Residential water filters come in all shapes and sizes. From small faucet-mount systems and pour-through pitchers to under-the-counter plumbed-in systems and large point-of-entry (POE) whole-house systems, the choices are endless for consumers looking for a water filtration system.To make the decision even more difficult, water filters are available with a wide range of performance claims as well.
Nsf Water Standards
Nsf Ansi Standard 42 Requirements
Nsf Ansi Standard 42 Pdf Viewer. Residential Drinking Water Treatment Standards. NSF developed its first drinking water treatment standard in 1. Today, we test to seven point- of- use/point- of- entry (POU/POE) drinking water treatment standards and have certified thousands of systems and components. Ultraviolet microbiological water treatment systems NSF International Standard/ American National Standard NSF/ANSI 55 – 2002. Tent with International Standards, the minimum UV dose in NSF/ANSI 55 2002 has been changed to 40 mJ/cm2. Water contact materials in Drinking Water Treatment Units listed under NSF/ANSI 42, 44, 53, 55, 58.
Product certification gives customers confidence that the claims made by a certified product have been verified by an independent third party. Choosing a certified product is recommended and can help narrow the field of available water filtration systems, but purchasing a water filtration system is still a difficult decision.Knowing the different types of chemical reduction claims available for drinking water filters and the differences between the two industry standards for drinking water filters can be useful when helping customers choose the correct product. Standards for FiltersResidential drinking water filters are covered by two industry standards: NSF/ANSI Standard 42 and NSF/ANSI Standard 53. The standards are identical when it comes to evaluating the materials safety and structural integrity of a filtration system (if connected to a pressurized supply), but each standard covers a different type of chemical reduction performance testing. Standard 42 covers aesthetic (taste and odor) claims, while Standard 53 addresses health-related claims. Although both standards cover drinking water filters, the methods of performance testing found in the standards vary.