Massachusetts PFAS Reports

Throughout the northeast and across the nation, state and local officials, health departments, and water utilities including Aquarion have focused their attention on a group of man-made chemicals called per- and polyfluoroalkyl substances (PFAS) that have been detected in drinking waters, including public and private water supplies, and bottled water.  Some health officials indicate that consumer products, food, and cookware represent the largest exposure of PFAS to people. However, drinking water contaminated with PFAS can also be a source of exposure.

Although Massachusetts and federal health officials have not yet defined the maximum amount of these chemicals that they will allow to be present in drinking water, the U.S. Environmental Protection Agency (EPA) and the Massachusetts Department of Environmental Protection (MassDEP) recommend that the concentration of a group of PFAS compounds in drinking water not exceed 70 parts per trillion (ppt); this limit is referred to as a Health Advisory Level or guideline.

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To ensure the highest quality water for our customers, Aquarion voluntarily tested for PFAS chemicals in all of our water sources. Our latest water sample test results are shown below.  Due to the number of water systems sampling for PFAS and the limited number of laboratories available for testing these compounds, the receipt of results from the laboratory can take upwards of 3 to 4 weeks from the sample date. Sites showing different results for the same date represent the results from different laboratories.


Millbury System PFAS Sampling Results

This past October, we voluntarily sampled water from all three of our water supply well locations in the Millbury system. The initial sampling results that we received from our laboratory on October 21, 2019 indicated that the level of PFAS found in our Oak Pond Well exceeded the Health Advisory Level of 70 ppt. As a result, Aquarion immediately turned off the Oak Pond Well and consulted with MassDEP. Sample results from our two other water sources in Millbury (the Jacques Wells and the Millbury Avenue Well) showed levels of PFAS below the current Health Advisory Level of 70 ppt, as well as below a future 20 ppt guideline now under consideration by MassDEP.  These two water supplies remain in service. Sample results from our initial round of sampling and a second round of confirmation sampling are summarized below.

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Oxford System PFAS Sampling Results

This past October, we voluntarily sampled all three of our water supply well locations in the Oxford system. Sample results showed levels of PFAS below the current Health Advisory Level of 70 ppt, as well as below a future 20 ppt guideline now under consideration by MassDEP. Sample results from our initial round of sampling are summarized below.

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Hingham/Hull/Cohasset System PFAS Sampling Results

This past October, we voluntarily sampled the water entering our distribution system including the Hingham Water Treatment Plant and Cohasset Interconnection. Sample results showed levels of PFAS below the current Health Advisory Level of 70 ppt, as well as below a future 20 ppt guideline now under consideration by MassDEP. Sample results from our initial round of sampling are summarized below.

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