The Water Puzzle: Facts About your drink water. Is a definitive guide to the Safe drinking water act. Printed for the average reader, it explains how the EPA came up with the regulations concerning the various contaminates, and what those contaminated could do. The book explains each facet of drinking water regulated, from the water supplied to your home, to the bottled water you purchase at the local grocery store | The Water Puzzle by Phil Ranieri, Paperback | Indigo Chapters