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.
RCW Chapter 36.70A
Growth management planning by selected counties and cities
https://ecology.wa.gov/rcw-chapter-36-70a
RCW Chapter 43.21B
Environmental hearings office, Pollution control hearings board
https://ecology.wa.gov/rcw-chapter-43-21b
2016 Statewide Litter Data Overview
2016 data from all state-funded litter pickup programs
https://ecology.wa.gov/2016-statewide-litter-data-overview
2017 Statewide Litter Summary
Summary statistics of litter collected in 2017 from public roads and spaces, with numbers broken down by region.
https://ecology.wa.gov/2017-statewide-litter-summary
Central Region Litter 2017
Statistics for litter picked up within the Central region, broken down by county.
https://ecology.wa.gov/central-region-liltter-2017
Eastern Region Litter 2017
Statistics for litter picked up within the Eastern region, broken down by county.
https://ecology.wa.gov/eastern-region-litter-2017
Northwest Region Litter 2017
Statistics for litter picked up within the Northwest region, broken down by county.
https://ecology.wa.gov/northwest-region-litter-2017
Southwest Region Litter 2017
Statistics for litter picked up within the Southwest region in 2017, broken down by county.
https://ecology.wa.gov/southwest-region-litter-2017
Water Quality Index spreadsheet, version 6
The Water Quality Index, or WQI, summarizes and presents water-quality data in an easily understood format. This spreadsheet is a downloadable tool for calculating a WQI score based on your own data.
https://ecology.wa.gov/water-quality-index-version-6
Pollution prevention services for medium and large businesses
Get pollution prevention technical assistance for your medium or large business.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/pollution-prevention-services/toxics-reduction-assistance
SEPA Review and Commenting Guidance
SEPA guidance for document reviewers.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/review-commenting
Online tools & databases
This is the gateway to Ecology's many web-accessible databases and tools.
https://ecology.wa.gov/online-tools-databases
Dangerous waste permits
Facilities that store, treat, or dispose of dangerous waste must have a dangerous waste permit.
https://ecology.wa.gov/regulations-permits/permits-certifications/dangerous-waste-permits
Cannabis Lab Accreditation Webinar Slides, 10-25-2018
Slide deck from outreach event about the draft legislative report on the accreditation of cannabis laboratories.
https://ecology.wa.gov/cannabis-labs-webinar-slide-deck-no-audio
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