South Carolina Pretreatment Standards regulations & environmental compliance analysis

South Carolina Pretreatment Standards: What you need to know

Governing Law and Regulations

National Pollutant Discharge Elimination System (NPDES) permits: South Carolina Code of Regulations (R.) 61-9.122.1 to 61-9.122.64

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Publicly owned treatment works (POTW) pretreatment program: R. 61-9.403.1 to 61-9.403.18 and Appendices A to G

POTW program approval: R. 61-9.403.9

Industrial user (IU) reporting: R. 61-9.403.12

Disposal of sewage sludge: R. 61-9.503.1 to 61-9.503.50 and Appendices A and B

Sewage sludge: R. 61-9.503.1 to 61-9.503.50

Industrial sludge: R. 61-9.504.1 to 61-9.504.50

Disposal options: R. 61-9.504.4

Regulatory Agencies

South Carolina Department of Health and Environmental Control (DHEC) Bureau of Water

DHEC Bureau of Environmental Health

U.S. Environmental Protection Agency (EPA) Region 4

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. The state is fully authorized by the U.S. Environmental Protection Agency (EPA) to administer the NPDES permit program and the federal pretreatment program. For additional guidance, see the national section PRETREATMENT STANDARDS.

South Carolina's pretreatment standards are largely the same as the federal NPDES standard. However, there are a number of differences for submitting pretreatment programs for approval, revision, and withdrawal, and the reporting requirements for POTWs with approved pretreatment programs.

The discharge of pollutants into a POTW from any nondomestic source is prohibited if such a discharge would cause "pass through" or "interference." In addition to federal rules, South Carolina defines "interference" as including an increase in the magnitude or duration of a violation of the POTW's NPDES permit.

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