40 CFR § 141.54
Maximum residual disinfectant level goals for disinfectants
June 9, 2020
MRDLGs for disinfectants are as follows:
Open Table
| Disinfectant residual | MRDLG(mg/L) |
|---|---|
| Chlorine | 4 (as Cl2). |
| Chloramines | 4 (as Cl2). |
| Chlorine dioxide | 0.8 (as ClO2) |
[63 FR 69465, Dec. 16, 1998]
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