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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Washington Air Quality Advisory

The Washington Air Quality Advisory (WAQA) tells you when air quality is healthy or unhealthy.

Effectiveness monitoring for water quality

Our scientists study the effectiveness of projects to protect and improve water quality.

River and stream monitoring

Our freshwater data helps us to assure clean and abundant water to support human and aquatic life.

Groundwater quality assessment

Our hydrogeologists monitor and assess groundwater quality and quantity in Washington.

Wastewater testing

Whole effluent toxicity testing ensures wastewater does not harm aquatic life.

Coastal zone mapping & erosion monitoring

We survey Washington's coastlines to monitor coastal erosion and track sediment movement over time.

Monitoring for toxic chemicals

We conduct long-term monitoring to understand levels and trends of toxics in the environment.

Testing for chemicals in consumer products

We test consumer products to make sure manufacturers comply with chemical restrictions.

Models & spreadsheets

Computer models predict changes and spreadsheets calculate. We offer these tools to the public.

State agency greenhouse gas reports

Washington state agencies are tracking, reporting, and reducing their greenhouse gases.

Washington's greenhouse gas inventory

Our state greenhouse gas inventory summarizes the state's emissions by industry sector.

Climate change reports and publications

Our most current information about climate change, observations, and projections.

Washington greenhouse gas limits

We track progress in reducing carbon pollution and work to align state limits with climate science.

Columbia River reports & documents

Our Office of Columbia River scientific reports and documents support water supply projects for Eastern Washington

Tier Two data summary

A summary of chemical storage data reported to the State Emergency Response Commission

EIM — environmental monitoring data

EIM contains environmental monitoring data collected by our scientists and partners.

Toxics Release Inventory

The Toxics Release Inventory (TRI) identifies chemicals used at businesses or facilities.