Washington is divided into 62 Water Resource Inventory Areas (WRIAs) based on natural watersheds. Due to Washington’s varied land uses, hydrology, and precipitation levels, the amount of water ...

Now through Jan. 28, 2025, the public is invited to review and comment on model ordinances that will help city and county ...

The expansion of the Pasco Process Water Reuse Facility has been an example of how working together can lead to successful ...

The Emergency Planning and Community Right-to-Know Act (EPCRA) protects public health, safety, and the environment from chemical hazards. This is done by requiring federal and state governments, local ...

Every year, 20 billion gallons of oil moves through Washington by vessel, rail, and pipeline, posing significant risk of environmental damage. The risks associated with all modes of oil transportation ...

Burn bans are called in the winter when smoke from wood stoves and fireplaces increase fine particle pollution. Always check ...

The Washington Natural Resource Damage Assessment (RDA) Committee meets monthly to determine the most appropriate method for assessing environmental injury from oil spills into state waters.

Our Permitting and Reporting Information System (PARIS) database contains information about water quality permits, inspections, enforcement actions, and discharge monitoring reports (DMRs). Both ...

The following templates are based on applicable SEPA rule sections and other guidance materials. Lead agencies are encouraged to modify these templates for their own use and add information for ...

The Salish Sea Model was developed by Pacific Northwest National Laboratory (PNNL) in collaboration with scientists within our Environmental Assessment Program. The model is a powerful computerized ...

The Shoreline Management Act (SMA) requires all counties and most towns and cities with shorelines to develop and implement Shoreline Master Programs. The law also defines our role in reviewing and ...

Waters of the state belong to the public and can't be owned by any individual or group. Instead, a person or group may be granted a right to use a volume of water, for a defined purpose, in a specific ...