Our economic analyses support proposed rules and permits, as well as a number of other projects and publications. We use real-world data, often collected directly from stakeholders, to comprehensively ...

We propose updates to the human health criteria in Table 240 of WAC 173-201A-240, Toxic substances, to: Replace 143 state-adopted human health criteria for 73 pollutants that the Environmental ...

We follow up on wetland mitigation sites to ensure mitigation requirements are fulfilled. Permittees are required to meet the terms and conditions of their permits, including successful implementation ...

Fire danger is high in many areas because of hot, dry weather. Most of the state is still in a drought. Burn bans are in place across Washington. Check with your local fire district before lighting ...

Working for Ecology offers great benefits — health care, retirement, vacation. But the biggest benefit of all is knowing that your work is helping create a cleaner, healthier, more beautiful state for ...

If your water right has been provisioned to meter and report your water use, these technical requirements will help you understand the types of meters and their uses, how to read your meter, and where ...

The Washington Legislature enacted the State Environmental Policy Act in 1971. Commonly called SEPA, the law helps state and local agencies identify environmental impacts likely result from projects ...

The Washington state well report (log) viewer, our most popular online resource, allows you to search for and view detailed records of the construction and subsurface characteristics of individual ...

We also provide educational resources to property owners who want to drill a new well, maintain a well, or close down (decommission) an unused well. Well drillers and property owners have the ...

The long-term sustainability of the solid waste funding system has been a concern of local governments in particular for more than two decades. We have released several reports over this time, ...

Discharge standards can vary, but most of Washington's wastewater treatment plants (WWTPs) must meet technology-based effluent limits. See full standards and alternative discharge limit details in ...

Solid waste incinerators (excluding hog fuel burners and crematoria facilities) Municipal waste landfills Special incinerator ash landfills or monofills Inert waste and demolition waste landfills All ...