Contamination cleanup

When toxic materials like arsenic, petroleum, and dioxins get into soil and water, it can cost considerable time and resources to make the area usable again. Find out how cleanups are done and how they are funded. You can view details about cleanup efforts around the state and see if any are in your area. If you have contaminated property, you can learn about your options and how to get technical assistance on anything from leaky underground tanks to complex problems requiring engineered solutions.

Cleanup sites

Sediment cleanups

Cleaning up contaminated sediment protects human health and Washington's valuable natural resources.

Underground storage tanks

Our Underground Storage Tank program protects the environment by regulating more than 9,200 tanks.

Dirt Alert program

Information to help protect yourself from arsenic and lead in soil from industry and farming.

Rules directing our cleanup work

The Toxics Cleanup Program (TCP) operates under two major sets of laws.

Cleanup process

Model Toxics Control Act cleanups remove contamination and protect your health and the environment.


Our Brownfields Program helps local governments put abandoned properties back into use.

Natural resource damage assessment and restoration

Natural Resource Damage Assessment and Restoration (NRDAR) helps restore or protect natural resources.

Voluntary Cleanup Program

The Voluntary Cleanup Program helps people clean up sites independently.