3745-82-02  Secondary maximum contaminant levels.

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.

Effective:  September 13, 1993

Promulgated under: RC Chapter 119
Rule amplifies: RC Section 6109.04
Prior effective dates: 11/26/80, 3/1/88