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 three previous permits that were also issued to state agencies: Aquatic invasive species management and Fisheries resource management general permits for WDFW and the Invasive moth control general permit for WSDA. The three previous permits have expired and are being replaced.

The current permit went into effect on July 28, 2023, and expires on July 27, 2028.

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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 permits we have combined

Aquatic Invasive Species Management general permit

We issued this permit to the Washington Department of Fish and Wildlife. It allowed the treatment of early infestations and small localized projects that may lead to the eradication or containment of invasive species. This included in-water treatment of aquatic invasive animal species and non-native invasive marine algae. Visit the Aquatic invasive species management general permit webpage for more information.

Fisheries Resource Management general permit

We issued the Fisheries Resource Management permit to Washington Department of Fish and Wildlife. The permit allowed the agency to restore habitat, native species, and recreational fisheries in Washington waters. Visit the Fisheries resource management general permit webpage to learn more.

Invasive Moth Control general permit

This permit was designed to protect water quality during efforts by the Washington State Department of Agriculture to eradicate Asian and European gypsy moths. Visit the Invasive moth control general permit webpage for more about this permit.