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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WAC 173-55: Accreditation of Cannabis Laboratories

This is the rulemaking page for Chapter 173-55 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-55

WAC 173-50: Accreditation of Environmental Laboratories

This is the rulemaking page for Chapter 173-50 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-50

Construction Stormwater General Permit

Construction that disturbs land and discharges stormwater may need a construction stormwater permit.

https://ecology.wa.gov/regulations-permits/permits-certifications/stormwater-general-permits/construction-stormwater-permit

Beneficial use determinations

Learn about beneficial use determinations — exemptions from solid waste permitting requirements.

https://ecology.wa.gov/regulations-permits/permits-certifications/solid-waste-permits/beneficial-use-determinations

Aquatic & Invasive Species Control general permit

We have issued a combined state agency general permit.

https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/aquatic-invasive-species-control-general-permit

Certification information

We certify wastewater treatment plant operators to ensure that Washington’s waters are protected.

https://ecology.wa.gov/regulations-permits/permits-certifications/wastewater-operator-certification/certification-information

Industrial Stormwater General Permit

Find information and helpful resources about the Industrial Stormwater General Permit.

https://ecology.wa.gov/regulations-permits/permits-certifications/stormwater-general-permits/industrial-stormwater-permit

Stormwater Action Monitoring

Western Washington stormwater permittees cooperatively monitor permit effectiveness through SAM.

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

Municipal stormwater general permits

This permit covers urban areas that collect stormwater runoff in public storm sewer systems.

https://ecology.wa.gov/regulations-permits/permits-certifications/stormwater-general-permits/municipal-stormwater-general-permits

Sand & Gravel General Permit history

Find historical information about our Sand and Gravel General Permit.

https://ecology.wa.gov/regulations-permits/permits-certifications/sand-gravel-general-permit/sand-gravel-general-permit-history

Professional growth and training

Wastewater operators must maintain & document professional growth training.

https://ecology.wa.gov/regulations-permits/permits-certifications/wastewater-operator-certification/training-professional-development

Aquatic Mosquito Control General Permit

This permit allows the use of insecticides to control mosquitoes.

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

401 Water Quality Certifications for federal facilities

EPA writes NPDES permits for federal facilities. We issue water quality certifications for permits.

https://ecology.wa.gov/regulations-permits/permits-certifications/401-water-quality-certification/certifications-for-npdes-federal-permits

General orders for air quality permits

A general order is a streamlined group permit for common commercial sources of air pollution.

https://ecology.wa.gov/regulations-permits/permits-certifications/air-quality-permits/air-quality-general-orders

Burn permits

Burn permits for agricultural, outdoor, or residential burning.

https://ecology.wa.gov/regulations-permits/permits-certifications/air-quality-permits/burn-permits

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

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

Notice of construction permit

Businesses must get a permit before installing or changing a source of air pollution.

https://ecology.wa.gov/regulations-permits/permits-certifications/air-quality-permits/notice-of-construction-permit

Prevention of Significant Deterioration (PSD) permit

Prevention of Significant Deterioration (PSD) permits for major sources of air pollution.

https://ecology.wa.gov/regulations-permits/permits-certifications/air-quality-permits/prevention-of-significant-deterioration-psd

Burrowing shrimp control (Imidacloprid)

We are denying a request to use imidacloprid on shellfish beds in Willapa Bay & Grays Harbor.

https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/burrowing-shrimp-control-imidacloprid