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§ 141.54 Maximum residual disinfectant level goals for disinfectants.

40 CFR 141.54

Citation40 CFR 141.54
CorpusDaily eCFR
Displayed edition2026-09-30
Last updated2026-09-30

§ 141.54 Maximum residual disinfectant level goals for disinfectants.

MRDLGs for disinfectants are as follows:

Disinfectant residualMRDLG(mg/L)
Chlorine4 (as Cl 2).
Chloramines4 (as Cl 2).
Chlorine dioxide0.8 (as ClO2)

[63 FR 69465, Dec. 16, 1998]

Authority42 U.S.C. 300f, 300g-1, 300g-2, 300g-3, 300g-4, 300g-5, 300g-6, 300j-4, 300j-9, and 300j-11.
Source40 FR 59570, Dec. 24, 1975, unless otherwise noted.