Industrial Pretreatment

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Dorchester County Water & Sewer has an Industrial Pretreatment Program that enables the County to comply with all applicable State and Federal laws, including the Clean Water Act (33 United States Code [USC] section 1251 eq seq.), the General Pretreatment Regulations (Title 40 of the Code of Federal Regulations [CFR] Part 403), and the State of South Carolina General Pretreatment Regulations for Existing Sources of Pollution (SC R. 61-9.403). The objectives of the Pretreatment Program are:

  • To prevent the introduction of pollutants into the Publicly Owned Treatment Works (POTWs) that will interfere with its operation.
  • To prevent the introduction of pollutants into the POTW that will pass through inadequately treated.
  • To protect both the POTW personnel and the general public.
  • To promote reuse and recycling of industrial wastewater and sludge from the POTW.
  • To enable the County to comply with its National Pollutant Discharge Elimination System (NPDES) permit conditions, sludge use and disposal requirements, and any other Federal or State laws to which the POTW is subject.

There are five (5) permitted industries that are a part of the Pretreatment Program in Dorchester County. These industries make up approximately 19% of treated flow. Refer to Sewer Use Ordinance for Dorchester County’s Pretreatment Standards.

For more information visit the South Carolina Department of Health and Environmental Control’s (SC DHEC) Pretreatment Standards.

Some industrial sewer customers may be asked to fill out a Pretreatment Questionnaire. Once the questionnaire is completed, the form should be returned to Ann Marie Varn or fax to (843) 832-0073 or (843) 563-0073.

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