Water Quality photo identifier

Water Quality Program

Aquatic Plant and Algae Management General Permit

The Aquatic Plant and Algae Management General Permit (permit) is a combined National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit. It covers the in-water and shoreline (including roadsides and ditch banks) treatment of native and noxious plants and algae. It also covers nutrient inactivation treatments. The permit allows the discharge of a specific list of aquatic labeled herbicides, algaecides, biological water clarifiers, adjuvants, marker dyes, and nutrient inactivation products into the freshwaters of Washington.

Draft Permit

The public comment period on the draft permit has closed. Ecology accepted written comments on the draft permit, fact sheet and SEPA determination from November 4 through December 18, 2015. Comments must be received or postmarked no later than 5 p.m., December 18, 2015.

Public Comments on Draft Permit

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Public Workshop and Hearing

Ecology held a public workshop and hearing at 1 p.m. December 7, 2015 in Lacey and via online webinar. The purpose of the workshop was to explain the general permit to answer questions prior to the formal public hearing. The purpose of the hearing was to provide an opportunity for people to give formal oral testimony and comments on the proposed draft permit. Written comments will receive the same consideration as oral testimony.

December 7, 2015 – 1 p.m.
Washington State Department of Ecology
300 Desmond Drive
Lacey, WA 98503-1274

Current Permit

Blue Lake plants

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How to apply for the Aquatic Plant and Algae Management General Permit

Current and Pending Permit Coverages by County

Transfer Form - Use to transfer coverage to another party.

Notice of Termination Form - Use to cancel your permit coverage.

Secure Access Washington

Freshwater Monitoring Data

Product to Active Ingredient Conversion Table - End of year reporting must be in pounds of active ingredient.

Aquatic Pesticide Permit ListServ