Level 1 treatment technique triggers:
a. For the owner required to collect 40 or
				more samples per month, the number of total coliform-positive samples exceeds
				5.0% of the number of samples collected for the month.
b. For the owner required to collect fewer
				than 40 samples per month, when there are two or more total coliform-positive
				samples in the same month.
c. The
				owner fails to collect every required repeat sample after any single total
				coliform-positive sample.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-395 - Surface water and GUDI sources, polymers, and recycle treatment techniques

Current through Register Vol. 40, No. 24, July 15, 2024
A. Surface
				water and GUDI source treatment techniques.
1. The filtration and disinfection provisions
				of this section are required treatment techniques for a waterworks supplied by
				a surface water source, a GUDI source, or both. These treatment technique
				requirements are in place of a PMCL for the following contaminants: Giardia
				lamblia, viruses, heterotrophic bacteria, Cryptosporidium, Legionella, and
				turbidity. A waterworks that uses a surface water source, a GUDI source, or
				both shall provide treatment of that source water that complies with these
				treatment technique requirements. See 12VAC5-590-401 for filtration log removal
				credits and required log inactivation for Cryptosporidium. See
				12VAC5-590-500
				for log removal credits and required log inactivation for Giardia lamblia and
				viruses. These treatment technique requirements consist of installing and
				properly operating water treatment processes that reliably achieve:
a. At least 99.9% (3-log) removal or
				inactivation of Giardia lambliabetween a point where the source water is not
				subject to recontamination by surface water runoff and a point downstream
				before or at the first customer;
b.
				At least 99.99% (4-log) removal or inactivation of viruses between a point
				where the source water is not subject to recontamination by surface water
				runoff and a point downstream before or at the first customer; and
c. At least 99% (2-log) removal of
				Cryptosporidium between a point where the source water is not subject to
				recontamination by surface water runoff and a point downstream before or at the
				first customer.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-400

Current through Register Vol. 40, No. 24, July 15, 2024
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-410

Current through Register Vol. 40, No. 24, July 15, 2024
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-415 - Uncovered finished water storage

Current through Register Vol. 40, No. 24, July 15, 2024
A. A waterworks with uncovered finished water
				storage facilities shall comply with the requirements to cover the facility as
				described in this section.
B. The
				owner shall immediately notify the department of the use of each uncovered
				finished water storage facility.
C.
				All uncovered finished water storage facilities shall be covered in compliance
				with a schedule approved by the department.
D. Failure to comply with the requirements of
				this section is a violation of the treatment technique requirement.
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-420

Current through Register Vol. 40, No. 24, July 15, 2024
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-421 - Groundwater system treatment techniques

Current through Register Vol. 40, No. 24, July 15, 2024
A. The owner of a groundwater system that (i)
				has a confirmed E. coli contamination as described in
				12VAC5-590-379
				B or (ii) has been notified in writing of a significant deficiency as described
				in
				12VAC5-590-350 D
				shall meet the requirements of this section. Failure to meet any requirement of
				this section after the applicable time period specified is a treatment
				technique violation.
1. The owner shall
				implement one or more of the following corrective actions:
a. Correct all significant
				deficiencies;
b. Provide an
				alternate source of water;
c.
				Eliminate the source of contamination; or
d. Provide treatment of the groundwater
				source that reliably achieves at least 4-log treatment of viruses before or at
				the first customer.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-425

Current through Register Vol. 40, No. 24, July 15, 2024
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-430 - Determination of surface water influence of groundwater sources

