July 2007
Volume 49 Number 7
 
Cover
What You Need to Know About RO Feedwater Characteristics
by Robert Slovak
Knowledge of the source, the treatment and the physical and chemical quality (i.e., the characteristics) of the water supply is essential for the long-term, trouble-free operation of small commercial/industrial RO systems.  read more
 
Roving Softening Truck Keeps Phoenician Pools Clear
by David Morgan and Ken Scheer
While many areas of the country are plagued with hard water, the southwest United States has some of the hardest water in the nation. This is even more problematic because much of the southwest is in a decade-long drought and the high temperatures mean swimming pools are claiming much of the regions water.   read more
 
Foulants and Cleaning Procedures for Composite Polyamide
by Kazuhito Kouno
During normal operation over a period of time, RO membrane elements are subject to fouling by suspended or sparingly soluble materials that may be present in the feed-water. Common examples of foulants: ...  read more
 
Features
Singapore Closes the Loop
by Karen R. Smith
As water scarcity increases in many parts of the world, various possible solutions and strategies are being debated. Here in the States, at some point in most water strategy meetings, the idea of one water agency managing everything from...  read more
 
The Importance of WQA Professional Certification
by Tanya Lubner
Water Quality Association WQA) professional certification is more than a badge of honor. Its more than the designation placed on business cards or the statements made to customers. It establishes your credibility and expertise because it is an independent verification of your industry knowledge.   read more
 
Web Exclusive
Columns
Dealer Profile: Absolutely Fabulous! Absolute Water Management, Inc.
by Kena Gibson read more
 
Green is Very Green Indeed for GE
by Karen R. Smith read more
 
The Role of Reverse Osmosis in Reducing Arsenic Exposures
by Kelly A. Reynolds, MSPH, Ph.D. read more