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Louisville Receives New Stormwater Quality Permit


Louisville has been working under a stormwater quality permit since the mid-1990s. The Kentucky Division of Water (KDOW) routinely updates the Municipal Separate Storm Sewer System (MS4) permit program requirements. The purposes of this program are maintaining and benefiting the stormwater quality of creeks, streams and waterways located in Jefferson County. While the program goals are similar to those of our other sewer-related programs, the MS4 permit focuses on nonpoint source pollution that is associated with stormwater runoff. MS4 permit program activities are organized in the following eight elements:

  • Public Involvement and Outreach Program
  • Construction Site Runoff Controls
  • Long-Term (Post-Construction) 
  • Pollution Prevention Controls
  • Illicit Discharge Detection and Elimination
  • Industrial Pollution Prevention
  • Government Facility Pollution Prevention
  • Stream Monitoring
  • Reporting and Program Assessment

MSD serves as the administrative lead with several co-permittees: Louisville Metro, as well as the cities of Anchorage, Jeffersontown, St. Matthews and Shively. This third MS4 permit requires additional MSD compliance activities and new local regulations. Regulatory Services Director Brian Bingham is coordinating the permit, which includes more than 100 specific MSD requirements and involves numerous departments.