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About Us

Research & Data

Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our state’s land, air, and water. We provide access to that data through reports, databases, maps and user-friendly online tools.

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2014 moderate risk waste report - 2014 Solid Waste Report
Moderate risk waste data from the 2014 solid waste report
Rulemaking Proposal (WAC 173-350) 1/23/18
This is a rulemaking proposal (CR-102) for WAC 173-350 Solid Waste Handling Standards
Rulemaking proposed language (WAC 173-350) 1/23/18
This is proposed rule language for WAC 173-350 Solid Waste Handling Standards.
Fertilizer Production Companies - look-up tool
Information about commercial fertilizers that are registered for distribution in the state of Washington.
Hazardous Waste Institutional Memory (IM) Compendium
A reference tool that provides guidance about specific dangerous waste issues. Includes reference memos, letters and other documents written by Ecology staff.
Children's Safe Product Act Reported Data
Search the database of reports required from manufacturers of children's products about the presence of specific toxic chemicals of concern in their products. Products covered include toys, cosmetics, jewelry and baby products.
Rulemaking Announcement (WAC 173-305) 07/14/16
This is a rulemaking announcement (CR-101) for WAC 173-305 Hazardous Waste Fee Regulation.
Solid Waste Information Clearinghouse
(SAW account required)
Proposed rule language (WAC 173-305) 11/23/16
This is proposed rule language for WAC 173-305 Hazardous Waste Fee Regulation.
Rulemaking Proposal (WAC 173-305) 11/23/16
This is a rulemaking proposal (CR-102) for WAC 173-305 Hazardous Waste Fee Regulation.
Preliminary Draft Rule Text (PDF)
Read the text of the rule with proposed changes highlighted.
Materials composted in Washington 2016
A spreadsheet of facilities showing the types and quantities of materials composted in 2016.
Moderate Risk Waste - 2013 Solid Waste Report
Moderate risk waste data from the 2013 solid waste report
Rulemaking Adoption Notice (WAC 173-305) 04/05/17
This is a rulemaking adoption (CR-103) for WAC 173-305 Hazardous Waste Fee Regulation.
Waste 2 Resources Advisory Committee Roster
Current membership roster for the Waste 2 Resources Advisory Committee
Preliminary rule language (173-305) 07/14/16
This is the preliminary rule language for 173-305 Hazardous Waste Fee Regulation.
Adopted rule language (WAC 173-305) 04/05/17
This is adopted rule language for WAC 173-305 Hazardous Waste Fee Regulation.
Public input and events listing
Information on Ecology's public hearings, meetings, workshops, open houses, and open comment periods.
Scientific services
We offer scientific services to support environmental work and inquiry for projects funded through public dollars. We provide accurate, credible, and defensible analyses using the latest accredited methods.
Rulemaking at Ecology
Ecology has delegated federal and state authority to implement and enforce various environmental laws and rules. We accomplish this through our open and public rulemaking process.
379 results 1 - 20 of 379   Next page