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Baltimore’s water system contains PFAS chemicals at levels above new EPA health advisory

Jun 24, 2022

Baltimore’s water system, which serves 1.8 million homes and businesses in the city and Baltimore County, contains measurable levels of so-called “forever chemicals” that the federal Environmental Protection Agency said last week pose health risks even at minute levels.

The chemicals known as PFAS, used in firefighting foams and in consumer products for their nonstick and stain-resistant properties, were found in the system at a concentration of 4.93 parts per trillion, according to a city Department of Public Works report.

That level is well below a previous health advisory threshold, and below PFAS concentrations recently found at dozens of other sites around Maryland.

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