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.

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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

Online UIC injection well registration

We provide online access to register new and existing underground injection control (UIC) wells.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/underground-injection-control-program/register-uic-wells-online

Hydrologic performance of bioretention

Study of the oldest bioretention facilities to evaluate infiltration performance.

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/bioretention-infiltration

Underground injection control well registration requirements & information

Get Underground Injection Control (UIC) well registration requirements and information.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/underground-injection-control-program/uic-registration-requirements-information

Heat pump & air conditioning return flow UIC wells

Groundwater circulated through a heat pump/air conditioning (HAC) system has to meet requirements.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/underground-injection-control-program/heat-pump-air-conditioning-return-flow-wells

Sprague Lake Community Mtg

Sprague Lake Hydrology Analysis Community Kick-Off Meeting November 22, 2022

https://ecology.wa.gov/sprague-lake

ECY to Pend Oreille County regarding SEPA lead request

ECY response to Pend Oreille County Commissioners' letter requesting Ecology take the lead agency role in Environmental review of PacWest Silicon’s proposal

https://ecology.wa.gov/ecy-to-po-commissoners_lead-ag_july2018

KeepingYourBeachClean

An infographic with tips on how to keep your beach clean.

https://ecology.wa.gov/beach-infographic-print-version