The Town of Barnstable Department of Public Works received results this morning from recent testing of the Hyannis Water System for perfluorinated compounds. The test results show that the levels of perfluorinated compounds in the system are below the U.S. Environmental Agency’s Health Advisory level of .07 parts per billion.
On May 19, 2016, the EPA, without notice, lowered the Health Advisory level for PFC’s in drinking water from 0.2 parts per billion to 0.07 parts per billion, a 65% reduction. The Hyannis Water System responded by taking two supply wells off-line, re-establishing an interconnection with the Yarmouth Water Department, supplying bottled water, purchasing a third carbon filtration system for the Mary Dunn wellfield, flushing the system, and conducting extensive testing.
According to Daniel W. Santos, P.E., Town of Barnstable’s Director of Public Works, “We are very pleased with the latest test results. The Hyannis Water System now fully complies with all standards of the Massachusetts Department of Environmental Protection and the USEPA. We will continue to manage and monitor the water system to insure that our customers are receiving safe drinking water.”
The source of the perfluorinated contamination in the Mary Dunn wellfield is the Barnstable County Fire Training Academy, where the use of firefighting foams over many decades resulted in contamination of the underlying groundwater aquifer. The Town of Barnstable will continue to work with Barnstable County and State regulatory agencies over the upcoming months to remediate the contamination of the wellfield.
The Hyannis Water System serves more than 7,000 residential and commercial customers primarily in Hyannis, Hyannisport, and West Hyannisport .