Storm Water Permits
NPDES Industrial
NPDES Construction
Phase I MS4
Phase II MS4s
Related Links
EPA Stormwater (exit TDEC)
EPA Phase I (exit TDEC)
EPA Phase II (exit TDEC)
EPA Phase II Guide (exit TDEC)
In response to the 1987 Amendments to the Clean Water Act (CWA), the U.S. Environmental Protection Agency (EPA) developed Phase I of the NPDES Storm Water Program in 1990. Under Phase I, EPA required NPDES permit coverage for storm water discharges from:
- "Medium" and "large" municipal separate storm sewer systems (MS4s) located in incorporated places or counties with populations of 100,000 or more
- Eleven categories of industrial activity, one of which is construction activity that disturbs five or more acres of land.
This page contains information related to MS4s.
The following are already permitted Cities in Tennessee:
Knoxville: TNS068055
City
of Knoxville’s Stormwater Web Page
Nashville: TNS068047
City of
Nashville’s Stormwater Web Page
Memphis: TNS068276
City
of Memphis’s Stormwater Web Page
Chattanooga: TNS068063
City
of Chattanooga’s Stormwater Web Page
Tennessee Department of Transportation (TDOT) Municipal Separate Storm
Sewer System (MS4)
Permit Number TNS077585
