WAC 246-290-025. Adoption by reference

The following sections and subsections of Title 40 Code of Federal Regulations (C.F.R.) Part 141 National Primary Drinking Water Regulations and Part 143 National Secondary Drinking Water Regulations revised as of June 25, 2024, are adopted by reference:

141.2 Definitions. Only those definitions listed as follows: Action level; Corrosion inhibitor; Effective corrosion inhibitor residual; Enhanced coagulation; Enhanced softening; First draw sample; Haloacetic acids (five) (HAA5); Large water system; Lead service line; Maximum residual disinfectant level (MRDL); Maximum residual disinfectant level goal (MRDLG); Medium-size water system; Optimal corrosion control treatment; Single family structure; Small water system; Specific ultraviolet absorption (SUVA); and Total Organic Carbon (TOC). 141.13 Maximum contaminant levels for turbidity. 141.22 Turbidity sampling and analytical requirements. 141.23 (a) through (j) and (m) through (o), excluding (i)(2), (k), and (l) Inorganic chemical sampling and compliance. 141.24 (f)(1) through (15), (18), (19), (21), and (22) Volatile organic monitoring and compliance. 141.24(h), excluding (13), (18), and (19) Synthetic organic monitoring and compliance, except PFAS. 141.25 (a), (c), and (d) Analytical methods for radioactivity. 141.26 Monitoring frequency and compliance for radionuclides in community water systems. 141.31(d) Reporting requirements. 141.33(e) Record maintenance. 141.40 Monitoring requirements for unregulated contaminants. 141.61 Maximum contaminant levels for organic contaminants. 141.62, excluding (b) Maximum contaminant levels for inorganic contaminants. 141.63(e) Maximum contaminant levels (MCLs) for microbiological contaminants. 141.64 Maximum contaminant levels for disinfection byproducts. 141.65(c) Maximum Residual Disinfectant Levels. 141.66 Maximum contaminant levels for radionuclides. Control of Lead and Copper 141.80, excluding (c)(3)(v) General requirements

ants. 141.62, excluding (b) Maximum contaminant levels for inorganic contaminants. 141.63(e) Maximum contaminant levels (MCLs) for microbiological contaminants. 141.64 Maximum contaminant levels for disinfection byproducts. 141.65(c) Maximum Residual Disinfectant Levels. 141.66 Maximum contaminant levels for radionuclides. Control of Lead and Copper 141.80, excluding (c)(3)(v) General requirements. 141.81 Applicability of corrosion control treatment steps to small, medium-size and large water systems. 141.82 (a) through (h) Description of corrosion control treatment requirements. 141.83 Source water treatment requirements. 141.84 Lead service line replacement requirements. 141.85 Public education and supplemental monitoring requirements. 141.86 (a) through (f) Monitoring requirements for lead and copper in tap water. 141.87 Monitoring requirements for water quality parameters. 141.88 Monitoring requirements for lead and copper in source water. 141.89 Analytical methods. 141.90, excluding (a)(4) Reporting requirements. 141.91 Recordkeeping requirements. Disinfectants and Disinfection Byproducts (D/DBP) 141.130 General requirements. 141.131 Analytical requirements. 141.132, excluding (c)(1)(i) Monitoring requirements. 141.133 Compliance requirements. 141.134 Reporting and recordkeeping requirements. 141.135 Treatment technique for control of disinfection byproduct precursors. Subpart O - Consumer Confidence Reports 141.153 (h)(8)(ii) Contents of the reports. Enhanced Filtration and Disinfection - Systems Serving 10,000 or More People 141.175(b) Reporting and recordkeeping requirements. Subpart Q - Public Notification of Drinking Water Violations 141.201, excluding (3)(ii) of Table 1 General public notification requirements. 141.202, excluding (3) of Table 1 Tier 1 Public Notice - Form, manner, and frequency of notice. 141.203 Tier 2 Public Notice - Form, manner, and frequency of notice. 141.204 Tier 3 Public Notice - Form, manner, and frequency of notice. 141.205 Content of the public notice

