Industrial Pre-Treatment Program

The Pretreatment Program was established to control the discharges of industrial users into its sewer system.  The Environmental Protection Agency first issued pretreatment regulations in 1978.  The State of North Carolina identified a need for establishing pretreatment programs in 1980.  The four main objectives were and still are:

  • To prevent interference with the Wastewater Treatment Facility's operations.
  • To prevent pollutant pass-through to the Wastewater Treatment Facility's receiving stream.     
  • To prevent sludge contamination.
  • To prevent worker exposure

Pretreatment Staff compile lists of potential industries and then survey, inspect and analyze the discharges of these industries.  The data from all the tests are analyzed and compiled.  Specific industries as defined by NCAC 2H .0903(34) called significant industrial users must be permitted under the Pretreatment Program.  A Significant Industrial User is defined by the US Environmental Protection Agency (EPA) as an industrial user that discharges process wastewater into a publicly owned treatment works (POTW) and meets at least one of the following: 

  1. All industrial users subject to Categorical Pretreatment Standards under the Code of Federal Regulations - Title 40 (40 CFR) Part 403.6, and CFR Title 40 Chapter 1, Subchapter  N - Effluent Guidelines and Standards; and
  2. Any other industrial user that:
  • discharges an average of 25,000 gallons per day or more of process wastewater to the POTW (excluding sanitary, non-contact cooling and boiler blowdown wastewater); or
  • contributes a process wastestream which makes up 5 percent or more of any design capacity of the POTW treatment plant; or
  •  is designated as such by the City of Reidsville Industrial Pretreatment Division on the basis that the industrial user has a reasonable potential for adversely affecting the POTW's operation or for violating any pretreatment standard or requirement.

If an industry is discharging specific pollutants into the collection system, contributes a specific loading to the POTW treatment plant, has reasonable potential for adversely affecting the POTW treatment plant operation or contributes large amounts of water, steps are taken to permit the industry. 

For Additional information regarding regulations and permitting please visit:

NC Department of Environmental & Natural Resources: Pretreatment

City of Reidsville Sewer Use Ordinance

Mercury Reduction Program