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.
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
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