ublic Notification of Drinking Water Violations 141.201, excluding (3)(ii) of Table 1 General public notification requirements. 141.202, excluding (3) of Table 1 Tier 1 Public Notice - Form, manner, and frequency of notice. 141.203 Tier 2 Public Notice - Form, manner, and frequency of notice. 141.204 Tier 3 Public Notice - Form, manner, and frequency of notice. 141.205 Content of the public notice. 141.206 Notice to new billing units or new customers. 141.207 Special notice of the availability of unregulated contaminant monitoring results. 141.208 Special notice for exceedances of the SMCL for fluoride. 141.211 Special notice for repeated failure to conduct monitoring of the source water for Cryptosporidium and for failure to determine bin classification or mean Cryptosporidium level. Appendix A to Subpart Q of Part 141 NPDWR violations and other situations requiring public notice. Appendix B to Subpart Q of Part 141 Standard health effects language for public notification. Appendix C to Subpart Q of Part 141 List of acronyms used in public notification regulation. 141.400 General requirements and applicability. 141.402(c) Groundwater source microbial monitoring and analytical methods. 141.403 (b)(3)(i) through (iii) Treatment technique requirements for groundwater systems. Subpart T - Enhanced Filtration and Disinfection - Systems Serving Fewer Than 10,000 People 141.530 through 141.544 Disinfection profile and benchmark. 141.563 What follow-up action is my system required to take based on continuous turbidity monitoring? 141.570, excluding (c) What does Subpart T require that my system report to the state? Subpart U - Initial Distribution System Evaluations 141.600 through 141.605 Initial distribution system evaluations. Subpart V - Stage 2 Disinfection Byproducts Requirements 141.620 through 141.629, excluding 141.624 Stage 2 Disinfection Byproducts Requirements. Subpart W - Enhanced Treatment for Cryptosporidium 141.700 through 141.722 Enhanced Treatment for Cryptosporidium

em report to the state? Subpart U - Initial Distribution System Evaluations 141.600 through 141.605 Initial distribution system evaluations. Subpart V - Stage 2 Disinfection Byproducts Requirements 141.620 through 141.629, excluding 141.624 Stage 2 Disinfection Byproducts Requirements. Subpart W - Enhanced Treatment for Cryptosporidium 141.700 through 141.722 Enhanced Treatment for Cryptosporidium. Subpart Y - Revised Total Coliform Rule 141.852 Analytical methods and laboratory certification. 141.860 (c) and (d) Violations. Subpart Z - Control of Per- and Polyfluoroalkyl Substances (PFAS) 141.904 Reporting and recordkeeping requirements. 141.905 Violations. Part 143 - National Secondary Drinking Water Regulations 143.1 Purpose. 143.2 Definitions. 143.3 Secondary maximum contaminant levels. 143.4 Monitoring.

141.2

Definitions. Only those definitions listed as follows:

Action level;

Corrosion inhibitor;

Effective corrosion inhibitor residual;

Enhanced coagulation;

Enhanced softening;

First draw sample;

Haloacetic acids (five) (HAA5);

Large water system;

Lead service line;

Maximum residual disinfectant level (MRDL);

Maximum residual disinfectant level goal (MRDLG);

Medium-size water system;

Optimal corrosion control treatment;

Single family structure;

Small water system;

Specific ultraviolet absorption (SUVA); and

Total Organic Carbon (TOC).

141.13

Maximum contaminant levels for turbidity.

141.22

Turbidity sampling and analytical requirements.

141.23 (a) through (j) and (m) through (o), excluding (i)(2), (k), and (l)

Inorganic chemical sampling and compliance.

141.24 (f)(1) through (15), (18), (19), (21), and (22)

Volatile organic monitoring and compliance.

141.24(h), excluding (13), (18), and (19)

Synthetic organic monitoring and compliance, except PFAS.

141.25 (a), (c), and (d)

Analytical methods for radioactivity.

141.26

Monitoring frequency and compliance for radionuclides in community water systems.

141.31(d)

Reporting requirements.

141.33(e)

Record maintenance

through (15), (18), (19), (21), and (22)

Volatile organic monitoring and compliance.

141.24(h), excluding (13), (18), and (19)

Synthetic organic monitoring and compliance, except PFAS.

141.25 (a), (c), and (d)

Analytical methods for radioactivity.

141.26

Monitoring frequency and compliance for radionuclides in community water systems.

141.31(d)

Reporting requirements.

141.33(e)

Record maintenance.

141.40

Monitoring requirements for unregulated contaminants.

141.61

Maximum contaminant levels for organic contaminants.

141.62, excluding (b)

Maximum contaminant levels for inorganic contaminants.

141.63(e)

Maximum contaminant levels (MCLs) for microbiological contaminants.

141.64

Maximum contaminant levels for disinfection byproducts.

141.65(c)

Maximum Residual Disinfectant Levels.

141.66

Maximum contaminant levels for radionuclides.

Control of Lead and Copper

141.80, excluding (c)(3)(v)

General requirements.

141.81

Applicability of corrosion control treatment steps to small, medium-size and large water systems.

141.82 (a) through (h)

Description of corrosion control treatment requirements.

