Under Clean Water Act regulations, local governments in the Puget Sound Basin and those subject to the federal National Pollutant Discharge Elimination System (NPDES) Storm Water Program are required to have stormwater management programs. As authorized by the Clean Water Act, the U.S. Envornmental Protection Agency's NPDES permit program controls water pollution by regulating point sources that discharge pollutants into waters of the United States. The Washington State Department of Ecology (DOE) administers the federal NPDES program in the state. See DOE's Municipal Stormwater Permits page.
The listing of salmon under the Endangered Species Act (ESA) requires that streams and wetlands be protected. All local governments with salmon habitats are encouraged to develop storm water management plans. Those seeking 4(d) rule exemptions will be required to meet National Marine Fisheries Service (NMFS) stormwater requirements.
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