Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR Appendix I to Part 257: Appendix I to Part 257—Maximum Contaminant Levels (MCLs)

Where this section sits in the code

Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER I—SOLID WASTES
PART 257—CRITERIA FOR CLASSIFICATION OF SOLID WASTE DISPOSAL FACILITIES AND PRACTICES

Maximum Contaminant Levels (MCLs) Promulgated Under the Safe Drinking Water Act

Chemical CAS No. MCL (mg/l)

Arsenic 7440-38-2 0.05

Barium 7440-39-3 1.0

Benzene 71-343-2 0.005

Cadmium 7440-43-9 0.01

Carbon tetrachloride 56-23-5 0.005

Chromium (hexavalent) 7440-47-3 0.05

2,4-Dichlorophenoxy acetic acid 94-75-7 0.1

1,4-Dichlorobenzene 106-46-7 0.075

1,2-Dichloroethane 107-06-2 0.005

1,1-Dichloroethylene 75-35-4 0.007

Endrin 75-20-8 0.0002

Fluoride 7 4.0

Lindane 58-89-9 0.004

Lead 7439-92-1 0.05

Mercury 7439-97-6 0.002

Methoxychlor 72-43-5 0.1

Nitrate 10.0

Selenium 7782-49-2 0.01

Silver 7440-22-4 0.05

Toxaphene 8001-35-2 0.005

1,1,1-Trichloroethane 71-55-6 0.2

Trichloroethylene 79-01-6 0.005

2,4,5-Trichlorophenoxy acetic acid 93-76-5 0.01

Vinyl chloride 75-01-4 0.002

Collected 2026-08-27T02:26:04Z. Source file · JSON