What is the National Pollutant Discharge Elimination System (NPDES)?
As authorized by the Clean Water Act, the National Pollutant Discharge Elimination System (NPDES) permit program controls water pollution by regulating point sources that discharge pollutants into waters of the United States. Industrial, municipal and other facilities must obtain permits if their discharges go directly to surface waters. The City of McPherson stormwater system discharges into Bull Creek, Turkey Creek and Mingenback Lake.

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1. What is the National Pollutant Discharge Elimination System (NPDES)?
2. What is the Municipal Separate Storm Sewer System (MS4)?
3. Why does the City have a Phase II permit?
4. What does the Phase II permit require?
5. What kind of sampling is the City required to do?
6. What are the Six Minimum Control Measures?