Sustainability

  1. Lake County NPDES MS4 Program

    Phase I of the National Pollutant Discharge Elimination System (NPDES) storm water program began in 1990 and required medium and large municipal separate storm sewer systems (MS4s) to obtain NPDES coverage.

  2. Lake County MS4 Program Documents

  3. Lake County Construction Activity Permit Documents

    Phase I of the National Pollutant Discharge Elimination System (NPDES) storm water program began in 1990 and required medium and large municipal separate storm sewer systems (MS4s) to obtain NPDES coverage.