EPA has set an enforceable regulation for mercury, called a maximum contaminant level (MCL), at 0.002 mg/L or 2 ppb.

EPA has set an enforceable regulation for 1,2-dichloroethane, called a maximum contaminant level (MCL), at 0.005 mg/L or 5 ppb.

EPA has set an enforceable regulation for 1,1-dichloroethylene, called a maximum contaminant level (MCL), at 0.007 mg/L or 7 ppb.

EPA has set an enforceable regulation for 1,2-dibromo-3-chloropropane, called a maximum contaminant level (MCL), at 0.0002 mg/L or 200 ppt.

EPA has set an enforceable regulation for selenium, called a maximum contaminant level (MCL), at 0.05 mg/L or 50 ppb.

EPA has set an enforceable regulation for 1,1,1-trichloroethane, called a maximum contaminant level (MCL), at 0.20 mg/L or 200 ppb.

EPA has set an enforceable regulation for methoxychlor, called a maximum contaminant level (MCL), at 0.04 mg/L or 40 ppb.

EPA has set an enforceable regulation for ethylbenzene, called a maximum contaminant level (MCL), at 0.7 mg/L or 700 ppb.

EPA has set an enforceable regulation for simazine, called a maximum contaminant level (MCL), at 0.004 mg/L or 4 ppb.

EPA has set an enforceable regulation for 1,2,4-trichlorobenzene, called a maximum contaminant level (MCL), at 0.07 mg/L or 70 ppb.