Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

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Rulemaking proposed language (WAC 173-337) 12/07/22

This is proposed rule language for WAC 173-337 Safer Products Restrictions and Reporting

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-337-12-07-22

Rulemaking Proposed Language (WAC 173-228) 10/04/17

This is proposed rule language for WAC 173-228 Sewage No Discharge Zones

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-228-10-04-1

Rulemaking proposed language (WAC 173-201A) 3/24/21

This is the proposed rule language for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-201a-3-24-2

Rulemaking proposed language (WAC 173-400) 06/22/21

This is the proposed rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-400-06-22-2

Rulemaking proposed language (WAC 173-201A) 10/18/21

This is proposed rule language for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-201a-10-18-21

Rulemaking proposed language (WAC 173-224) 03/16/21

This is proposed rule language for (WAC 173-224) Water Quality Permit Fee

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-224-03-16-2

Rulemaking proposed language (WAC 173-350) 1/23/18

This is proposed rule language for WAC 173-350 Solid Waste Handling Standards.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-350-1-23-18

Rulemaking proposed language (WAC 173-323) 10/3/17

This is proposed rule language for WAC 173-323 Grants and Loans

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-323-10-3-17

Rulemaking proposed language (WAC 173-340) 02/15/23

This is proposed rule language for WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-340-02-15-23

Rulemaking proposed language (WAC 173-407) 10/04/17

This is proposed rule language for WAC 173-407 Carbon Dioxide Mitigation Program, Greenhouse Gases Emissions Performance Standard and Sequestration Plans and Programs for Thermal Electric Generating Facilities

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-407-2017100

Rulemaking proposed language (WAC 173-400) 09-07-22

This is proposed rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-400-09-07-22

Rulemaking proposed language (WAC 173-405) 11/07/18

This is the proposed rule language for WAC 173-405, Kraft Pulping Mills.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-405-11-07-1

Rulemaking proposed language (WAC 173-219) Aug. 23, 2017

This is proposed rule language for WAC 173-219 Reclaimed Water

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-219-08-23-1

Rulemaking proposed language (WAC 173-400) 06/20/18

This is the proposed rule language for WAC 173-400, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-400-06-20-1

ulemaking proposed language (WAC 173-201A) 5/10/24

This is proposed rule language for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-201a-5-10-24

Rulemaking proposed language (WAC 173-400) 9-18-24

This is the proposed rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-400-9-18-24

Rulemaking proposed language (WAC 173-401) 9-18-24

This is the proposed rule language for Chapter 173-401 WAC, Operating Permit Regulation.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-401-9-18-24

Rulemaking proposed language (WAC 173-400, sections 025, 040, 050, 060, 105)

This is the proposed rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-400-sections-025-040-050-060-105-9-18-24

Rulemaking proposed language (WAC 173-401, sections 200-920 & 940)

This is the proposed rule language for Chapter 173-401 WAC, General Regulations for Air Pollution Sources

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-401-sections-200-920-940-9-18-24

Rulemaking proposed language (WAC 173-339)

This is the proposed rule language for WAC 173-339.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-339-01-30-25