If the population equivalent data are not available or are not higher than the actual population, the census taken each decade or a special census taken by the United States bureau of census shall be used to determine the population served by a water treatment plant, water distribution system, wastewater treatment plant, or wastewater collection system. A system may determine an actual population count served by the system or plant.

Source: 6 SDR 49, effective November 19, 1979; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 27 SDR 53, effective December 4, 2000.

General Authority: SDCL 34A-3-24.

Law Implemented: SDCL 34A-3-2.