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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Your Y-Valve and how it works

This is a graphic explaining a Y-Valve and how it works

https://ecology.wa.gov/justine-asohmbom

Floodplain by Design Preproposal 2019-2021

Preproposal application 2019-2021

https://ecology.wa.gov/floodplain-by-design-pre-proposal

Y-Valve Education Pilot Program Sample Newsletter Template

This is a Newsletter Template for the Y-Valve Education Pilot Program

https://ecology.wa.gov/sample-newsletter-template

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

SamplePumpOutCampaignSocialMediaPosts

This is a word document that contains sample posts for social media Pump Out, Don't Dump Out campaign

https://ecology.wa.gov/samplesocialmediaposts

Vessel Sewage System Maintenance Tips

This is an infographics that shows tips on how to properly maintain your boat sewage system

https://ecology.wa.gov/vessel-sewage-system-maintenance-tips

Water Quality funded stormwater activity project Recipient Closeout Report form

Required form for Water Quality funded stormwater facility projects in completing their Recipient Closeout Report

https://ecology.wa.gov/stormwater-activity-project-recipient-closeout-rep

Guidance for the 2-page Summary Report form for all Water Quality funded Activity-type Stormwater projects

The guidance for the required 2-page Summary Report form for all Water Quality funded Activity-type Stormwater projects

https://ecology.wa.gov/stormwater-activity-projects-2-page-summary-guidan

2-page Summary Report form for all Water Quality funded Activity-type Stormwater projects

Required 2-page Summary Report form for all Water Quality funded Activity-type Stormwater projects

https://ecology.wa.gov/stormwater-activity-projects-2-page-summary-templa

Water Quality funded stormwater facility project Recipient Closeout Report form

Required form for Water Quality funded stormwater facility projects in completing their Recipient Closeout Report

https://ecology.wa.gov/stormwater-facility-project-recipient-closeout-rep

Guidance for the 2-page Summary Report form for all Water Quality funded Facility-type Stormwater projects

The guidance for the required 2-page Summary Report form for all Water Quality funded Facility-type Stormwater projects

https://ecology.wa.gov/stormwater-facility-projects-2-page-summary-guidan

2-page Summary Report form for all Water Quality funded Facility-type Stormwater projects

Required 2-page Summary Report form for all Water Quality funded Facility-type Stormwater projects

https://ecology.wa.gov/stormwater-facility-projects-2-page-summary-templa

Equivalent stormwater manuals for municipal stormwater permits

We provide information for municipal stormwater permittees about equivalent stormwater manuals for Phase I and both the Eastern and Western Washington Phase II municipal stormwater permits.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/stormwater-permittee-guidance-resources/stormwater-manuals/equivalent-stormwater-manuals-for-municipal-stormw

Puget Sound Energy Ferndale Generating Station

We regulate water and hazardous waste at the PSE Ferndale electricity cogeneration station.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/puget-sound-energy-ferndale-generating-station

WestRock, Tacoma

We regulate water, hazardous waste and cleanup at RockTenn's WestRock pulp and paper mill in Tacoma.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/westrock-tacoma

Tesoro Logistics Anacortes Facility

We regulate water and hazardous waste at the Tesoro Logistics operations in Anacortes.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/tesoro-logistics-anacortes

U.S. Oil Refinery

We regulate water and hazardous waste at the U.S. Oil and Refining Co. oil refinery in Tacoma.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/us-oil-refining

Matheson Tri-Gas, Anacortes

We regulate water and hazardous waste activities at the Linde hydrogen plant in Anacortes.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/matheson-anacortes

Puget Sound Nutrient General Permit

The opt-in Nutrient General Permit helps WWTPs reduce nutrient pollution in Puget Sound.

https://ecology.wa.gov/regulations-permits/permits-certifications/nutrient-permit

Frequently flooded areas: Critical Areas Ordinance

Frequently flooded areas are covered by Critical Areas Ordinances promoting safety from floods.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-floodplains-critical-areas-ordinanc