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 173-525 WAC
This is the rulemaking page for Chapter 173-525 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-525-mar05
Chapter 173-526 WAC
This is the rulemaking page for Chapter 173-526 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-526-mar05
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
Chapter 197-11 WAC (SEPA rules – expedited rulemaking)
This is the Rulemaking page for Chapter 197-11 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-197-11-sepa-rules
Chapter 173-167 WAC Emergency Drought Funding (2023)
This is the rulemaking page for Chapter 173-167 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-167-2023
Chapter 173-446 WAC – Allowance Price Containment Reserve
This is the rulemaking page for Chapter 173-446 WAC, Allowance Price Containment Reserve.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446-apcr
WAC 173-166 Emergency drought relief
This is the rulemaking page for Chapter 173-166 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-166
WAC 173-337 – Safer Products Restrictions and Reporting
This is the rulemaking page for Chapter 173-337 WAC
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-337-nov2023
Chapter 173-26 and 173-27 WAC, Shoreline Management Act
This is the rulemaking page for Chapter 173-26 WAC, Chapter 173-27 WAC
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-26-27-shoreline-management-act
Chapter 173-167 WAC Emergency Drought Funding (2024)
This is the rulemaking page for Chapter 173-167 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-167-2024
Chapter 173-339 WAC – Cosmetic Products Restrictions
This is the rulemaking page for Chapter 173-339 WAC – Cosmetic Products Restrictions
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-339
Chapter 173-443 WAC – Hydrofluorocarbons (HFCs)
On Dec. 10, 2020, Ecology adopted a new rule, Chapter 173-443 WAC, Hydrofluorocarbons.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-443
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 173-424 WAC – Clean Fuels Program
This is the rulemaking page for Chapters 173-424
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-424
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
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