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NPDES Permit Program
As a result of regulations in the Federal Clean Water Act (CWA), municipalities are required to comply with a National Pollutant Discharge Elimination System (NPDES) permit. This federal permit regulates wastewater and stormwater that is discharged into U.S. waters and waters of the state, including rivers, lakes, streams, and all underground waters and aquifers.
The Washington State Department of Ecology (Ecology) is the regulatory authority for the NPDES permit. Ecology issued the most-recent NPDES Phase II Municipal Stormwater Permit for Western Washington in August 2013, with a revised permit effective January 16, 2015. In July 2017 Ecology announced the decision to issue a one-year extension of the 2013-2018 permit, to remain in effect through July 31, 2019. A new permit will now be issued in 2019, covering the 2019-2024 period.
One of the requirements of the NPDES permit is the development and implementation of a document that outlines the required Stormwater Program. The Stormwater Management Program Plan (SWMPP), as described in the NPDES Permit, is a planning tool used to describe a municipality's current implementation of the permit, as well as plans for implementing the program in the coming calendar year.
The 2019 Stormwater Annual Report is required by the Phase II NPDES permit. The City is finalizing the report including a review of work completed and adherence to permit requirements. The annual report and referenced attachments are posted below.
The report references several attachments, which provide supplemental information about the reporting requirements. Each attachment will be linked below as a separate file, when available.
The Washington State Department of Ecology (Ecology) is the regulatory authority for the NPDES permit. Ecology issued the most-recent NPDES Phase II Municipal Stormwater Permit for Western Washington in August 2013, with a revised permit effective January 16, 2015. In July 2017 Ecology announced the decision to issue a one-year extension of the 2013-2018 permit, to remain in effect through July 31, 2019. A new permit will now be issued in 2019, covering the 2019-2024 period.
Stormwater Management Program Plan (SWMPP)
One of the requirements of the NPDES permit is the development and implementation of a document that outlines the required Stormwater Program. The Stormwater Management Program Plan (SWMPP), as described in the NPDES Permit, is a planning tool used to describe a municipality's current implementation of the permit, as well as plans for implementing the program in the coming calendar year.
- 2020 Stormwater Management Program Plan (SWMPP)
- National Pollution Discharge Elimination System (NPDES)
- Washington State Department of Ecology
- Phase II Municipal Stormwater Permit
2019 Stormwater Annual Report
The 2019 Stormwater Annual Report is required by the Phase II NPDES permit. The City is finalizing the report including a review of work completed and adherence to permit requirements. The annual report and referenced attachments are posted below.
Annual Report and Attachments
The report references several attachments, which provide supplemental information about the reporting requirements. Each attachment will be linked below as a separate file, when available.
Past Year Stormwater Plans (SWMPP)
2019 SWMPP
2018 SWMPP
2017 SWMPP
2016 SWMPP
2015 SWMPP
2014 SWMPP