Section 327IAC8-2.5-3. Maximum residual disinfectant levels

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(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.

(Water Pollution Control Division; 327 IAC 8-2.5-3; filed May 1, 2003, 12:00 p.m.: 26 IR 2840)

                    
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Disinfectant Residual	MRDL (mg/L)
Chlorine	4.0 (as Cl₂)
Chloramines	4.0 (as Cl₂)
Chlorine dioxide	0.8 (as ClO₂)