74:02:04:62Backflow prevention
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
required for large capacity wells. All large capacity pumped wells shall be provided with check valves or other approved backflow preventer devices to protect the well from backflow or backsiphonage. When the driller does not install the pump, the pump installer shall install backflow preventer.
Source: 12 SDR 50, effective September 29, 1985; 13 SDR 129, 13 SDR 141, effective July 1, 1987.