§143.3. Secondary maximum contaminant levels.
40 C.F.R. § 143.3
The secondary maximum contaminant levels for public water systems are as follows:
Notes, amendments, and revision history
Amendments
[44 FR 42198, July 19, 1979, as amended at 51 FR 11412, Apr. 2, 1986; 56 FR 3597, Jan. 30, 1991]
Authority
Authority: 42 U.S.C. 300f et seq.
Source
Source: 44 FR 42198, July 19, 1979, unless otherwise noted.
Amendments
[44 FR 42198, July 19, 1979, as amended at 51 FR 11412, Apr. 2, 1986; 56 FR 3597, Jan. 30, 1991]