NSF - 53 ADD
Drinking Water Treatment Units - Health Effects
Organization: | NSF |
Publication Date: | 1 April 2023 |
Status: | active |
Page Count: | 16 |
scope:
Purpose
While NSF/ANSI 42 and NSF/ANSI 53 address both point-of-use (POU) and point-of-entry (POE) devices, very few POE units have been tested and certified by third-party certifiers over the years. This is partly due to the amount of time and expenses related to testing the larger-sized POE units which are sold to users in much smaller numbers.
The following examples provide a mechanism to test smaller units and extrapolate to POE-sized systems for the same contaminant and claim. Manufacturers and certifiers are encouraged to consider this approach to evaluate POE systems to increase the availability of certified products in the marketplace and help address the needs of small community systems and private wells that are either out of compliance or at risk of contaminated drinking water sources.
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