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 173-201A) 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 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 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 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 173-230) 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 173-201A) 1/23/19

This is a rulemaking adoption (CR-103) for WAC 173-201A Recreational Use Critera

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-201a-1-23-19

Rulemaking Adoption Notice (WAC 173-201A) 08/01/16

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-08-01-16

ROADMAP summary

ROAD MAP (Regional Operations and Maintenance Program) includes Western Washington and Southwest Washington Permittees

https://ecology.wa.gov/revisedroadmapsummary

Rosemere vs. Ecology & Clark County - Pollution Control Hearings Board Ruling - Jan. 5, 2011

The Pollution Control Hearings Board (PCHB) issued a ruling on Jan. 5, 2011 that the Agreed Order #7273 entered in between Ecology and Clark County is unlawful.

https://ecology.wa.gov/rosemerevecy_clarkcopchbrulingjanuary52011

Rocky Mountain Compost Wattle letter.

A letter from Ecology stating this technology is equivalent to BMP C235..

https://ecology.wa.gov/rocky-mountain-compost-wattle

Rolanka BioDSiltTrap

the Rolanka BioDSiltTrap is functionally equivalent to BMP C235.

https://ecology.wa.gov/rolanka-biodsilttrap

RootSpace System for Stormwater Runoff Filtration

A letter from Ecology stating this technology is equivalent to a Bioretention Facility.

https://ecology.wa.gov/rootspace-system

Rubberform trackout mat

Letter about use of Rubberform Trackout Mat.

https://ecology.wa.gov/rubberform-trackout-mat

Aquatic Invasive Species Management General Permit Response to Comments

Response to Comments for the Aquatic Invasive Species Management General Permit.

https://ecology.wa.gov/rtc08082016

2018 Pretreatment Plan for RJ Seafoods

2018 pretreatment plans on control for commercial clam beds in Willapa Bay for RJ Seafoods.

https://ecology.wa.gov/rj-seafoods-2018-pretreatment-plan

Rulemaking Adoption Notice (WAC 173-224) 06/29/23

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

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-224-06-29-23

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 173-201A) 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