Rulemaking
Active Rulemaking
Consumer Confidence Reports Rulemaking
Group A Public Water Supplies - PFAS Exception Rulemaking
Group A Public Water Supplies - PFAS Rulemaking
Proposed Legislation
Public Water Systems – Proposed Legislation
Rules
View rules by clicking the links below, which allows you to search WACs and easily print individual sections. To print a copy of the rules, click on the link(s) below and select the “PDF.”
Group A Public Water Supplies: Chapter 246-290 WAC
- These rules set requirements for Group A public water systems.
- Title 40 Code of Federal Regulations (CFR) Part 141 National Primary Drinking Water Regulations and Part 143 National Secondary Drinking Water Regulations revised as of June 25, 2024 (PDF)
Group B Public Water Systems: Chapter 246-291 WAC
- These rules set requirements for Group B public water systems.
Waterworks Operator Certification: Chapter 246-292 WAC
- These rules set requirements for certified waterworks operators.
Water System Coordination Act: Chapter 246-293 WAC
- These rules set requirements to evaluate and determine critical water supply service areas and coordinate public water system planning.
Drinking Water Operating Permits: Chapter 246-294 WAC
- These rules set requirements for Group A public water systems required to have an annual drinking water operating permit.
Satellite System Management Agencies: Chapter 246-295 WAC
- These rules set requirements for entities seeking approval to operate more than one public water system.
Drinking Water State Revolving Fund Loan Program: Chapter 246-296 WAC
- These rules set requirements for public water systems seeking funding assistance for infrastructure improvements.
Drinking Water Laboratory Certification and Data Reporting: Chapter 246-390 WAC
- These rules set requirements for labs to send data results to public water systems and the department of health.
You can find our fee regulations in WAC 246-290-990.
- Group A and B public water systems, WAC 246-290-990.
- Waterworks Operator Certification, WAC 246-292-995.
- Drinking Water Operating Permits, WAC 246-294-070.