"U.S. EPA has found 104 chemicals that might require regulations to keep them out of tap water -- the longest list of potential contaminants ever compiled by the agency.

A 1996 law requires EPA to evaluate possible tap-water pollutants every five years and make regulatory determinations for at least five of them.

The new list -- the agency's third -- includes pesticides, commercial chemicals, disinfection byproducts and, for the first time, pharmaceuticals."

Taryn Luntz reports for Greenwire in the New York Times September 23, 2009. [2]