The synthetic compounds known collectively as PFAS are contaminating drinking water to varying extents in large cities and small towns, and may cause cancer and other health problems. Drinking water from nearly half of U.S. faucets may be contaminated:
TRAVERSE CITY, Mich. — Drinking water from nearly half of U.S. faucets likely contains “forever chemicals” that may cause cancer and other health problems, according to a government study released Wednesday.
Because the USGS is a scientific research agency, the report makes no policy recommendations. But the information “can be used to evaluate risk of exposure and inform decisions about whether or not you want to treat your drinking water, get it tested or get more information from your state" about the situation locally, said lead author Kelly Smalling, a research hydrologist.
“We should be treating this problem where it begins, instead of putting up a stoplight after the accident," he said. “We should be requiring polluters to treat their own wastes.” Most taps were sampled just once. Three were sampled multiple times over a three-month period, with results changing little, Smalling said.
Positive samples contained as many as nine varieties, although most were closer to two. The median concentration was around seven parts per trillion for all 32 PFAS types, although for PFOA and PFOS it was about four parts per trillion — the limit EPA has proposed for those two compounds.
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