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.
Publication: Hydrofluorocarbons Adopted Rule Language – Informational Guidebook
This guidebook is supplemental and is intended to provide general information to stakeholders about the Chapter 173-443 WAC Hydrofluorocarbons (HFCs) and Other Fluorinated Greenhouse Gases rule language and how it may affect them.
https://ecology.wa.gov/publication-hydrofluorocarbons-adopted-rule-language-informational-guidebook
Chapter 173-360A WAC
This is the rulemaking page for Chapter 173-360A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-360a
Chapter 173-04 WAC
This is the rulemaking page for Chapter 173-04 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-04
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
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 173-135 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 173-167 WAC Emergency Drought Funding (2021)
This is the emergency rulemaking page for Chapter 173-167 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-167-2021
Chapter 173-185 WAC
This is the rulemaking page for chapter 173-185 WAC, Oil Movement by Rail and Pipeline Notification.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-185
Chapter 173-180 WAC and Chapter 173-184 WAC
This is the rulemaking page for Chapter 173-180 WAC and Chapter 173-184 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-180-173-184
Chapter 173-201A WAC (Aquatic Life Toxics Criteria)
This is the rulemaking page for Chapter 173-201A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-201a-aquatic-life-toxics-criteria
Chapter 173-201A WAC (revisions)
On Dec. 30, 2019, Ecology adopted amendments to Chapter 173-201A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-201a-revisions
Chapter 173-201A WAC (Chelan UAA)
This is the rulemaking page for Chapter 173-201A WAC (Chelan UAA)
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-201a-chelan-uaa
Chapter 173-219 WAC
On January 23, 2018 the Department of Ecology adopted new rule, Chapter 173-219 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-219-jun14
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 173-228 WAC
On April 9, 2018, Ecology adopted a new rule, Chapter 173-228 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-228-jul17
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 173-224 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
Chapter 173-305 WAC
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
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
487 results
1 - 20 of 487