Regulations & Permits

We oversee many state and federal laws designed to protect Washington's land, air, and water. Rules and regulations that direct state agencies, local governments, businesses, and others on how to comply with relevant laws are compiled in the Washington Administrative Code. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.
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Public input and events listing
Information on Ecology's public hearings, meetings, workshops, open houses, and open comment periods.
Ecology's blog
Our blog posts tell how Ecology works to protect Washington’s environment and quality of life. We strive to promote the wise management of our air, land and water for the benefit of current and future generations.
Clean Water Act — Section 401 Water Quality Certifications
Under the Clean Water Act, we make decisions about hydropower licenses and non-hydropower projects.
Water Quality Combined - Recipient Training - Contacts List
For funding recipients of our Water Quality Combined Funding Program, this is the list of contacts associated to the Recipient Training workshop.
Water Quality Combined funding program State Fiscal Year 2020 Applicant Workshop Notice
This is the announcement and detailed information for the Water Quality Combined funding program's Fiscal Year 2020 Applicant Workshop for anyone wanting to apply for loan or grant funding from the Water Quality Combined funding program in this next application cycle.
Applicant Prep Tool for Water Quality Combined Funding Applications in EAGL
This is the Applicant Prep Tool document for people applying for funding via a Water Quality Combined funding program application in EAGL.
Water Quality Combined funding program - Recipient Training - Resources List
For funding recipients of our Water Quality Combined Funding Program, this is the resources list for the Recipient Training workshop.
Freshwater Aquatic Plants Manual
An illustrated guide to some of the more common freshwater aquatic plants found in Washington, such as hydrilla, milfoil, pondweeds, bladderworts, and more.
401 Water Quality Certifications for non-hydropower permits
We review projects needing federal approval to assure compliance with state water quality standards.
Section 401 water quality & CZM federal consistency decisions
See our recent decisions on Section 401 water quality and CZM federal consistency.
Public Notices for Section 401 water quality certifications & CZM federal consistency
View current public notices for statewide projects seeking Section 401 water quality certification and Coastal Zone Management approval.
Environmental Information Management System (EIM) - search data
Access to discrete and time-series environmental data for air, water, soil, sediment, aquatic animals, and plants.
Environmental Assessment Program
Learn about Ecology's scientific research and services.
January 15, 2013: Final fish consumption rates technical support document
Former Ecology Director Ted Sturdevant's 2013 transmittal letter announcing release of final fish consumption rates technical support document (version 2.0).
November 5, 2012: Fish Consumption Technical Review Meeting
Meeting summary from Nov. 5, 2012, technical review panel meeting to discuss the revised version of the Fish Consumption Technical Report V.2, hosted by Washington State Department of Ecology.
August 30, 2012: Fish consumption rates technical support document [draft Version 2]
Former Ecology Director Ted Sturdevant's 2012 transmittal letter announcing release of fish consumption rates technical support document [draft Version 2.0].
November 27, 2012: Fish Consumption Technical Review Meeting
Meeting summary from Nov. 27, 2012, technical review panel meeting to discuss the revised version of the Fish Consumption Technical Report V.2, hosted by Washington State Department of Ecology.
Received through January 18, 2012: Comments on Ecology's Fish Consumption Rates Technical Support Document (Version 1)
Comments received through January 18, 2012, in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).
Received through January 18, 2012: Emailed form comments in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).
Emailed (form) comments received through January 18, 2012, in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).
Received through October 26, 2012: Comments on Ecology's Fish Consumption Rates Technical Support Document (draft Version 2.0)
Comments received through October 26, 2012, on Ecology's Fish Consumption Rates Technical Support Document (draft Version 2.0).
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