Current through Register Vol. 40, No. 24, July 15, 2024
A. A groundwater
				source utilized by a waterworks, including wells, springs, and infiltration
				galleries, shall be evaluated by the department and a determination of surface
				water influence shall be made by the department. The owner shall provide to the
				department all necessary information to make this determination in accordance
				with the three-step procedure described in subsection B of this
				section.
B. The groundwater source
				shall be evaluated and subjected to the criteria in a stepwise fashion. Once
				the department has made a determination with regard to surface water influence,
				it is not necessary to continue to the next step:
1. Step 1. Evaluation of source history,
				construction, and location.
a. The source is
				under the direct influence of surface water if it has been directly associated
				with a biological waterborne disease outbreak.
b. The source is under the direct influence
				of surface water if there are any demonstrated or known direct connections
				between the source to surface water via surface water bodies, sinkholes,
				troughs, drainage ways, or other geologic features.
c. The source is under the direct influence
				of surface water if a sanitary survey reveals, or there is other evidence to
				indicate, that surface water is directly entering the source.
d. If the department has not determined that
				the source is influenced by surface water based upon the criteria in
				subdivisions B 1 a, B 1 b, and B 1 c of this section, then the source
				evaluation proceeds to Step 2.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-440 - Analytical methods

Current through Register Vol. 40, No. 24, July 15, 2024
A. All drinking
				water analyses for compliance purposes shall be performed by analytical methods
				that are consistent with current EPA regulations found at 40 CFR Part 141 and
				40 CFR Part 143. Standards for laboratories seeking certification to perform
				drinking water analyses are found in the Regulation for the Certification of
				Laboratories Analyzing Drinking Water (1VAC30-41) and regulations for the
				Accreditation for Commercial Environmental Laboratories (1VAC30-46) promulgated
				by the Department of General Services, DCLS.
B. For the purposes of determining
				compliance, the department will only accept results from samples that have been
				collected, handled, processed, and documented in accordance with the Regulation
				for the Certification of Laboratories Analyzing Drinking Water (1VAC30-41) and
				regulations for the Accreditation for Commercial Environmental Laboratories
				(1VAC30-46).
C. Testing for
				alkalinity, calcium, conductivity, residual disinfectant, orthophosphate, pH,
				silica, temperature, bromide, turbidity, TOC, DOC, SUVA, and
				UV254 for compliance may be performed by any person or
				party acceptable to the department in accordance with methods specified in 40
				CFR Part 141.
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-450 - Facility and personnel management

Current through Register Vol. 40, No. 24, July 15, 2024
Waterworks operation comprises the constant oversight and
				  management of the facilities and personnel. Consideration shall be given to
				  such factors as the competency of personnel; water quality, including drinking
				  water standards; water treatment plant maintenance and cleanliness; analytical
				  laboratory control; and the operation and maintenance of the facilities,
				  including water treatment plant equipment, distribution system equipment, and
				  piping. As the complexity of the waterworks increases, so does the expertise
				  and skill required of the operating staff.
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-460

Current through Register Vol. 40, No. 24, July 15, 2024
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-461 - Classification of waterworks, operator requirements, and operator attendance

Current through Register Vol. 40, No. 24, July 15, 2024
A. Classification
				of waterworks. All community and NTNC waterworks, including consecutive
				waterworks, fitting the classification protocol in this subsection shall be
				designated as classified waterworks. The department retains the discretion to
				assign the classification of the waterworks or treatment facility either higher
				or lower. Those community and NTNC waterworks failing to fall within one of the
				classifications listed in this subsection shall be designated an unclassified
				waterworks unless specified otherwise by the department. Normally, a TNC
				waterworks shall not be classified and shall not be required to have an
				operator unless the department determines that it is necessary to ensure
				satisfactory operation of the installed treatment. If a waterworks consists of
				multiple treatment facilities, then these facilities may be individually
				classified for the purpose of determining the operator requirements.
1. Class 1 means:
a. A waterworks or a water treatment plant
				serving 50,000 or more persons, or having a water treatment plant capacity of
				5.0 MGD or more and employing conventional filtration or chemical coagulation
				in combination with membrane filtration; or
b. A waterworks designated by the department
				to be a Class 1 waterworks.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-470 - Waterworks condition

Current through Register Vol. 40, No. 24, July 15, 2024
The waterworks shall be maintained in a clean and orderly
				  condition.
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-475 - Removal of wells from service

