Eastern Region

Ecology has four regional offices. The Eastern region includes Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, and Whitman counties.
Ecology has four regional offices. The Eastern region includes Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, and Whitman counties.

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Every day is Earth Day

For Ecology, Earth Day is more than just one day a year — it’s our mission every day.

Expedited rulemaking to amend state floodplain rules

Ecology using state expedited rulemaking process to amend state floodplain management rules

New innovative program prevents Columbia River drought shutoffs

Almost 400 water right holders are at risk of having their water shut off in the next Columbia River drought. If you’re one of them, help us prevent that and get you the water you need.

Celebrating a legacy: Office of Columbia River Director Tom Tebb embarks on retirement

Tom Tebb is retiring from Ecology after 33 years of service. Let's look back on his remarkable career and lifelong commitment to Washington state and the environment.

Balancing wildlife conservation and wastewater infrastructure in Pasco

The expansion of the Pasco Process Water Reuse Facility has been an example of how working together can lead to successful wildlife conservation and clean water infrastructure projects.   

Según las muestras, la reciente contaminación ya no se está propagando al agua subterránea en el vertedero de Pasco

Según las muestras recientes de vapor del suelo, la contaminación del agua subterránea no está afectando a la calidad del aire en los edificios del vertedero de Pasco.

Samples indicate recent contamination is no longer spreading to groundwater at Pasco Landfill

Recent soil vapor samples indicate groundwater contamination isn't affecting air quality in buildings by the Pasco Landfill. 

Las brigadas de limpieza trabajan rápidamente para abordar la reciente contaminación de agua subterránea de Pasco Landfill

Hasta el 20 de enero, invitamos a sus comentarios sobre una orden legal para abordar la contaminación del agua subterránea del Vertedero de Pasco.

Cleanup crews working quickly to address recent groundwater contamination from Pasco Landfill

Through Jan. 20, we invite your input on a legal order to address groundwater contamination from the Pasco Landfill that happened when chemicals being removed from soil weren’t fully captured.

Kaiser Aluminum combatting legacy contamination with UV light

In June, Kaiser Aluminum started up a full-scale pump-and-treat system that treats 200 gallons of groundwater per minute and destroys up to 99% of polychlorinated biphenyls (PCBs) in water.