Indiana Administrative Code
Title 327 - WATER POLLUTION CONTROL DIVISION
Article 8 - PUBLIC WATER SUPPLY
Rule 2.5 - Disinfectants and Disinfection
Section 2.5-3 - Maximum residual disinfectant levels
Universal Citation: 327 IN Admin Code 2.5-3
Current through September 18, 2024
Authority: IC 13-13-5-1; IC 13-14-8-2; IC 13-14-8-7; IC 13-18-3-2
Affected: IC 13-12-3-1; IC 13-13-5-2; IC 13-14-9; IC 13-18-11
Sec. 3.
(a) MRDLs are as follows:
| Disinfectant Residual | MRDL (mg/L) |
| Chlorine | 4.0 (as Cl2) |
| Chloramines | 4.0 (as Cl2) |
| Chlorine dioxide | 0.8 (as ClO2) |
(b) The commissioner hereby identifies the following as the best technology, treatment techniques, or other means available for achieving compliance with the MRDLs identified in subsection (a):
(1)
Control of treatment processes to reduce disinfectant demand.
(2) Control of disinfection treatment
processes to reduce disinfectant levels.
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