Membrane Technologies and the NSF/ANSI Drinking Water Standa...
By Rick Andrew There are several membrane technologies that are widely used for treatment of drinking water. The NSF/ANSI Standards address these membrane technologies in a variety of ways and in a number of different […]
Testing POU Active Media Systems for Pentavalent Arsenic Red...
By Rick Andrew On January 22, 2001, US EPA adopted a standard of 10 µg/L as a maximum contaminant level (MCL) for arsenic. Previously, the MCL had been 50 µg/L. After a five-year implementation period, […]
Global Certifications – Reality, Myth or Other?
By Rick Andrew A term that tends to come up in conversations with manufacturers operating in multiple geographic markets is global certification. This is an interesting term because it can have several different meanings, depending […]
PFOA and PFOS Reduction
By Rick Andrew Detection of per- and polyfluoroalkyl substances (PFAS) continues to occur in drinking and source waters. These compounds are synthetic, man-made chemicals that are highly persistent and slow to degrade in the environment. […]
New NSF/ANSI 244–Supplemental Microbiological Water Treatm...
By Rick Andrew We’ve all heard of boil water notices (BWNs). Each year, thousands of them are issued by various water systems across the United States (https://www.wqa.org/Portals/0/Media%20Kit/WQA%20Publications/Boil_Water_Notice_Study_Brochure_Feb16.pdf). These notices make it clear what people are […]
RO Efficiency and Recovery
By Rick Andrew Efficiency and recovery ratings for POU RO systems are becoming more and more important as focus on water conservation increases. Systems that have higher efficiency ratings use less water than systems with […]
2021 Uniform Plumbing Code (UPC)
By Thomas P. Palkon It may seem odd to be talking about a plumbing code that will be released in 2021. With the 2018 Uniform Plumbing Code (UPC) soon to be finalized during IAPMO’s 2017 […]
Should Product Certifiers Retest Products?
By Thomas J. Spoden, CWS Product certification usually involves an independent, third-party evaluation to ensure it meets industry standards. These standards have been developed over many years with input from industry, health regulators and certifiers […]
An Overview of NSF POU/POE Standards and Protocols
By Rick Andrew Most of us are familiar with the general idea of testing and certification of POU/POE products. We know there are standards and protocols for evaluation of this type of equipment, and we […]
Certification of Components versus Systems
By Rick Andrew Certification of POU and POE equipment can take on many different forms, depending on the technology involved, the types of claims being made and the specifics of the product in question. There […]