The secondary maximum contaminant levels for public water systems are as follows
Contaminant Level
Aluminum*. . . . . . . . . . . . . . . . . . . . . 0.05 to 0.2 mg/L
Chloride . . . . . . . . . . . . . . . . . . . . . 250 mg/L
Color . . . . . . . . . . . . . . . . . . . . . . 15 color units
Corrosivity . . . . . . . . . . . . . . . . . . . non-corrosive
Fluoride . . . . . . . . . . . . . . . . . . . . . 2.0 mg/L
Foaming Agents . . . . . . . . . . . . . . . . . . 0.5 mg/L
Iron . . . . . . . . . . . . . . . . . . . . . . . 0.3 mg/L
Manganese . . . . . . . . . . . . . . . . . . . . 0.05 mg/L
Odor . . . . . . . . . . . . . . . . . . . . . . . 3 threshold odor number
pH . . . . . . . . . . . . . . . . . . . . . . . . 7.0 - 10.5
Silver . . . . . . . . . . . . . . . . . . . . . . 0.1 mg/L
Sulfate . . . . . . . . . . . . . . . . . . . . . 250 mg/L
Total dissolved solids (TDS) . . . . . . . . . . . 500 mg/L
Zinc . . . . . . . . . . . . . . . . . . . . . . . 5 mg/L
*The secondary maximum contaminant level for aluminum is a range, with the precise level applicable to each public water system to be determined by the director.
Ohio Admin. Code 3745-82-02
Rule promulgated under: RC Chapter 119.
Rule amplifies: RC 6109.04