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Current IssueFEBRUARY 2015: ISSUE 57, NUMBER 2
Cover Stories
WQA Aquatech Pre-show Guide
 Pages: 34 - 36
WQA Aquatech USA is a confluence of the influential people, technological innovations, learning and networking opportunities relevant to the water improvement industry. 
 
Principles of Filtration: How do Filters Filter Anyway?
by Larry Henke  Pages: 38 - 44
Filtration has long been an important technique in water treatment. It’s used to remove iron deposits from water, to clear up waters turbid from silt, inorganic sediments and biological materials, both living and decomposing.  
 
Features
Softener Efficiency — It's Not Just about the Salt!
by C.F. ‘Chubb’ Michaud, CWS-VI  Pages: 46 - 50
Water softener efficiency is a term generally used to rate a water softener by the relationship to its recovered capacity per pound of salt (NaCl) used in regeneration.  
 
Self-regenerating Water Softener Rebates and Bans Update
by H. Martin Jessen and Michael T. Mecca  Pages: 52 - 56
Several communities are still actively taking action to regulate self-regenerating water softeners (SRWS) to reduce salinity levels in wastewater, which in turn, is causing high water treatment costs or discharge issues. 
 
Columns
Dealer Dynamics: Responsible Water Stewardship
by Greg Reyneke, CWS-VI  Pages: 16 - 18
Potable water is arguably a nation’s most valuable strategic resource. Every drop of water that we use has a value of time, energy and human capital attached to it. 
 
Dealer Profile: Michiana Water Conditioning Makes Smaller Look Very Successful
by Denise M. Roberts  Pages: 58 - 60
Joseph Ayrea and his wife Barb launched family-owned and operated Michiana Water Conditioning in 1974, with a small storefront in downtown Elkhart before moving to a larger location in the late 1970s.  
 
Water Matters: Efficiency of Water Softeners under NSF/ANSI 44
by Rick Andrew  Pages: 62 - 64
In this day and age of potential bans on water softeners due to concerns about salinity, efficiency is a very hot topic. But one might wonder,... 
 
On Tap: Human Perception is a Failed Indicator of Water Quality Concern
by Kelly A. Reynolds, MSPH, PhD  Pages: 66 - 68
More than 15 million Americans routinely consume drinking water from a private groundwater source. Private drinking water wells are generally sourced by groundwater supplies but are still subject to... 
 
Viewpoint: February 2015
by David Westman  Pages: 10
Dear Readers, It’s my distinct pleasure to continue a long-standing tradition in the partnership between the Water Quality Association and Water Conditioning & Purification International by writing the February edition of Viewpoint.