April 2007
Volume 49 Number 4
 
Cover
Chlorine Removal - Showerhead Filters
by Kevin Wong
The Canadian Water Quality Association (CWQA) and its members have been flooded with calls about chlorine in home water since the American Journal of Epidemiology put out an article on chlorinated water exposure and the increased cancer risk it can pose in its January 2007 issue.  read more
 
The Latest in Water Treatment Instrumentation
by Peter S. Cartwright
The concern about adequate supplies of safe drinking water is one of the worlds most pressing issues today. Regulations drive the water treatment industry and as new, health-related contaminants are being identified and/or the maximum allowable levels of...  read more
 
A Glass Half Full
by Morton Satin
In Samuel Taylor Coleridge's Rhyme of the Ancient Mariner, the old sailor narrates the woes of his recent travels, 'Water, water, everywhere, Nor any drop to drink.' He may have been describing the account of a mythical voyage, but his words reflect one of our futures greatest challenges-access to quality water.  read more
 
Features
Effective Mixing of Stored Potable Water Deters Harmful Disinfection Byproducts
by Robert Nobile
Increasingly stringent US EPA drinking water rules have led to the development of a new water circulation technology aimed at preventing the deterioration of water quality in potable water storage reservoirs for both chloramine and chlorine systems.  read more
 
The Basics of Ion Exchange and Water Chemistry, Part 2: The Water Analysis
by C.F. 'Chubb' Michaud
In Part 1 of this two-part series, we discussed basic chemistry and ionization and the value of the Periodic Table of Elements to the water treatment professional. In Part 2, we examine the proper use of a water analysis and pitfalls to avoid in deciphering it.   read more
 
Web Exclusive
Columns
Water Business Springs from a Georgia Homestead
by Denise M. Roberts read more
 
John Grayson's Baby Grows Up
by As Told To WC&P Staff read more
 
Classic Literature - Moby Dick, A Tale of Two Cities and My New Water Treatment System Manual?
by Rick Andrew read more
 
Water Quality and Acceptable Risk - Are We Safe Enough?
by Kelly A. Reynolds, MSPH, Ph.D. read more
 
Viewpoint: Was it good for you?
by Karen R. Smith read more