Utah Administrative Code (Current through November 1, 2019) |
R309. Environmental Quality, Drinking Water |
R309-520. Facility Design and Operation: Disinfection |
R309-520-5. Secondary Disinfectants
Latest version.
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Secondary disinfection provides an adequate disinfectant residual in the distribution system to maintain the quality of treated water by controlling microbiological contamination.
Secondary chemical disinfection is achieved by maintaining a detectable disinfectant residual throughout the distribution system. Allowable secondary disinfectants are chlorine and chloramine.