November 2005 Volume 47 Number 11
Cover
	Ion Exchange Capacity and Systems Rating by C.F. (Chubb) Michaud read more   Ion Technology Dramatically Improves Village`s Water Quality by Joseph Sanchez read more   Pool and Spa 101 by Joe Sweazy and Drew Chuppe read more   Thorough Mixing Crucial to healthy Potable Water Tanks by Ed Sullivan read more
Features
	Rocky Mountain Water Quality Conference Show Review by Peter Waelti read more   Katrina & Rita: How Our Industry Responded by WC&P Staff read more   EWQA 2005 Annual Conference and Trade Show Review by Karen R. Smith read more
Web Exclusive
	Focus Update: Hot Tub Lung by WC&P Staff Is there a danger lurking in your customers hot tubs? The answer is yesone that causes shortness of breath, pneumonia-like symptoms and in some extreme cases, can be fatal.   read more
Columns
	Viewpoint: Rising to the occasion read more   Dealer Alert: Preventing Recreational Water Illness read more   Living History: Bob Ruhstorfer and the WQA History Project read more   Certification of Water Treatment Systems for the Food Service Industry read more   Returning and Rebuilding: Minimizing Exposure Risks to Floodwater Contaminants read more