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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Longevity of biological protection using bioretention

Study about the effectiveness of bioretention soil retaining pollution over time.

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/longevity-biological-protection-using-bioretention

Paired watershed retrofit & restoration study

Stormwater Action Monitoring effectiveness study: Paired watershed retrofit and restoration study.

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/paired-watershed-retrofit-and-restoration-study

Bioretention effectiveness for 6PPD and PFAS

Treatment Effectiveness of Stormwater Facility with HPBSM for Toxic Chemicals

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/bioretention-effectiveness-for-6ppd-and-pfas

Washington's biosolids permit system

Help for operators with permit applications, and those managing permit coverage, including modifications.

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

Boatyard General Permit

This permit protects marine waters from toxics that can get into stormwater runoff from boatyards.

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

Bridge & Ferry Terminal Washing Permit

This permit protects water from cleaning and painting activities at bridges and ferry terminals.

https://ecology.wa.gov/regulations-permits/permits-certifications/bridge-and-ferry-terminal-washing-permit

Certified Erosion & Sediment Control Lead

Find a Certified Erosion & Sediment Control Lead or learn how to become one.

https://ecology.wa.gov/regulations-permits/permits-certifications/certified-erosion-sediment-control

Concentrated Animal Feeding Operation General Permit

Permit for operations with large numbers of livestock for long periods of time.

https://ecology.wa.gov/regulations-permits/permits-certifications/concentrated-animal-feeding-operation

Combined sewer overflows

We're working to control combined sewer overflows to keep water clean.

https://ecology.wa.gov/regulations-permits/permits-certifications/combined-sewer-overflows

EPA Vessel General Permit

Find out about the EPA Vessel General Permit and tap into helpful resources.

https://ecology.wa.gov/regulations-permits/permits-certifications/epa-vessel-general-permit-graywater

Fresh Fruit Packing General Permit

Find out about the Fresh Fruit Packing General Permit and get helpful resources.

https://ecology.wa.gov/regulations-permits/permits-certifications/fresh-fruit-packing-general-permit

Environmental laboratory accreditation

Learn how we accredit environmental laboratories and where to find them.

https://ecology.wa.gov/regulations-permits/permits-certifications/laboratory-accreditation

Mineral prospecting and placer mining

Information from Ecology and WDFW about mineral prospecting and placer mining, and ESHB 1261.

https://ecology.wa.gov/regulations-permits/permits-certifications/mineral-prospecting-and-placer-mining

Sand & Gravel General Permit

This permit covers sand and gravel operations, rock quarries, and concrete and asphalt batch plants.

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

Stormwater general permits

We issue permits to protect lakes, rivers, and saltwater from polluted stormwater runoff.

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

Wastewater Operator Certification Program

We assure wastewater treatment plant operators are competent, trained, and certified.

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

Water Treatment Plant General Permit

We regulate drinking water facilities through the use of this permit.

https://ecology.wa.gov/regulations-permits/permits-certifications/water-treatment-plants

Winery general permit

The winery general permit helps prevent possible pollution problems from winery wastewater.

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

Low Impact Development (LID) guidance

Presentations, fact sheets, videos, reports, manuals, and other guidance for Low Impact Development

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/stormwater-permittee-guidance-resources/low-impact-development-guidance

Vessel Deconstruction General Permit

This permit defines requirements for pollution prevention while dismantling vessels.

https://ecology.wa.gov/regulations-permits/permits-certifications/vessel-deconstruction-general-permit