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.

See more about this collection...

H5 Data Center Tier 2 Letter

This is the Tier 2 letter for H5 Data Center

https://ecology.wa.gov/20211110h5tier2ltr

H5 Data Center Technical Support Document

This is the Technical Support Document for H5 Data Center

https://ecology.wa.gov/2021h5tsd

H5 Data Centers notice of construction (NOC) application and supporting information

This is the air quality notice of construction application and supporting information for H5 Data Centers in Grant County, near Quincy.

https://ecology.wa.gov/20211110h5revnocapp

Overview of permitting & certifications

Find information on how to get a permit or certification from Ecology.

https://ecology.wa.gov/regulations-permits/permits-certifications/overview-of-permitting

Clean Water Act: Section 401 Water Quality Certifications

Under the Clean Water Act, we help make sure projects, actions, and activities don't harm state waters.

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

Air quality permits

Permits for industrial air pollution and burning activities.

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

Aquatic pesticide permits

Find information about the various aquatic pesticide permits used in our state.

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

Certified water right examiner certification

We share information to help you gain or maintain your certified water right examiner certification.

https://ecology.wa.gov/regulations-permits/permits-certifications/certified-water-right-examiner

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

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

Certification for incinerator & landfill operators

How to get certified to operate and inspect solid waste incinerator and landfill facilities.

https://ecology.wa.gov/regulations-permits/permits-certifications/certification-for-incinerator-landfill-operator

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

Cruise ships in Washington waters

Formal agreement with cruise ship companies helps prevent pollution and protect marine waters.

https://ecology.wa.gov/regulations-permits/permits-certifications/cruise-ship-memorandum-of-agreement-mou

Dam permits

Construction or reservoir permits may be required for your project.

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

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

Hanford dangerous waste & mixed waste permits

Permits direct cleanup to protect people and the environment from dangerous waste at Hanford.

https://ecology.wa.gov/regulations-permits/permits-certifications/hanford-federal-facility-permits

Training and certification for facilities

Well-trained facility staff are critical for an effective spill prevention program.

https://ecology.wa.gov/regulations-permits/permits-certifications/facilities-training-certification

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

Industrial facility permits and regulation

We regulate air, water, and waste for most of the large industrial facilities in Washington.

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

Puget Sound Nutrient General Permit

We have issued the first Nutrient General Permit for WWTPs that discharge to Puget Sound.

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