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Division of Water Pollution Control


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Paul E. Davis, Director
6th Floor, L & C Annex
401 Church Street, Nashville, TN 37243
(615) 532-0625
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Stormwater Permits

NPDES Industrial
NPDES Construction
Phase I MS4
Phase II MS4s
Qualified Local Program
WPC Permits Data Viewer


Related Links

EPA Stormwater
EPA Phase I
EPA Phase II
EPA Phase II Guide


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WPC Permits DataViewer


Helpful Links

EPA HQ Office of Water
EPA Region 4 Water Protection
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Hydrologic Determinations and Certification of Hydrologic Professionals
TN Erosion Prevention and Sediment Control Training and Certification Program
Wastewater Reuse Inventory
Water Quality Complaints for Logging Activities
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  Stormwater Permitting Phase I MS4s

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 Stormwater Program in 1990. Under Phase I, EPA required NPDES permit coverage for stormwater 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 one or more acres of land.

This page contains information related to MS4s.

EPA's Stormwater Website

EPA's Phase I Web Page

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