The NSF drinking water treatment unit testing and certification program includes standards to address the wide variety of point-of-use (POU) and point-of-entry (POE) drinking water treatment technologies on the market today, with more than 3,000 systems and 2,000 components currently certified under seven NSF/ANSI standards. These seven technology-specific standards are listed in Table 1.
A certification overview of POU & POE products
Understanding the different types of chemical reduction claims available for drinking water filters
I can’t believe I’m saying this, but there is a good and a bad side of consumer awareness. Just a few months back I talked about the increase of consumer awareness about water quality with recent media reports: clever TV ads such as the GE Ecomagination ad, “Fishing for Water” that informs TV viewers about GE’s desalination technology, and the report listing the different certification marks for common household goods, including the NSF Mark and WQA’s Gold Seal Mark.
Whole house filtration systems are the end of the line in defense against contaminated water. They are becoming more popular as a non-visible way (compared with end of faucet filters) to ensure safety at point of entry in the house.
POE Filter Addresses Contaminant Concerns
Problem: Giardia in the lake water (Buckskin Lake, Ontario) from beavers. An additional problem of bio-film clogging filters once system was installed. Solution: Hallett 13 Ultraviolet System with Crossfire Technology and filters. Results: Purified water from lake, improved taste and eliminated bio-film
Cottage Retreat Provides Pure, Safe Water for Everyone
In 2001, the Minnesota State Fair built a 50-foot by 80-foot state-of-the-art barn, which would feature cows, pigs and lambs. The Miracle of Birth Center was built to reflect modern animal production practices in the existing Children's Barnyard at the fairgrounds. Pregnant cows, pigs and lambs were transported from out state Minnesota for the special birthing exhibit in the Children's Barnyard.
Filtered water helps birthing animals at Minnesota State Fair
Over the years, water quality has noticeably deteriorated worldwide. This decline in water quality stems from the extreme demand on very limited natural resources. Various principles of filtration are used in many applications to improve the general quality of the water that is being treated. Along with screen filters, coagulation/filtration, neutralizing filters, oxidizing filters, clairifying filters and carbon filters are other treatment methods that may be used.
Various filter technologies stretch limited natural resources for drinking water