Current through Register Vol. 40, No. 24, July 15, 2024
A. Temporary inactivation.
1. A water well temporarily inactivated shall
				be sealed with a watertight cap or wellhead seal.
2. The well shall be maintained so that it
				will not be a source or channel for contamination during temporary
				inactivation.
3. The wellhead shall
				be visually inspected and observations documented to verify adequate sanitary
				integrity on a quarterly basis.
4.
				The well lot shall be maintained.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-476 - Reactivation of wells

Current through Register Vol. 40, No. 24, July 15, 2024
A. The
				owner shall notify the department of the intent to reactivate a well.
B. Before bringing the well into service, the
				well shall be pumped to waste (purged) for a minimum of five well volumes but
				for not less than 30 minutes. The purged well water shall be discharged in a
				manner so that it will not return to the well, directly or indirectly, during
				the pumping period.
C. After the
				well is pumped, water quality samples shall be collected. If the well has been
				inactive for less than one year, then two samples shall be collected at least
				30 minutes apart and tested for the presence of E. coli. If the well has been
				inactive for one or more years, then it shall be tested for total coliform
				density (MPN), nitrate, and, if determined by the department, inorganics, VOCs,
				SOCs, and radionuclides. Satisfactory test results shall be obtained before
				placing the well in service.
D. A
				well yield and drawdown test may be required by the department before bringing
				the well into service. The test shall be performed in accordance with
				12VAC5-590-840
				H, as applicable.
E. A well may be
				activated for emergency use before receipt of satisfactory monitoring results,
				even if public health and safety are unknowns and may be at risk, as determined
				by the department. However, in these circumstances, a special water advisory
				shall be approved by the department and issued by the waterworks at the same
				time the well is activated.
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-480 - Operational control testing and monitoring

Current through Register Vol. 40, No. 24, July 15, 2024
A. Water analyses and tests performed at
				waterworks are conducted for four main purposes:
(i) to ensure compliance;
(ii) to control water treatment plant
				operation;
(iii) to record water
				treatment plant performance; and
(iv) to provide information for improving
				water treatment plant performance. Tests designed to control operation shall
				present evidence that:
1. Each key process,
				such as mixing, coagulation, sedimentation, filtration, softening, iron and
				manganese removal, disinfection, and taste and odor control, is effective;
				and
2. The finished product is
				clean, is free from objectionable taste and odor, is free from undesirable
				chemical characteristics, and is safe for human consumption.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-490 - Adequate treatment

Current through Register Vol. 40, No. 24, July 15, 2024
A. Adequate
				treatment is any one or any combination of the controlled processes of
				coagulation, sedimentation, absorption, filtration, disinfection, or other
				processes that produce water consistently meeting the requirements of this
				chapter. The concept of adequate treatment also includes processes that are
				appropriate to (i) the source water; (ii) waterworks that are of adequate
				capacity to meet maximum demands without creating health hazards and that are
				located, designed, and constructed to eliminate or prevent cross-connections;
				and (iii) the conscientious operation by well-trained and competent personnel
				whose qualifications are commensurate with the responsibilities of the position
				and acceptable to the department.
B. A waterworks shall provide adequate
				treatment when required and in accordance with
				12VAC5-590-680
				to ensure the production of potable water.
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-500 - Disinfection criteria, determination of CT, disinfection profiles, and disinfection benchmarks for Giardia and virus inactivation

Current through Register Vol. 40, No. 24, July 15, 2024
A. A waterworks utilizing surface water
				sources or GUDI sources, in whole or in part, shall be disinfected in
				accordance with subsection C of this section and
				12VAC5-590-1000.
B. The owner of a groundwater system subject
				to the requirements of
				12VAC5-590-421
				A 1 d shall provide primary disinfection treatment by means of one of the
				following:
1. A residual disinfectant
				concentration (C) and contact time (T) to achieve a 4-log removal or
				inactivation of viruses. CT shall be calculated in accordance with subsections
				C and D of this section, which contain information on calculation methods and
				contact tank baffling factors.
2.
				UV treatment to achieve a 4-log removal or inactivation of viruses. Log
				inactivation shall be determined in accordance with 12VAC5-590-401 E 7 c. A
				secondary disinfection residual in the distribution system may be required by
				the department.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-505 - Emergency management plan for extended power outages

