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 Announcement (WAC 173-224) 06/07/22

This is a rulemaking announcement (CR-101) for WAC 173-224 Water Quality Permit Fees..

https://ecology.wa.gov/rulemaking-announcement-wac-173-224-06-07-22

Rulemaking Announcement (WAC 173-186) 12/05/18

This is a rulemaking announcement (CR-101) for WAC 173-186 Oil spill contingency plan — railroad.

https://ecology.wa.gov/rulemaking-announcement-wac-173-186-12-05-18

Rulemaking Announcement (WAC 173-182) 01/02/19

This is a rulemaking announcement (CR-101) for WAC 173-182 Oil Spill Contingency Plan.

https://ecology.wa.gov/rulemaking-announcement-wac-173-182-01-02-19

Rulemaking Announcement (WAC 173-340) 12/20/18

This is a rulemaking announcement (CR-101) for WAC 173-340, Model Toxics Control Act - Cleanup

https://ecology.wa.gov/rulemaking-announcement-wac-173-340-12-20-18

Rulemaking proposal CR-102 (173-166 WAC) 01/02/2018

This is a rulemaking proposal (CR-102) for WAC 173-166 Emergency Drought Relief

https://ecology.wa.gov/rulemaking-proposal-173-166-wac-01-02-2018

Rulemaking proposed language (WAC 173-201A) 01/08/15

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-01-08

Rulemaking Proposal (WAC 173-50) 4/19/23

This is a rulemaking proposal (CR-102) for WAC 173- 50, Accreditation of Environmental Laboratories.

https://ecology.wa.gov/rulemaking-proposal-wac-173-50-4-19-23

Rulemaking Proposal (WAC 173-201A) 02/01/16

This is a rulemaking proposal (CR-102) for WAC 173-201A Water quality standards for surface waters of the state of Washington.

https://ecology.wa.gov/rulemaking-proposal-wac-173-201a-02-01-16

Rulemaking proposed language (WAC 173-166) 01/02/2018

This is proposed rule language for WAC 173-166 Emergency Drought Relief

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-166-01-02-2

Rulemaking Proposal (WAC 173-201A) 01/08/15

This is a rulemaking proposal (CR-102) for WAC 173-201A Water quality standards for surface waters of the state of Washington.

https://ecology.wa.gov/rulemaking-proposal-wac-173-201a-01-08-15

Rulemaking Announcment 12-03 (WAC 173-201A) 9/13/12

This is a rulemaking announcement (CR-101) for WAC 173-201A Water quality standards for surface waters of the state of Washington.

https://ecology.wa.gov/rulemaking-announcment-12-03-wac-173-201a-9-13-1

Rulemaking Announcement (WAC 173-230) 06/22/18

This is a rulemaking announcement (CR-101) for WAC 173-230

https://ecology.wa.gov/rulemaking-announcement-wac-173-230-06-22-18

Rulemaking Adoption Notice (WAC 173-557) 01/27/15

This is a rulemaking adoption (CR-103) for WAC 173-557 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-557-01-27-15

Rulemaking Announcement (WAC 173-557) 01/21/14

This is a rulemaking announcement (CR-101) for WAC 173-557 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/rulemaking-announcement-wac-173-557-01-21-14

Rulemaking proposal (WAC 173-230) 03/12/19

This is a rulemaking proposal (CR-102) for WAC 173-230 Wastewater Operator Certification

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-230-03-12-1

Rulemaking Announcement 11-08 (WAC 173-201A) 9/13/12

This is a rulemaking announcement (CR-101) for WAC 173-201A Water quality standards for surface waters of the state of Washington.

https://ecology.wa.gov/rulemaking-announcement-11-08-wac-173-201a-9-13

Rulemaking Announcement (WAC 173-455) 09-23-21

This is a rulemaking announcement (CR-101) for Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-455-09-23-21

Rulemaking Proposal (WAC 173-557) 09/17/14

This is a rulemaking proposal (CR-102) for WAC 173-557 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/rulemaking-proposal-wac-173-557-09-17-14

Rulemaking Announcement (WAC 173-201A) 10/25/11

This is a rulemaking announcement (CR-101) for WAC 173-201A Water quality standards for surface waters of the state of Washington.

https://ecology.wa.gov/wac173-201a_-16-07

Water Quality Fees Rulemaking Announcement

This is a rulemaking announcement (CR-101) for WAC 173-224 Water Quality Permit Fees..

https://ecology.wa.gov/rulemaking-announcement-wac-173-224-8-7-2024