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.
Chapter 173-187 WAC
This is the rulemaking page for 173-187 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-187
Chapters 173-400 and 173-401 WAC, General Regulations for Air Pollution Sources
This is the rulemaking page for Chapters 173-400 and 173-401 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-400-401-air-pollution-sources
Chapter 173-446B WAC – Climate Commitment Act Funds Reporting
This is the rulemaking page for Chapter 173-446B WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-446b
Chapter 173-446 WAC – Cap-and-Invest Offsets
This is the rulemaking page for Chapter 173-446 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-446-offsets
Chapter 173-441 and 173-446 WAC, Cap-and-Invest Linkage
This is the rulemaking page for Chapters 173-441 and 173-446.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-441-446-linkage
Chapter 173-905 WAC - Battery Stewardship Program
This is the rulemaking page for Chapter 173-905 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-905
Chapter 173-201A WAC (Natural Conditions)
This is the rulemaking page for Chapter 173-201A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-201a-natural-conditions
Chapters 173-441 and 173-446 WAC – Electricity Markets
This is the rulemaking page for Chapter 173-441 WAC and Chapter 173-446 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-441-446
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
Chapter 173-445 WAC – Greenhouse Gas Assessment for Projects
This is the rulemaking page for Chapter 173-443 WAC, Greenhouse Gas Assessment for Projects.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-445
Chapter 173-925 WAC
This is the rulemaking page for Chapter 173-925 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-925
Biosolids laws, rules, and support documents
See Washington's biosolids laws, the administrative rules we operate under, and support documents.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/biosolids-laws-rules-and-support-documents
Rulemaking at Ecology
Find out about our rulemaking activities.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking
Noise pollution
Learn more about how to manage noise pollution.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/noise-pollution
Noise pollution — Frequently asked questions for residents
Do you have questions about noise pollution? Find some common questions and answers.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/noise-pollution/noise-pollution-faq-for-residents
Noise pollution — Frequently asked questions for local governments
Do you have questions about noise pollution? Find some common questions and answers for governments.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/noise-pollution/noise-pollution-faq-for-local-government
Frequently Asked Questions (FAQs) for Chapter 173-303
Frequently asked questions about Chapter 173-303 WAC, Dangerous Waste Regulations.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-303-faq
Exploratory rulemaking for Chapter 173-460 WAC – Controls for New Sources of Toxic Air Pollutants
This is the rulemaking page for Chap. 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-460-exploratory-rulemaking
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
Underground Injection Control (UIC) program: Chapter 173-218 WAC
We regulate discharge of injection well fluids to protect against groundwater contamination.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/underground-injection-control-program
73 results
41 - 60 of 73