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 173-167 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-173-167-2024-28119efcad412da8f533ebdc1470dba2
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
Chapter 173-443 WAC – Hydrofluorocarbons
This is the rulemaking page for Chapter 173-443 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-443-hydrofluorocarbons
Chapter 173-446 WAC – Climate Commitment Act Program Rule
This is the rulemaking page for Chapter 173-446 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446
Chapter 173-135 WAC – Pasco Basin Groundwater Subarea
This is the rulemaking page for Chapter 173-135 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-135
Chapter 173-201A WAC – Variances
This is a rulemaking page for Chapter 173-201A WAC for variances in Spokane River.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac173-201a-variances
Chapter 173-305 WAC – Hazardous Waste Fee Regulation
This is the rulemaking page for Chapter 173-305 WAC
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-305
Chapter 173-331 WAC – Vehicle Battery Recycling
This is the rulemaking page for Chapter 173-331 WAC, Vehicle Battery Recycling.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-331-dec15
Chapter 173-333 WAC – Persistent Bioaccumulative Toxins
This is the rulemaking page for Chapter 173-333 WAC, Chemical Action Plans.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-333-oct15
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
Chapter 173-446 WAC – Cap-and-Invest Offsets (Ozone Depleting Substance Protocol)
This is the rulemaking page for Chapter 173-446 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-446-offsets
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 173-166 WAC – 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
Chapter 173-337 WAC – Safer Products Restrictions and Reporting (Cycle 1.5: PFAS)
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 173-424 WAC – Clean Fuels Program
This is the rulemaking page for Chapter 173-424 WAC – Clean Fuels Program
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-424
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 173-26 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 173-339 WAC – Cosmetic Products Restrictions (Formaldehyde in Cosmetics)
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 173-448 WAC – Air Quality in Overburdened Communities
This is the rulemaking page for Chapter 173-448 WAC, Air Quality in Overburdened Communities.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-448
Chapter 173-423 WAC – Clean Vehicles Program
This is the rulemaking page for Chapter 173-423 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-423
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