NOTICE: Ecology will suspend certain services starting July 1 in the unlikely event the Legislature does not enact state budgets before July 1. More information about suspended services.

Water Quality photo identifier

Water Quality Program

Aquatic Invasive Species Management General Permit

The Aquatic Invasive Species Management General Permit (permit) is a combined National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit. It covers the in-water treatment of aquatic invasive animal species and nonnative invasive marine algae. This permit will allow for the treatment of early infestations and for small localized projects that may lead to the eradication or containment of invasive species.

Permit Documents

Washington Fish and Wildlife Timing Table

Final Environmental Impact Statement (FEIS)

Historical Information

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Northern pike

Aquatic Pesticide NPDES Permit ListServ