The information below relates to common standards referenced in the world of residential water filtration.
Refrigerator Water Filters and other types of residential water filtration systems/components will typically (but not always) be tested or certified against at least one of these standards.
NSF/ANSI 42: Drinking Water Treatment Units - Aesthetic Effects
NSF/ANSI 42 establishes the minimum requirements for the certification of point of use (POU)/point of entry (POE) filtration systems designed to reduce specific aesthetic or non-health-related contaminants (chlorine, taste, odor and particulates) that may be present in public or private drinking water.
The scope of NSF/ANSI 42 includes material safety, structural integrity and aesthetic, non-health-related contaminant reduction performance claims. The most common technology addressed by this standard is carbon filtration.
NSF/ANSI 53: Drinking Water Treatment Units - Health Effects
NSF/ANSI 53 establishes the minimum requirements for the certification of point of use (POU)/point of entry (POE) filtration systems designed to reduce specific health-related contaminants, such as Cryptosporidium, Giardia, lead, volatile organic chemicals (VOCs) and MTBE (methyl tertiary-butyl ether), that may be present in public or private drinking water.
The scope of NSF/ANSI 53 includes material safety, structural integrity and health-related contaminant reduction performance claims. The most common technology addressed by this standard is carbon filtration.
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1 comment
This does not explain what the actual standard is or how does the specific carbon filtration in these filters meets the specific standards.
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