Current through Register Vol. 40, No. 24, July 15, 2024
A. The owner of a community waterworks
				(including consecutive waterworks) shall develop and maintain an emergency
				management plan for extended power outages.
B. The plan shall be kept current and shall
				be retained at a location that is readily accessible to the owner in the event
				of an extended power outage.
C. The
				owner of a community waterworks shall certify in writing to the department that
				the plan has been completed.
D. The
				plan shall address the following where applicable:
1. Identification of the criteria (events,
				duration of power outage, etc.) that will initiate activation of the
				plan.
2. How the owner will respond
				to an extended power outage lasting a minimum of five days.
3. Procedures for obtaining and distributing
				potable water in the event that the primary sources become
				unavailable.
4. Notification
				procedures and example notices to the public and media (local radio stations,
				television stations, local newspapers, etc.) including conservation notices and
				boil water advisories.
5. Emergency
				disinfection procedures for the distribution system and storage tank.
6. The point of contact for the
				department.
7. The points of
				contact for the waterworks personnel who should be notified.
8. The point of contact for the Local
				Emergency Coordinator designated by the Virginia Department of Emergency
				Management.
9. The points of
				contact for the electric power, natural gas, and propane distributors, or other
				energy supplier to the waterworks.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-510 - Acceptable operating practices

Current through Register Vol. 40, No. 24, July 15, 2024
A.
				This section is not intended to be all inclusive but reflects the concern for
				the public health significance of certain practices related to waterworks
				operation.
B. Filter operation.
1. Gravity flow granular media filters
				designed for pathogen and turbidity removal shall not be operated without
				adequate chemical coagulation as determined by the department.
2. A waterworks utilizing gravity flow
				granular media filtration shall not vary the rate of filtration through any
				single filter above its design capacity unless approved by the
				department.
3. Gravity flow
				granular media filters equipped with filter-to-waste facilities shall not be
				returned to service after backwashing until a thorough rinsing period has
				occurred so that the filter-to-waste water has a turbidity less than or equal
				to 0.3 NTU.
4. All MF and UF
				technologies employed for pathogen removal shall demonstrate removal efficiency
				equal to the removal (log inactivation) credit given in Table 500.1. A direct
				integrity test acceptable to the department shall be conducted and include the
				following:
a. The direct integrity test
				capability shall be provided for each filter unit; and
b. The direct integrity test shall be
				conducted at least daily for each day the filtration unit is in
				operation.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-515 - Use of chemicals

Current through Register Vol. 40, No. 24, July 15, 2024
A. All
				chemicals used in water treatment shall be compliant with NSF/ANSI/CAN Standard
				60-2020. These chemicals shall include the following:
1. Corrosion and scale inhibitors;
2. Coagulants and flocculants;
3. Disinfectants and oxidants;
4. pH adjustment chemicals;
5. Regenerating agents; and
6. Membrane cleaning compounds.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-520 - Waterworks capacity

Current through Register Vol. 40, No. 24, July 15, 2024
A. When the
				water production of a community waterworks reaches 80% of the permitted
				capacity for any consecutive three-month period, the owner shall prepare and
				submit a written plan within 30 days of notification by the department to
				address capacity needs. This plan shall be evaluated by the department and
				corrective actions shall be approved by the department.
B. The department may require the owner to
				reevaluate the source water capacity of a well by conducting a yield and
				drawdown test in accordance with
				12VAC5-590-840
				H when the well has demonstrated declining yield.
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-530 - Reporting

