USA Water Filter Blog

Americans have grown suspicious of tap water quality, yet it’s doubtful many could name a single contaminant they imagine spewing from their faucets. Blind faith once placed in the public water supply is being transferred to bottled water, even though the average citizen probably knows equally little about pollutants that might lurk there, too.

Thanks to the nonprofit organization Environmental Working Group (EWG) for creating the largest-ever national drinking water-quality database, most everyone now can read about the levels and health risks of specific pollutants found in their tap water. Unfortunately, the news is not great.

EWG’s database covers 48,000 communities in 45 states and catalogues millions of water quality tests performed by water utilities between 2005 and 2009. Among the nation’s most populous cities, Pensacola, Florida, Riverside, California and Las Vegas, Nevada were rated the worst for water quality, testing positive for between 33 and 39 different contaminants over five years. Arlington, Texas, Providence, Rhode Island and Fort Worth, Texas ranked best with just four to seven pollutants each. The national average was eight pollutants.

Altogether, 316 different pollutants were detected in U.S. water utilities. Forty-nine of these were measured in one place or another at levels exceeding federally set health guidelines, thereby contaminating the drinking water of over 50 million Americans. Agricultural pollutants, industrial chemicals from factory discharges, and urban storm water runoff were major contributors as were, ironically, chemical residues from water treatment plants.

http://www.emagazine.com/view/?5128

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