April 2009
Volume 51 Number 4
Building a Filter Defense Against Zebra and Quagga Mussels
by Jim Lauria  Pages: 24-26
Tiny mussels can create massive problems for intake structures, valves, pumps, screens and other water infrastructure around the US. Some filtration systems can...  read more
Using Media to Remove Fluoride from Drinking Water Sources
by Frank DeSilva  Pages: 28-30
The US EPA limit for fluoride in water is four mg/L, with a secondary (recommended) level of two mg/L to protect against cosmetic dental effects linked to excessive fluoride consumption.   read more
GRPD Comparison of Unused and Used Drinking Water Activated Carbons
by Henry Nowicki, Wayne Schuliger, George Nowicki and Barbara Sherman  Pages: 32-37
Granular activated carbons (GAC) are the best available technology (BAT) to purify and protect global drinking water supplies. GAC can be manufactured from a wide variety of natural resource materials.   read more
Rainwater Harvesting: An Untapped Resource
by Peter S. Cartwright, P.E.  Pages: 38-41
The collection of rainwater as a source of relatively clean water has been a common practice of humankind since the dawn of civilization. Before the development of any...  read more
NSF DWA and DWTU Certification: A Bill of Rights
by Margaret H. Whittaker  Pages: 40-41
Are you interested in getting your plumbing product or drinking water treatment unit certified against an NSF drinking water additives (DWA) or drinking water treatment units (DWTU) standard?  read more
2009 Technical Review Committee Insights: Gary Battenberg
by Donald A. Mounce  Pages: 46-48
Gary Battenberg is with Hague Quality Water International located near Columbus, OH, holding the position of Technical Director since 1997. He has over 26 years experience in the field of domestic, commercial and high-purity water treatment processes.  read more
Web Exclusive
Dealer Profile: WaterTree--Seven Decades of Dedication to Water Quality
by Denise M. Roberts  Pages: 42-45 read more
Executive Insight: Environmental World Products LLC--New Kids on the Global Block
by Donald A. Mounce  Pages: 50-51 read more
Water Matters: Mechanical Filtration Performance Testing of POU/POE Systems
by Rick Andrew  Pages: 52-54 read more
On Tap: Recreational Waterborne Disease at an All-Time High
by Kelly A. Reynolds, MSPH, Ph.D.  Pages: 56-58 read more
Viewpoint: Only through our past  Pages: 6 read more