Aquatic & Invasive Species Control general permit

We issue this permit to state government agencies. It allows chemical treatments to control fish, animals, and insects. The chemicals are used in freshwater (lakes, streams, and rivers) or salt water. This permit does not cover chemical treatments for noxious weeds or aquatic plants. We will continue to regulate these activities under either the Aquatic Noxious Weed Control permit or the Aquatic Plant & Algae Management permit.

The new Aquatic & Invasive Species Control permit combines and replaces three previous permits that were also issued to state agencies:

  • Aquatic Invasive Species Management (WDFW)
  • Fisheries Resource Management (WDFW)
  • Invasive Moth Control (WSDA). 

These three previous permits have expired and have been replaced. The current combined permit went into effect on July 28, 2023, and expires on July 27, 2028.

Receive email updates

Join our Aquatic Pesticide Permits email list to receive email updates about this permit.

New permit issuance

The current permit went into effect on July 28, 2023, and expires on July 27, 2028. This new permit is a combined National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge general permit and allows state agencies using aquatic pesticides and other control products to comply with with the Federal Clean Water Act and state law (RCW 90.48.080).

Current permit documents

Permit application, forms, and resources

The previous permits we have combined