We are responsible for protecting, preserving, and enhancing Washington’s environment. Permits and certifications ensure that individuals and businesses understand and comply with all applicable ...

Carbon pollution from human activities is making ocean water corrosive. This harms marine life. Our new scientific tool helps ...

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 ...

The state Shoreline Management Act (SMA) defines a special category of shorelines where statewide interests take priority and specific uses are preferred. These "shorelines of statewide significance" ...

Dangerous substances can spill to land, water, or air. The sooner a spill is reported, the sooner we can respond. Failure to report a spill you're responsible for could result in penalties.

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 ...

Have a wetland-related question? Find our regional wetland and subject-specific wetland contacts.

Channel migration zones are areas in a floodplain where a stream or river channel can be expected to move naturally over time in response to gravity and topography. Water bodies such as rivers and ...

If you already have a SAW account, go to Step 2 - Add service to your account. Click “WA Solid Waste and Biosolids Annual Reports” in your list of services. Click “Continue.” Go to the Facility Access ...

When food goes in the trash, so do resources, time, and money. Save on all three with small changes to your cooking and shopping habits. Get started today. Your food saving journey starts here. We’ve ...

Increasing the number of zero emission vehicles on Washington's roads will reduce total greenhouse gas emissions by the equivalent of 1 million metric tons of carbon dioxide a year by 2030. In 2020, ...

Ecology and local clean air agencies monitor particle pollution in the air to make sure it doesn't reach harmful levels. We work to reduce particle pollution by recommending cleaner wood stoves and ...