Current through Register Vol. 40, No. 24, July 15, 2024
A. The results of
				all required monitoring activity shall be reported by the owner or the owner's
				authorized agent to the department no later than (i) the 10th day of the month
				following the month during which the test results were received, or (ii) the
				10th day following the end of the monitoring period, whichever is shorter,
				unless stipulated otherwise by the department. The results of any required
				monitoring activity shall be reported by the owner or the owner's authorized
				agent in a format and method prescribed by the department. For routine
				compliance samples analyzed for contaminants listed in Tables 340.1 through
				340.7, the owner shall request that the certified analytical laboratory
				performing the analyses provide the data electronically to the department as
				per the requirements of this section.
B. It shall be the duty and responsibility of
				an owner to report to the department in the most expeditious manner for
				circumstances identified in subsections C through J of this section. The owner
				shall contact the department for the acceptable notification method. The
				official laboratory data report shall be sent to the department as soon as
				practical.
C. Bacteriological
				examination reporting.
1. When a
				bacteriological examination shows that samples are required (see
				12VAC5-590-380
				D), the owner shall collect the repeat samples within 24 hours of being
				notified of the positive result and shall report the repeat sample results to
				the department.
2. Microbial
				contamination, as evidenced by one or more routine distribution system water
				samples indicating the presence of E. coli or waterborne pathogens, shall be
				reported by the owner to the department by the end of the day when the owner
				was notified of the test result, unless the department is closed, in which case
				the department shall be notified before the end of the next business
				day.
3. An E. coli PMCL violation
				shall be reported by the owner to the department by the end of the day when the
				owner was notified of the test result, unless the department is closed, in
				which case the department shall be notified before the end of the next business
				day.
4. The owner who has failed to
				comply with the monitoring requirements of
				12VAC5-590-370
				shall report the monitoring violation to the department in writing within 10
				days after the owner discovers the violation and shall notify the public in
				accordance with
				12VAC5-590-540 A
				3.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-531 - Reporting requirements for filtration treatment and disinfection treatment

Current through Register Vol. 40, No. 24, July 15, 2024
A. The
				owner of a waterworks using a surface water source, a GUDI source, or both
				shall report monthly to the department the following specified information.
1. Turbidity measurements as required by
				12VAC5-590-376 B shall be reported within 10 days after the end of each month
				the waterworks serves water to the public. Information that shall be reported
				includes:
a. The total number of filtered
				water turbidity measurements collected during the month.
b. The number and percentage of filtered
				water turbidity measurements collected during the month that are less than or
				equal to the turbidity limits specified in 12VAC5-590-395 A 2 b for the
				filtration technology being used.
c. The owner of a waterworks that uses lime
				softening may apply to the department for alternative exceedance levels for the
				levels specified in subdivision A 1 b of this section if the owner can
				demonstrate that higher turbidity levels in individual filters are due to lime
				carryover only and not due to degraded filter performance.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-532 - Reporting requirements for lead and copper

Current through Register Vol. 40, No. 24, July 15, 2024
A. The owner shall report all of the
				information in this section to the department in accordance with this
				section.
B. Reporting requirements
				for tap water monitoring for lead and copper and for water quality parameter
				monitoring.
1. Except as provided in
				subdivision B 1 g of this section, the owner shall report the information
				specified in this subsection for all tap water samples specified in
				12VAC5-590-375
				B and for all water quality parameter samples specified in
				12VAC5-590-375
				C within the first 10 days following the end of each applicable monitoring
				period specified in
				12VAC5-590-375
				B and C (i.e., every six months, annually, every three years, or every nine
				years). For monitoring periods with a duration less than six months, the end of
				the monitoring period is the last date samples can be collected during the
				period as specified in
				12VAC5-590-375
				B and C.
a. The results of all tap samples for
				lead and copper including location or a location site code and the criteria
				under
				12VAC5-590-375
				B 1 c through B 1 f or
				12VAC5-590-375
				C under which the site was selected for the waterworks sampling pool.
b. Documentation for each tap water lead or
				copper sample for which the owner requests invalidation pursuant to
				12VAC5-590-375
				B 6.
c. The 90th percentile lead
				and copper concentrations measured from among all lead and copper tap water
				samples collected during each monitoring period (calculated in accordance with
				12VAC5-590-385
				C) unless the department calculates the 90th percentile lead and copper levels
				under subsection I of this section.
d. With the exception of initial tap sampling
				conducted pursuant to
				12VAC5-590-375
				B 4 a, the owner shall designate any site that was not sampled during previous
				monitoring periods and include an explanation of why sampling sites have
				changed.
e. The results of all tap
				samples for pH, and where applicable, alkalinity, calcium, conductivity,
				temperature, and orthophosphate or silica collected under
				12VAC5-590-375
				C 2 through C 5.
f. The results of
				all samples collected at the entry point to the distribution system for
				applicable water quality parameters under
				12VAC5-590-375
				C 2 through C 5.
g. The owner shall
				report the results of all water quality parameter samples collected under
				12VAC5-590-375
				C 3 through
				12VAC5-590-375
				C 6 during each six month monitoring period specified in
				12VAC5-590-375
				C 4 within the first 10 days following the end of the monitoring period unless
				the department has specified a more frequent reporting
				requirement.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-540 - Public notices

