Research & Data

Use this portal to filter and search for all of our scientific information.

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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Rulemaking proposed language (WAC 173-350) 1/23/18

This is proposed rule language for WAC 173-350 Solid Waste Handling Standards.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-350-1-23-18

Active groundwater studies

We conduct groundwater studies for long- and short-term projects. Learn about our active studies.

https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index

Freshwater fish contaminant monitoring

We analyze freshwater fish for various toxic chemicals.

https://ecology.wa.gov/research-data/monitoring-assessment/toxics-monitoring/freshwater-fish-contaminant-monitoring

Mercury in fish tissue

We monitor mercury levels in freshwater fish throughout Washington.

https://ecology.wa.gov/research-data/monitoring-assessment/toxics-monitoring/mercury-in-fish-tissue

Monitoring Puget Sound from ferries

We installed sensors on passenger ferries as a cost-effective way of collecting water quality data.

https://ecology.wa.gov/research-data/monitoring-assessment/puget-sound-and-marine-monitoring/monitoring-puget-sound-from-ferries

Marine algae & plankton

Marine algae blooms are overgrowths of plankton. They can look like a spill in the water.

https://ecology.wa.gov/research-data/monitoring-assessment/puget-sound-and-marine-monitoring/marine-algae-plankton

Models and tools for water quality improvement

We use models to predict water quality changes to help find strategies to address pollution.

https://ecology.wa.gov/research-data/data-resources/models-spreadsheets/modeling-the-environment/models-tools-for-tmdls

Plaza Cleaners groundwater monitoring

We monitor groundwater for volatile organic compounds at the Plaza Cleaners Lakewood site.

https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index/lakewood-cleaners

Shelton Laundry groundwater monitoring

We measure volatile organic compounds from monitoring wells at the Shelton Laundry site.

https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index/shelton-laundry

Groundwater quality assessment

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

https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment

Lake water quality monitoring & protection

Working with partners, we compile data on algae, invasive plants, and some toxic chemicals in lakes.

https://ecology.wa.gov/research-data/monitoring-assessment/lake-water-quality

River and stream monitoring

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

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring

Marine water & sediment monitoring

We conduct water and sediment long-term monitoring to identify ecosystem changes.

https://ecology.wa.gov/research-data/monitoring-assessment/puget-sound-and-marine-monitoring

Toxics monitoring in consumer products

We design studies to test for toxic chemicals in consumer products.

https://ecology.wa.gov/research-data/monitoring-assessment/consumer-products-testing

Island County BEACH report

Learn about beaches sampled for bacteria levels in Island County in the summer of 2024.

https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/island-county

Skagit County BEACH report

Learn about beaches sampled for bacteria levels in Skagit County in the summer of 2024.

https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/skagit-county

Monitoring for toxic chemicals

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

https://ecology.wa.gov/research-data/monitoring-assessment/toxics-monitoring

Grays Harbor County BEACH report

Learn about beaches sampled for bacteria levels in Grays Harbor County in the summer of 2024.

https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/grays-harbor-county

Jefferson County BEACH report

Learn about beaches sampled for bacteria levels in Jefferson County in the summer of 2024.

https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/jefferson-county