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MS4 Phase II General Permit 2024 Renewal

Renewal for current permittees only

DEQ is beginning the process of renewing the existing Phase II General Permit. Our process is based on the renewal application information submitted by the permit registrants in accordance with current permit requirements. The renewal of the existing Phase II MS4 General Permit will only cover existing permit registrants, and no new registrants will be designated upon renewal. 


DEQ has started to reach out to permit registrants in the form of surveys and meetings with interested parties. We will soon be holding formal meetings and offering presentations focused on the renewal. 

Watch this page for more information or email questions to