Frequent Questions

Does EPA require registration of home water treatment units?

EPA only requires registration of home water treatment unit filters that incorporate a disinfectant to inhibit microbial growth. The disinfectant is considered a pesticide under the Federal Insecticide, Fungicide, and Rodenticide Act, thereby requiring registration through the EPA Office of Pesticide Programs, Antimicrobial Division (Home Water Treatment Units: Filtering Fact from Fiction, EPA570-9-90-HHH; September 1990).
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