In recent history, Washington has experienced three very strong El Niño events: 2016, 1998 and 1984. All three of those years ...

The Water Quality Combined Funding Program funds projects that improve and protect water quality throughout Washington. The program combines grants and loans from state and federal funding sources.

The drought declared in April and expanded in June continues with no end in sight. A group of state and federal water supply experts — the Water Supply Availability Committee — says there’s not enough ...

The Washington State Department of Ecology seeks public comment on its draft permit renewal that will cover 52 waste sites and facilities at the Hanford Site in southeast Washington. The Hanford ...

For more than a year, we have been working with Tribes, local governments, state agencies, and the public to help us update five state shoreline management rules. While we will have final draft rule ...

We accredit environmental laboratories — including those that analyze drinking water, wastewater, surface water, groundwater, stormwater, biosolids, fish tissue, soil, sediments, and solid and aqueous ...

Residents attend one of the many tours around Capitol Lake to learn how an upcoming project will restore a historic estuary. Hundreds showed up for the open house and educational walking tour March 7.

We issue a variety of permits for industrial air pollutants and burning to make sure air pollution does not reach unhealthy levels. We help companies meet the requirements when an air permit is needed ...

Most facilities permitted under the Statewide General Permit for Biosolids Management (general permit) are required to sample their biosolids for PFAS. Review the Sampling Guidance for PFAS in ...

The following links provide information about important SEPA subjects. This information is presented to help agencies, applicants, and the public fully understand and participate in procedural ...

Washington is the second-largest wine-producing state in the nation. If not properly managed, process wastewater from wineries can potentially harm groundwater resources and damage wastewater ...

The federal Clean Air Act requires large sources and some small sources of air pollution to get an air operating permit. An air operating permit is a master document that lists all of the air ...