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Municipal Separate Storm Sewer System (MS4) NPDES Annual Report
For any questions or concerns contact Barbara Seal at


Water Quality Guidelines

To assist business, industry and the public in complying with the county's Illicit Discharge and Illegal Connection Ordinance the county has developed the following water quality guidelines.

These guidelines were developed to:
(1) provide details of water quality best management practices that may be implemented to assist in controlling pollutants associated with potentially polluting activities and prevent water pollution;
(2) serve as a reference for regulators, inspectors and others who assess the water quality impacts of potentially polluting activities; and
(3) provide guidance that, if implemented, will assist in securing compliance with Gwinnett County's Illicit Discharge and Illegal Connection (IDIC) Ordinance.

Guidelines developed to date include:

WQ-01 Surface Cleaning
WQ-02 Fuel Dispensing Facilities
WQ-03 Secondary Containment
WQ-04 Portable Toilet Management
WQ-06 Wash Bay Design Standards
WQ-10 Secondary Containment- Fuel Storage at Construction Sites
WQ-11 Commercial Landscaping and Lawn Care Services

The county is planning to establish guidelines for the following activities in the near future:

WQ-05 Commercial Car Washing Operations
WQ-07 Residential Car Washing
WQ-08 Charitable Car Washing
WQ-09 Mobile Car Washing
WQ-12 Swimming Pool Management
WQ-13 Carpet Cleaning

Should you have any questions about these guidelines please email Barbara Seal.

Locating Impaired Stream Segments
Businesses who need to determine the applicability of Appendix C of the 2012 version of the Georgia EPD Stormwater Industrial General Permit (GAR050000). Following this standard operating procedure will allow a business to locate their parcel, and determine if they are within one mile of a State listed impaired stream segment. Any and all questions about the Permit should be directed to the Georgia EPD at 404.675.6240.

Gwinnett County Impaired Stream Location SOP (PDF)