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Current IssueSeptember 07, 2008
 

This column appears irregularly throughout the year.

Ask the Expert: August 2008   August 2008
Ask The Expert Question 3, July 2008   July 2008
Ask The Expert Question 2, July 2008   July 2008
Ask The Expert Question 1, July 2008   July 2008
Whole-house RO system with copper pipes   February 2008
Practical or aesthetic effects of both low or high pH   February 2008
Testing the condition of membranes   February 2008
Hollow fiber MF and UF membrane treatment options   August 2007
Nitrate removal with nanofiltration   August 2007
Ozone concentration in distilled water   August 2007
High iron content in exit stream   June 2007
Testing for tannins   June 2007
Pool salt levels   March 2007
How to test pool salt   March 2007
How often to test   March 2007
TDS and salt levels   March 2007
Health effects from deionized water   July 2005
Declining water level   March 2005
Follow-up: November   February 2005
Well water is too soft   January 2005
MSC or Certification exams   December 2004
water softening equipment   November 2004
ice maker filters   November 2004
ozone   October 2004
hard water   September 2004
Distilled water & plastic; storage tips for bottlers   July 2004
RO choices   June 2004
Blue-green water   June 2004
RO choices   May 2004
Removing TCE   May 2004
Treating humidifier water   April 2004
Pump replacements   April 2004
Filters: Double or nothing   March 2004
Cooler cleaning   March 2004
Peroxide dosing?   February 2004
Pool water silverization   February 2004
RO & UV in Malta   February 2004
Overdrawing requires new valve   January 2004
Coconut and carbon   January 2004
Ozone and food processing   January 2004
Desalination at larger scale   January 2004
Hot and cold of lime softening   August 2003
Bypassing salt?   August 2003
Extending RO membrane life   July 2003
No-salt softening   July 2003
Pool advice   July 2003
Soda ash as a regenerant   July 2003
Journals for `air purification`   July 2003
Home drinking water   July 2003
Under the bamboo tree   May 2003
Principles of softening   April 2003
Two 500-gallon Water Buffalo   February 2003
Silica & RO fouling   February 2003
Determining proper chlorine levels   January 2003
A question of pH   December 2002
POU/POE by the numbers?   December 2002
Drinking water filtration system for a community of 10K   December 2002
Aggressive RO water   October 2002
No fluoride, no RO   October 2002
Extra oomph for spring water?   October 2002
UV & lake water   October 2002
Trolling for poll results   September 2002
Recycling data   September 2002
No fluoride, no RO   August 2002
Torn up over tannins   August 2002
Reducing septic system impacts   July 2002
The long and short of softening   July 2002
Clamp-on water treatment   June 2002
Water software 101   May 2002
Per capita water needs   May 2002
ﾑCross into the Blueﾒ on the cutting edge   April 2002
Iron in my water   April 2002
Water softener comparison   April 2002
Comparison of home water softeners   March 2002
Recycling water from your ACvv   March 2002
Distilled vs. reverse osmosis   February 2002
E. coli & coliform   January 2002
Making money the object   January 2002
Whatﾒs the best?   January 2002
Oxygenated bottled water?   October 2001
Well treatments other than chlorine   October 2001
More on RO fouling   September 2001
Revisiting iron in water   August 2001
Dissolved oxygen, health and water   August 2001
Removing microsporidia   July 2001
In search of water efficiency   July 2001
Ultraviolet `sterilizer`   June 2001
Revisiting iron in water   June 2001
Finding the Light   June 2001
Blue or green, copper often the culprit   May 2001
RO fouling in Tanzania   May 2001
Affordable water for the developing world   May 2001
Carbon and chlorine   April 2001
A `Carefreeﾒ response to Expert answer   April 2001
Getting educated on water   April 2001
UV & materials selection   April 2001
Getting started in the Sunshine State   March 2001
Concerning water recycling   February 2001
Softeners and the environment   February 2001
Tracking softener sales   February 2001
Getting started in the Sunshine State   February 2001
Canada: UV & Log Reduction   February 2001
Industrial/Domestic Water Treatment   January 2001
Carbon and Ozone   January 2001
Filtration and Small Systems   January 2001
Sizing a Community Well   January 2001
Conventional vs. recycled water treatment   December 2000
Treating recycled cooling water for bottles and cans   December 2000
Spot-Free Rinse Water for Bus Washer -- 3 Answers   December 2000
Three Questions on Corrosivity: Reluctant Guinea Pigs   November 2000
Three Questions on Corrosivity: Wary of Aluminum   November 2000
Three Questions on Corrosivity: ROs and Copper   November 2000
Science Fair Project #2: How do You Do It?   October 2000
Science Fair Project #1: Getting the Dirt Out   October 2000
Basic Home Water Treatment #1: Scandinavia and UV   September 2000
Basic Home Water Treatment #2: Filtration, etc., in Israel   September 2000
MTBE and Whole House Treatment in Two U.S. Regions: Northeast   August 2000
MTBE and Whole House Treatment in Two U.S. Regions: Midwest   August 2000
Sucking on a Straw   July 2000
Dialysis: Use of Softener with Mixed Bed DI   July 2000
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