141.83

Source water treatment requirements.

141.84

Lead service line replacement requirements.

141.85

Public education and supplemental monitoring requirements.

141.86 (a) through (f)

Monitoring requirements for lead and copper in tap water.

141.87

Monitoring requirements for water quality parameters.

141.88

Monitoring requirements for lead and copper in source water.

141.89

Analytical methods.

141.90, excluding (a)(4)

Reporting requirements.

141.91

Recordkeeping requirements.

Disinfectants and Disinfection Byproducts (D/DBP)

141.130

General requirements.

141.131

Analytical requirements.

141.132, excluding (c)(1)(i)

Monitoring requirements.

141.133

Compliance requirements.

141.134

Reporting and recordkeeping requirements.

141.135

Treatment technique for control of disinfection byproduct precursors.

Subpart O - Consumer Confidence Reports

141.153 (h)(8)(ii)

Contents of the reports

nts and Disinfection Byproducts (D/DBP)

141.130

General requirements.

141.131

Analytical requirements.

141.132, excluding (c)(1)(i)

Monitoring requirements.

141.133

Compliance requirements.

141.134

Reporting and recordkeeping requirements.

141.135

Treatment technique for control of disinfection byproduct precursors.

Subpart O - Consumer Confidence Reports

141.153 (h)(8)(ii)

Contents of the reports.

Enhanced Filtration and Disinfection - Systems Serving 10,000 or More People

141.175(b)

Reporting and recordkeeping requirements.

Subpart Q - Public Notification of Drinking Water Violations

141.201, excluding (3)(ii) of Table 1

General public notification requirements.

141.202, excluding (3) of Table 1

Tier 1 Public Notice - Form, manner, and frequency of notice.

141.203

Tier 2 Public Notice - Form, manner, and frequency of notice.

141.204

Tier 3 Public Notice - Form, manner, and frequency of notice.

141.205

Content of the public notice.

141.206

Notice to new billing units or new customers.

141.207

Special notice of the availability of unregulated contaminant monitoring results.

141.208

Special notice for exceedances of the SMCL for fluoride.

141.211

Special notice for repeated failure to conduct monitoring of the source water for Cryptosporidium and for failure to determine bin classification or mean Cryptosporidium level.

Appendix A to Subpart Q of Part 141

NPDWR violations and other situations requiring public notice.

Appendix B to Subpart Q of Part 141

Standard health effects language for public notification.

Appendix C to Subpart Q of Part 141

List of acronyms used in public notification regulation.

141.400

General requirements and applicability.

141.402(c)

Groundwater source microbial monitoring and analytical methods.

141.403 (b)(3)(i) through (iii)

Treatment technique requirements for groundwater systems.

Subpart T - Enhanced Filtration and Disinfection - Systems Serving Fewer Than 10,000 People

141.530 through 141.544

Disinfection profile and benchmark

d in public notification regulation.

141.400

General requirements and applicability.

141.402(c)

Groundwater source microbial monitoring and analytical methods.

141.403 (b)(3)(i) through (iii)

Treatment technique requirements for groundwater systems.

Subpart T - Enhanced Filtration and Disinfection - Systems Serving Fewer Than 10,000 People

141.530 through 141.544

Disinfection profile and benchmark.

141.563

What follow-up action is my system required to take based on continuous turbidity monitoring?

141.570, excluding (c)

What does Subpart T require that my system report to the state?

Subpart U - Initial Distribution System Evaluations

141.600 through 141.605

Initial distribution system evaluations.

Subpart V - Stage 2 Disinfection Byproducts Requirements

141.620 through 141.629, excluding 141.624

Stage 2 Disinfection Byproducts Requirements.

Subpart W - Enhanced Treatment for Cryptosporidium

141.700 through 141.722

Enhanced Treatment for Cryptosporidium.

Subpart Y - Revised Total Coliform Rule

141.852

Analytical methods and laboratory certification.

141.860 (c) and (d)

Violations.

Subpart Z - Control of Per- and Polyfluoroalkyl Substances (PFAS)

141.904

Reporting and recordkeeping requirements.

141.905

Violations.

Part 143 - National Secondary Drinking Water Regulations

143.1

Purpose.

143.2

Definitions.

143.3

Secondary maximum contaminant levels.

143.4

Monitoring.

Copies of the incorporated sections and subsections of Title 40 C.F.R. are available from the Department of Health online at: https://doh.wa.gov/Community-and-Environment/Drinking-Water/Regulation-and-Compliance/Rules , or P.O. Box 47822, Olympia, Washington 98504-7822, or by calling the department's drinking water hotline at 800-521-0323.