Biosolids permitting and forms

We issue permits and regulate biosolids production and use in Washington.

Comment on our plans for biosolids permitting

We are planning changes to our statewide biosolids permit to streamline permitting for facilities with straightforward permits, allowing us to focus on facilities with more complex needs.

See our notice about the planned changes.

Submit your comments by Jan. 24, 2020.

  • Email
  • Mail:
    • Emily Kijowski
      Department of Ecology, Solid Waste Management
      P.O. Box 47600, Olympia, WA 98504-7600

The biosolids general permit

Under the biosolids rule, we issue one permit for the whole state, known as a "general permit." Individual applicants receive coverage under this general permit. The most recent general permit was issued in 2015 and expires in 2020.

Permit requirements are spelled out in the biosolids rule.

Permitting process