Donate to Hurricane Recovery

Stormwater Program


The Stormwater Program develops and implements programs to protect North Carolina’s surface waters from stormwater runoff:

  • NPDES Industrial Stormwater Program:  Covers approximately 4,130 facilities (3100 under general permits, 150 under individual permits, and 880 facilities under no exposure certifications).  Industrial activities are required to manage and monitor their facilities for potential sources of stormwater pollution.
  • NPDES MS4 Program:  Covers 122 entities within urbanizing areas, such as municipalities, counties and universities. Other MS4 permittees include military bases and NCDOT.  MS4 entities implement measures within their jurisdictions to prevent and control stormwater pollution from developed areas.
  • NPDES Construction Program:  Covers construction activities that disturb one or more acre under a general permit (NCG01000).  Permittee must have an Erosion and Sedimentation Control Plan, adhere to materials handling protocols, inspect their sites and keep records.  We partner with the DEMLR Sediment Program to implement the requirements of this program. 
  • Post-Construction Program:  Requires new developments to have permanent stormwater management measures after the project is built.  There are numerous post-construction programs, including Water Supply Watershed, Coastal Counties, MS4 Tipped, HQW & ORW, and Special Watersheds.
  • The Stormwater Design Manual is a technical guidance document about implementing the rules pertaining to post-construction stormwater.  The companion to the manual is the Stormwater Control Measure Credit Document, which includes the state’s estimation of each SCM’s effectiveness in protecting hydrology and removing pollutants.
  • Compliance assistance for all of the above programs.

NC Stormwater Program 2018: Achievements and Aspirations by Annette Lucas

Updates for December 2018

  • The General Permits for Metal Fabrication (NCG03), Food and Kindred (NCG06), Transit and Transportation (NCG08), Paints and Varnishes (NCG09), Used Motor Vehicles (NCG10) and Landfills (NCG12) were renewed effective November 1, 2018.
  • The General Permits for Construction Activities (NCG01 and NCG25) are scheduled to be issued on January 1, 2019.