NPDES Phase II Municipal Stormwater Permit Program


The National Pollutant Discharge Elimination System (NPDES) Phase II Municipal Stormwater Permit for Western Washington was issued by the Department of Ecology in January of 2007 and went into effect in February. The permit requires that all phase II municipalities create and implement a Stormwater Management Program (SWMP) which addresses five required program elements: 1) Public Education and Outreach, 2) Public Involvement and Participation, 3) Illicit Discharge Detection and Elimination, 4) Construction Site Run-Off, 5) Operations and Maintenance of Post Construction Stormwater Facilities. While the Permit went into effect in February of 2007, the permit itself phases program implementation requirements out over five years.


The NPDES is a federal permit that regulates stormwater and wastewater discharges to waters of the State. While it is a federal permit, the regulatory authority has been passed to Washington State Department of Ecology (Ecology).


The City of Sedro-Woolley is requesting public review and comment on the current Annual Report and Stormwater Management Program (SWMP) document listed on the "Documents" tab. This document has been prepared in compliance with the Western Washington Phase II Municipal Stormwater Permit. SWMP documents are also available at the City of Sedro-Woolley Public Works Department located at 325 Metcalf Street, Sedro-Woolley, WA 98284. These documents will be updated annually in March to address the additional phased permit requirements as they come into effect. Please direct comments to