Code of Federal Regulations: Title 40 – Protection of Environment EPA Source: Click Here Regulation Summary: Click Here Hypochlorous Acid: Click Here
Food Contact Surfaces Hypochlorous Acid may be applied to food-contact surfaces in public eating places, dairy-processing equipment, and food-processing equipment and utensils. When ready for use, the end-use concentration of all hypochlorous acid chemicals in the solution is not to exceed 200 ppm determined as total available chlorine.
Drinking Water In drinking water, hypochlorous acid should not exceed 4 mg/L (4 ppm). See the EPA National Primary Drinking Water Regulations: Click Here