Drinking Water Quality

Environmental Working Group issued EWG's Drinking Water Quality Analysis and Tap Water Database

"Since 2004, testing by water utilities has found 316 pollutants in the tap water Americans drink, according to an Environmental Working Group (EWG) drinking water quality analysis of almost 20 million records obtained from state water officials.

More than half of the chemicals detected are not subject to health or safety regulations and can legally be present in any amount. The federal government does have health guidelines for others, but 49 of these contaminants have been found in one place or another at levels above those guidelines, polluting the tap water for 53.6 million Americans. The government has not set a single new drinking water standard since 2001.

Water utilities spend 19 times more on water treatment chemicals every year than the federal
government invests in protecting lakes and rivers from pollution in the first place."

Boston came in 5th. :)