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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2011 MTCATPH Excel Spreadsheet's Troubleshooting Guide

Troubleshooting guide with operating tips for common installation problems associated with compatibility with MS EXCEL 2000, 2003, 2007, 2010 versions.

https://ecology.wa.gov/2011mtcatphtroubleshooting

Carnival Splendor inspection report

This document is the wastewater inspection report for Carnival Splendor Cruise Line.

https://ecology.wa.gov/carnival-splendor-inspection-report

Car maintance fact sheet WQ

Washington Waters Ours to Protect car maintenance fact sheet WQ

https://ecology.wa.gov/car-maintenance-fact-sheet-wq

Car washing fact sheet English

Washington Waters Ours to Protect car washing fact sheet English

https://ecology.wa.gov/car-washing-fact-sheet-english

Car washing fact sheet Spanish

Washington Waters Ours to Protect car washing fact sheet Spanish

https://ecology.wa.gov/car-washing-fact-sheet-spanish

Car maintenance poster WQ

Washington Waters Ours to Protect car maintenance poster

https://ecology.wa.gov/car-maintenance-poster-wq

Car washing poster Spanish

Washington Waters Ours to Protect car washing poster Spanish

https://ecology.wa.gov/car-washing-poster-spanish

Municipal stormwater permit compliance assurance program

We use a proactive approach to ensuring the permits are implemented and effective.

https://ecology.wa.gov/regulations-permits/compliance-enforcement/municipal-stormwater-compliance-assurance-program

For operators: Biosolids fees, forms, & annual reports

Help for operators and managers with permits, annual reports, and fees.

https://ecology.wa.gov/regulations-permits/permits-certifications/biosolids-facilities-fees-forms-annual-report

Stormwater monitoring

Stormwater monitoring helps us know how well water quality permits are working.

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring

Cannabis licensing and the environment

Environmental permits may be required for cannabis growers and processors.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-cannabis-businesses

Pacific Coast Coal Company

We permit the water quality discharge at the Pacific Coast Coal Company for the John Henry Mine.

https://ecology.wa.gov/regulations-permits/permits-certifications/pccc

Upland Finfish Hatching & Rearing General Permit

This water quality permit covers certain hatcheries that raise finfish species.

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

Aquatic Noxious Weed Control General Permit

We issue this general permit to manage freshwater and marine noxious weeds in Washington.

https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/aquatic-noxious-weed-control

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

Alcoa Wenatchee

We regulate the water and hazardous waste at Alcoa's Wenatchee aluminum smelter in Malaga.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/alcoa-wenatchee

Hasa, Longview

We regulate water and hazardous waste activities at the Hasa bleach repackaging plant in Longview.

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

Aquatic Plant & Algae Management General Permit

This permit covers the in-water and shoreline management of plants, algae, and phosphorus.

https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/aquatic-plant-algae-management

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