Fluoride can occur in drinking water naturally as a result of the geological composition of soils and bedrock. Most water supplies contain some naturally occurring fluoride. Fluoride also enters drinking water in discharge from fertilizer or aluminum factories. The decision to fluoridate a water supply is made by the State or local municipality. EPA has set the level of protection for fluoride at 4.0 mg/L or 4.0 ppm, to prevent potential health risk.
Capacity is up to 11,000 ppm with effluent levels below 0.2 ppm from 10 ppm feed. Note: high pH and high bicarbonate levels reduce capacity - above 100 ppm bicarbonate, reduction by 50%; above 200 ppm, reduction by 75%. Contains fine-mesh pre-resin media in the unit to reduce fluorides below 0.5 ppm
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