S.C. Code Regs. § § 61-58.9.G

Current through Register Vol. 48, 12, December 27, 2024

Section 61-58.9.G - Variances and Exemptions from the Maximum Contaminant Level for Total Coliforms

(1) The following are identified as the best technology, treatment techniques, or other means available for achieving compliance with the MCL for total coliforms:

(a) Protection of wells from contamination by coliforms by appropriate placement and construction;

(b) Maintenance of a disinfectant residual throughout the distribution system;

(c) Proper maintenance of the distribution system including appropriate pipe replacement and repair procedures, main flushing programs, proper operation and maintenance of storage tanks and reservoirs, and continual maintenance of positive water pressure in all parts of the distribution system;

(d) Filtration and/or disinfection of surface water, as described in R.61-58.10, or disinfection of ground water using strong oxidants such as chlorine, chlorine dioxide, or ozone; or

(e) The development and implementation of an EPA-approved State Wellhead Protection Program under section1428 of the Federal Safe Drinking Water Act.

(2) No variances or exemptions from the maximum contaminant levels in R.61-58.5.F or the treatment technique requirements of R.61-58.10 are permitted. In accordance with EPA rules, the Department has stayed the effective date of this section relating to the total coliform MCL of R.61-58.5.F(1) for systems that demonstrate to the Department that the violation of the total coliform MCL is due to persistent growth of total coliforms in the distribution system rather than fecal or pathogenic contamination, a treatment lapse or deficiency, or a problem in the operation or maintenance of the distribution system. This is stayed until March 31, 2016, at which time the total coliform MCL is no longer effective.

S.C. Code Regs. § 61-58.9.G

Amended by State Register Volume 38, Issue No. 9, eff. 9/26/2014.