Palouse agriculture slice

Irrigation System Aquatic Weed Control NPDES General Permit

We will soon update the Irrigation System Aquatic Weed Control General Permit. If you are currently covered by this general permit, you must submit an application to Ecology to reapply for coverage by December 15, 2016 in order to remain under coverage of the current general permit. After December 15, 2016, no applicants for coverage under this general permit will be granted until the general permit is reissued by Ecology.

To submit an application to reapply for coverage please return your completed application form to the Department of Ecology by December 15, 2016:

Current Permit

Public Comments

We are currently requesting public comments on the Determination of Significance and the scope of the Environmental Impact Statement. The comment period ends at 5:00 pm on May 20, 2017. Please use the form below to submit your comments.

Email comments to:

Mail comments to:

Nathan Lubliner
Washington State Department of Ecology
PO Box 47600
Olympia, WA 98504

Additional Information


Addison Houston


Lake Chelan winery, photo courtesy of VineLines

Addison Houston