In 2007, the NSF Intl. Drinking Water Treatment Unit Joint Committee revised the NSF/ANSI Standard 53 protocol for pH 8.5 lead reduction based on a substantial amount of research on particulate and colloidal lead. The research conducted by the NSF task group revealed a great deal of inconsistency in the amount of particulate lead formed from batch to batch and from laboratory to laboratory due to the precipitation of this element from the solution.
Testing and developing a lead-reduction filter for gravity pitchers
Driving home from work you happen to notice a lemonade stand. Reminiscing about your childhood days, you pull over and buy two cups. You take a big gulp, which you spit out immediately, realizing it was grapefruit juice, water and salt. A finished product is only as good as its ingredients. Had these little entrepreneurs put a supplier quality management system in place or followed the written recipe, this mistake could have been prevented.
Improving your supplier quality management system
With the recent BP Deepwater Horizon oil rig disaster and the passing of the five-year anniversary for Hurricane Katrina, we are reminded how delicate our ecosystems and water supplies are. But these events occurred in a generalized local area. What about water regulations on an international level?
NSF Intl., as a World Health Organization Collaborating Center, continues to foster the growth and education of the NSF/ANSI Drinking Water Treatment Unit (DWTU) Standards, what they mean and how they may be able to benefit another country.
Tracking the development of international drinking water regulations
Heptachlor epoxide, trichloroethane, aesthetic chlorine, acrylonitrile, TDS, xylenes, lead, arsenic, hexachlorocyclopentadiene … Certainly, some of the chemicals listed above are recognizable not only to you but also to the average consumer. Some of them are recognizable to you, but the average consumer would stumble through their pronunciation. Should you consider certifying the contaminants listed above?
Deciding which contaminant reduction claims to certify
As water coolers evolve to include more complex point-of-use filtration systems, certification becomes increasingly important. Dave Bentley, technical manager for NSF Intl., recently discussed the ins and outs of cooler certification with Water Quality Products Managing Editor Kate Cline.
Kate Cline: Which NSF standards apply to water coolers?
“Arsenic Found in Groundwater.” How many times have you seen that headline? There is no doubt that arsenic has become a common household term, used not only by teenagers studying the periodic table but also by adults who have long forgotten their high school chemistry classes.
In the last 10 years, arsenic has made headlines for various reasons. Most deal with human exposure and its associated risks.
Arsenic is present in natural deposits in the earth. It can enter drinking water supplies from these deposits or from agricultural and industrial activities.
Developing less expensive POE systems for arsenic treatment
NSF Passport Program helps manufacturers gain global market access for water treatment, distribution and plumbing products
NSF Intl. has named Dr. Guy Franklin as the new managing director of the recently launched NSF Passport Program, which helps companies gain global market access for water treatment, distribution and plumbing products.
The program will be eliminated after December 31 of this year
On April 6, the California Department of Public Health (CDPH) announced that it would be abandoning the drinking water unit certification program after Dec. 31 of this year.
The decision came after lengthy discussions with the Water Quality Assn. (WQA) and after the association introduced legislation to turn over certification responsibilities to American National Standards Institute (ANSI)-accredited third-party certifiers such as NSF Intl. and WQA.
Recently I learned that fire hydrants use a color-coding system to indicate the flow rate a hydrant can deliver. Hydrants with light blue-coated bonnets and nozzles deliver the fastest flow rates, 1,500 gal per minute (gpm) or greater, while hydrants with red-coated bonnets and nozzles deliver 499 gpm or less. Coatings are amazing products—not only are they aesthetically pleasing, they also provide surface protection or improvement and can convey important information to the end user.
Limit coating toxicity with proper application
Choosing the right drinking water treatment product is not easy. There are many factors to consider prior to installation. Water characteristics, family members, price and certification by a reputable organization all are important. Share these factors with your clients to help them choose the right treatment system for their homes.
Factors in choosing the right water treatment system