NSF International has certified the first paper drinking-water filtration medium that reduces arsenic V (pentavalent arsenic) and lead to below the action levels set by US EPA and the World Health Organization (WHO). Mesofilter’s Mesopaper, which can be used as a filtration medium in various types of residential drinking water filters, has been certified to NSF/ANSI 53: Drinking Water Treatment Units–Health Effects, the American National Standard for drinking-water treatment units. As part of the NSF International certification, Mesopaper has been verified to reduce arsenic to below the US EPA and WHO health advisory levels of 10 parts per billion (ppb). The material is also NSF certified for lead reduction to 10 ppb or less, which is lower than the US EPA action level of 15 ppb.


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