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 Adoption Notice (WAC 173-186) 12/12/2019

Rulemaking Adoption Notice (CR-103) for WAC 173-186, Oil Spill Contingency Plan - Railroad.

https://ecology.wa.gov/rulemaking-adoption-wac-173-186-holder

Rulemaking adopted repeal language (WAC 173-04) 06/25/2021

This is adopted repeal rule language for WAC 173-04, Practice and Procedure

https://ecology.wa.gov/rulemaking-adopted-repeal-language-wac-173-04-06

Rulemaking Adoption Notice (WAC 173-201A) 03/22/22

This is a rulemaking adoption (CR-103) for WAC 173-201A Water Quality Standards

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-201a-03-22-22

Rulemaking Emergency Adoption Notice (WAC 173-167) 07/28/2021

This is an emergency rulemaking adoption (CR-103E) for WAC 173-167 Emergency Drought Funding.

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-167-07-28-202

Rulemaking Adoption Notice (WAC 173-201A) 9/17/21

This is a rulemaking adoption (CR-103) for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-201a-9-17-21

Rulemaking adopted repeal language strikeout version (WAC 173-04) 06/25/2021

Rulemaking adopted repeal language strikeout (WAC 173-04) 06/25/2021

https://ecology.wa.gov/rulemaking-adopted-repeal-language-strikeout-wac

Rulemaking Adoption Notice (WAC 173-224) 06/22/21

This is a rulemaking adoption (CR-103) for WAC 173-224 Water Quality Permit Fees

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-224-06-01-21

Rulemaking Adoption (WAC 173-182) 12/18/19

This is a rulemaking adoption (CR-103) for WAC 173-182, Oil Spill Contingency Plan

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-182-dec

Rulemaking Adoption Notice (WAC 173-201A) 12/30/19

This is a rulemaking adoption (CR-103) for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-201a-12-30-19

Rulemaking Adoption Notice (WAC 173-180; WAC 173-184) 06/06/23

This is a rulemaking adoption (CR-103) for WAC 173-180 Facility Oil Handling Standards and WAC 173-184 Vessel Oil Transfer Advance Notice and Containment Requirements

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-180;-wac-173-18

Rulemaking Adoption Notice (WAC 173-166) 04/11/2018)

This is a rulemaking adoption (CR-103) for WAC 173-166 Emergency Drought Relief

https://ecology.wa.gov/rulemaking-order-wac-173-166-04-11-2018

Rulemaking Adoption Notice (WAC 173-185) 02/02/21

This is a rulemaking adoption (CR-103) for WAC 173-185 Oil Movement by Rail and Pipeline Notification

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-185-02-02-21

Rulemaking Adoption Notice (WAC 173-230) 07/10/19

This is a rulemaking adoption (CR-103) for WAC 173-230 Certification of Wastewater Operators

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-230-07-10-19

Rulemaking Adoption Notice (WAC 173-219) 01/23/18

This is a rulemaking adoption (CR-103) for WAC 173-219 Reclaimed Water

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-219-01-23-18

Rulemaking Adoption Notice (WAC 173-201A) 12/18/23

This is a rulemaking adoption (CR-103) for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-201a-12-18-23

Rulemaking Adoption Notice (WAC 173-187) 6/14/24

This is a rulemaking adoption (CR-103) for WAC 173-187 Financial Responsibility

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-187-6-14-24

Rulemaking Adoption Notice (WAC 173-201A) 08/14/24

This is a rulemaking adoption (CR-103) for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-201a-08-14-24

Rulemaking Adoption Notice (WAC 173-201A) 11/14/24

This is a rulemaking adoption (CR-103) for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-201a-11-14-24

Rulemaking Adoption Notice (WAC 173-201A) 11/27/24

This is a rulemaking adoption (CR-103) for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-201a-2024

Rulemaking Adoption Notice (WAC 173-167) 12/11/24

This is the rulemaking adoption notice (CR-103) for Chapter 173-167 WAC (AO 24-04)

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-167-12-11-24