Air Quality Index (AQI)
The Air Quality Index (AQI) 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.
Lake water quality monitoring & protection
Working with partners, we compile data on algae, invasive plants, and some toxic chemicals in lakes.
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.
Whole effluent toxicity testing ensures wastewater does not harm aquatic life.
Marine water & sediment monitoring
We conduct water and sediment long-term monitoring to identify ecosystem changes.
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.
Air quality studies
Information about air quality studies we conduct.
Columbia River reports & documents
Our Office of Columbia River scientific reports and documents support water supply projects for Eastern Washington
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.
BEACH annual report
See our annual county-by-county report on bacterial levels at saltwater swimming beaches for 2022.
Solid waste & recycling data
View data on solid waste collection and recycling in Washington.
Kitsap County annual BEACH report
Learn about bacteria results at Kitsap County beaches sampled in the summer of 2022.
King County annual BEACH report
We sampled 10 beaches in King County for bacteria in the summer of 2022.
Jefferson County annual BEACH report
Learn about the five beaches sampled for bacteria in Jefferson County in the summer of 2022.