Not Convinced That Tap Water Containing Fluoride, Chlorine And Other Contaminants Is A Major Cause Of Illness And Disease? Then Read:

Fluoride the Aging Factor: How to Recognize and Avoid the Devastating Effects of Fluoride by John Yiamouyiannis, Ph.D:
http://www.amazon.com/Fluoride-Aging-Factor-Recognize-Devastating/dp/0913571032

Your Body's Many Cries for Water by F. Batmanghelidj M.D.:
http://www.amazon.com/exec/obidos/ASIN/0962994235

Don't Drink The Water (without reading this book) The essential Guide to Our Contaminated Drinking Water and What You Can Do About It by Lono Kahuna Kupua A'o:
http://www.amazon.com/exec/obidos/ASIN/096288829x

Water: The Foundation of Youth, Health, and Beauty
by William D. Holloway Jr. and Herb Joiner-Bey N.D.:
http://www.amazon.com/exec/obidos/ASIN/189069438x

The Water We Drink: Water Quality and Its Effects on Health by
Joshua I. Barzilay M.D., Winker G. Weinberg M.D., and J. William Eley M.D.:
http://www.amazon.com/exec/obidos/ASIN/0813526736

The Drinking Water Book: A Complete Guide to Safe Drinking Water by Colin Ingram:
http://www.amazon.com/exec/obidos/ASIN/0898154367

Water: For Health, for Healing, for Life: You're Not Sick, You're Thirsty!
by F. Batmanghelidj M.D.:
http://www.amazon.com/exec/obidos/ASIN/0446690740

Water Wasteland: Ralph Nader's study group report on water pollution by David Zwick with Marcy Benstock:
http://www.amazon.com/exec/obidos/ASIN/0670751693