Below are the performance results of ZeroWater’s 5-stage filter vs. a conventional filter for inorganic chemicals as listed under the EPA’s national primary drinking water regulations and contaminants listed under the EPA’s secondary drinking water standards. Results shown are based on a 150 litre filtration, double the rated usage to ensure consumer safety.
Test results as performed by 3rd party laboratory is based on NSF/ANSI testing protocol of pour through devices for contaminants listed under the National Primary Drinking Water Standards.
Brita® is a registered trademark of Brita®, L.P, which is not affiliated with Zero Technologies, LLC.
Challenge Water Preparation:
The Metals challenge water was prepared by adding the appropriate amount of reagent standard to 20 Litres of water to get a concentration stated by the NSF/ANSI standard 42 or 53 for each metals, except for those metals that are not included in the NSF/ANSI standard, these metals were prepared 10 times the concentration of the EPA drinking water limit for that particular metal. The challenge water was passed through each filter, side by side, at a rate of 1 litre, 45 minutes load/45 minutes rest, and a filtered water sample was taken from each filter after 20 litres and tested for each metal using the EPA method 200.8 except for Iron that was tested using SM 3111-B. Adjusted the pH to 6.5 and 8.5 for all contaminants and the average of the two results was reported for each metal.
Summary:
The compounds tested are compounds listed by EPA as Primary and Secondary drinking water contaminants. The compounds tested are also listed by the NSF/ANSI Standard 53 and Standard 42 with established procedures for filter manufactures reduction claims. The procedure used in this comparison study were based on the NSF/ANSI standards 42 and 53, 2018 editions. The methods of analysis used in this study are EPA approved methods for drinking water.