New Report: Unregulated Contaminants Common in Drinking Water
2013 12 05

By Brian Bienkowski | Common Dreams

Traces of 18 unregulated chemicals were found in drinking water from more than one-third of U.S. water utilities in a nationwide sampling, according to new, unpublished research by federal scientists. Included are 11 perfluorinated chemicals, an herbicide, two solvents, caffeine, an antibacterial compound, a metal and an antidepressant.

Researchers from the U.S. Geological Survey and the Environmental Protection Agency analyzed single samples of untreated and treated water from 25 U.S. utilities that voluntarily participated in the project.

Twenty-one contaminants were detected – mostly in low concentrations of parts per trillion – in treated drinking water from at least nine of the utilities. Eighteen of the chemicals are not regulated under the federal Safe Drinking Water Act so utilities do not have to meet any limit or even monitor for them.

“The good news is the concentrations are generally pretty low,” said Dana Kolpin, a research hydrologist with the USGS who participated in the study.

“But,” he added, “there’s still the unknown. Are there long-term consequences of low-level exposure to these chemicals?”

For many of the contaminants, little is known about any potential human health effects of low doses. But one of the perfluorinated compounds, known as PFOA, has been linked to a variety of health problems, including cancer, among people in communities where water is contaminated by a chemical plant in West Virginia.

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Read the full article at: commondreams.org




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