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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Chapter 173-201A WAC (Outstanding Resource Waters)

This is the rulemaking page for Chapter 173-201A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-201a-outstanding-resource-waters

Chapter 173-201A WAC (Salmon Spawning Habitat)

This is the rulemaking page for Chapter 173-201A WAC for salmon spawning habitat.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-201a-salmon-spawning-habitat

Chapter 173-224 WAC-Water Quality Permit Fees

This is the rulemaking page for chapter 173-224 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-224

Hydrologic performance of bioretention

Study of the oldest bioretention facilities to evaluate infiltration performance.

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/bioretention-infiltration

Chapter 173-201A WAC (Human Health Criteria)

This is the rulemaking page for Chapter 173-201A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-201a-hhc

Aquatic invasive plant technical assistance

We provide advice on identifying, monitoring, and managing invasive freshwater aquatic plants.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/aquatic-invasive-plant-technical-assistance

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

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

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