S.D. Admin. R. 74:04:12:23

Current through Register Vol. 51, page 67, December 16, 2024

Section 74:04:12:23 - Distribution system residual disinfection concentration sampling plans for systems that also use groundwater

The residual disinfectant concentration must be measured at least at the same points in the distribution system and at the same time that total coliform monitoring, as required in § 74:04:12:09, occurs. However, the department may allow a system which uses a combination of surface water or groundwater under the direct influence of surface water and groundwater to take disinfectant residual samples at points other than the total coliform sampling points if the department determines that such points are more representative of treated (disinfected) surface water quality within the distribution system.

31 SDR 21, effective 8/24/2004; 45 SDR 159, effective 7/1/2019

General Authority:34A-3A-3.

Law Implemented:34A-3A-3(2).