Current through Register Vol. 40, No. 24, July 15, 2024
A. The owner
				shall give public notice to (i) persons served by the waterworks and (ii) the
				owner of any consecutive waterworks to which it sells or otherwise provides
				water under the following circumstances.
1.
				Tier 1.
a. When E. coli are present in the
				distribution system, or when the waterworks fails to test for E. coli when any
				repeat sample tests positive for total coliform;
b. Violation of the PMCL for E.
				coli;
c. Violation of the PMCL for
				nitrate, nitrite, or total nitrate and nitrite;
d. Failure to collect a confirmation sample
				within 24 hours of the waterworks receipt of the first sample showing an
				exceedance of the nitrate or nitrite PMCL;
e. Exceedance of the nitrate PMCL by a
				noncommunity waterworks, where permitted to exceed the PMCL by the
				department;
f. Violation of the
				MRDL for chlorine dioxide when one or more samples collected in the
				distribution system the day following an exceedance of the MRDL at the entry
				point to the distribution system exceed the MRDL;
g. Failure to monitor chlorine dioxide
				residuals in the distribution system the day following an exceedance of the
				chlorine dioxide MRDL at the entrance to the distribution system;
h. Violation of the treatment technique
				requirements for filtration and disinfection resulting from a single exceedance
				of the maximum allowable turbidity limit, where the department determines after
				consultation that a Tier 1 notice is required;
i. Failure to consult with the department
				within 24 hours after the owner learns of the violation of the treatment
				technique requirements for filtration and disinfection resulting from a single
				exceedance of the maximum allowable turbidity limit;
j. Occurrence of a waterborne disease
				outbreak or other waterborne emergency (such as a failure or significant
				interruption in key water treatment processes, a natural disaster that disrupts
				the water supply or distribution system, or a chemical spill or unexpected
				loading of possible pathogens into the source water that significantly
				increases the potential for drinking water contamination);
k. Detection of E. coli in groundwater source
				samples; or
l. Other violations or
				situations with significant potential to have serious adverse effects on human
				health as a result of short-term exposure, as determined by the commissioner or
				department on a case-by-case basis.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-545 - Consumer confidence reports

Current through Register Vol. 40, No. 24, July 15, 2024
A.
				Purpose and applicability.
1. The owner of a
				community waterworks shall deliver to the owner's customers an annual report
				that contains information on the quality of the water delivered by the
				waterworks and characterizes the risks, if any, from exposure to contaminants
				detected in the drinking water.
2.
				For the purpose of this section, customers are defined as billing units or
				service connections to which water is delivered by a community
				waterworks.
3. For the purpose of
				this section, a contaminant is detected when the laboratory reports the
				contaminant level as a measured level and not as "non-detect," "not detected,"
				"ND," or less than a certain level. These express that an analyte in a test
				sample cannot be reliably detected with the test equipment or laboratory
				instrumentation and the method used.
Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-560 - Safety

Current through Register Vol. 40, No. 24, July 15, 2024
The owner of a waterworks shall institute a safety program
				  to inform personnel of the known hazards, preventive measures, and emergency
				  procedures pertaining to the operation of the waterworks in accordance with
				  VOSH laws and regulations.
Statutory Authority: §§
											32.1-12
					 and
					 32.1-170 of the Code
					 of Virginia.