Municipal Separate Stormwater Sewer System (MS4)

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Hagins (3)The purpose of this web page is to increase public awareness about Rock Hill’s implementation of the Municipal Separate Storm Sewer System (MS4) as part of the Federal Phase II Stormwater Management Program.

New federal stormwater management regulations require the City of Rock Hill apply for and maintain a National Pollutant Discharge Elimination System (NPDES) permit to discharge stormwater from the City’s Municipal Separate Storm Sewer System (MS4).


The federal regulations establish six categories of Best Management Practices (BMP’s) that must be implemented by all permittees. Each municipality subject to the regulation must implement a stormwater management program which contains all of these elements. The six BMP categories, also called “minimum control measures”, are as follows:

  1. Public Education
    Distribute stormwater pamphlets to all target audiences, educational materials to schools, community organizations, and businesses.
  1. Public Involvement
    Conduct public meetings to inform the public about the City’s stormwater management ordinance and regulations. Assist York County Engineering with the Adopt a Stream Program. Involve local groups such as Boy Scouts, Girl Scouts, etc. Anyone interested in any of these programs or public participation, please contact David Dickson at 803-329-7026.

    Please visit this link to the York County Website for more information about the Adopt A Stream program.
  1. Illicit Discharge Detection and Elimination
    Create map of all outfalls within the community, evaluate for illicit discharges and eliminate via existing ordinances.
  1. Construction Site Stormwater Runoff Management
    Attempt to educate developers within the municipality on enforced stormwater codes.
  1. Post Construction Stormwater Management
    This section addresses the codes dealing with stormwater runoff after construction is complete. The City of Rock Hill has implemented a Sediment Control and Inspection report for this purpose.
  1. Good Housekeeping and Pollution Prevention
    Comprehensive pollution prevention program for municipal operations; with a focus on vehicle maintenance, fueling and washing, maintenance of stormwater facilities, and employee training. Inform City workers about Best Management Practices and distribute informative materials. Industrial facilities, including the Airport, Water Filter Plant, Waste Water Treatment Plant, Operations Center and Garage, all have a Stormwater Pollution Prevention Plan in place.

Rock Hill is actively participating in this program and is presently adhering to the established permit limits, schedules, and measurable goals. Check the following link to review ordinances that pertain to Stormwater Management in Rock Hill:

Zoning Ordinance


Please contact Planning and Development with questions regarding these and other ordinances.

For more information on the City of Rock Hill’s Stormwater Program please contact:  Stormwater Hotline: 803-329-5614

If you see an illegal discharge or runoff pollution, please call 803-329-5500 to report the problem.


The following links contain helpful information and materials on Stormwater Management: