Active Buyer's Guide: Water Filters - Helps user decide what to buy based on input of preferences. Includes specifications, features, reviews, comparisons. www1.activebuyersguide.com/abg/nav/StartGuide.cfm?CatID=37&PID=0X1X50X1660X6af&RefID=0
Ahdorma: Water Distillers - Explains how water distillers purify water. thewatersite.com/how_they_work_water_distillers.htm
Ahdorma: Water Filters - Explains the different methods and technologies used in water filters. thewatersite.com/how_they_work_water_filters.htm
Ahdorma: Water Purifiers - Explains how water purifiers use reverse osmosis to purify water. thewatersite.com/water_purifiers_and_reverse_osmosis.htm
Ahdorma: Water Softeners - Explains how water softeners work. thewatersite.com/how_they_work_water_softeners.htm
Allergy Buyer Club: Water Purifiers - Evaluates brand name appliances as to effectiveness in helping users control allergies. www.stores.yahoo.com/allergybuyersclub/waterpurifiers.html
Ask The Water Man - List of impurities and the water filters that will remove them. Sales site providing basic information on a number of water filtering problems. askthewaterman.com
ConsumerReview: Water Filters - Consumer-generated product reviews, ratings, prices for brands and models. www.consumerreview.com/categories/showcategories.asp?cardsubcatid=126&ConsoleID=0&AlphaID=&orderby=0&top=0
Do Not Buy Rainsoft Products - Relates one business owner's experience with Birmingham Water Solutions. www.geocities.com/donotbuyrainsoft
Epinions: Water Filters - Consumer-generated reviews, buying tips and advice, ratings, price information, and searchable in a variety of ways from price to product type. www.epinions.com/hmgd-Small_Appliances-All-Water_Filters
Home Water Treatment Using Activated Carbon - Discussion and guidelines from a 1997 article from the Michigan State University Extension. www.msue.msu.edu/msue/imp/modwq/wq239201.html
HowStuffWorks: Charcoal Filters - What is activated charcoal and why is it used in filters? www.howstuffworks.com/question209.htm
HowStuffWorks: Reverse Osmosis - How does reverse osmosis work to purify or filter the water? www.howstuffworks.com/question29.htm
