MassDEP and UMass conducted free PFAS testing for a limited number of private wells, focusing on Massachusetts towns where 60% or more of residents are served by private wells. Nantucket was included in this sampling and testing program performed in 2021.
MassDEP selected the wells that were sampled based on priority factors including geographic distribution throughout the town, proximity to potential sources of PFAS, and available funding.
Fourty-one private wells were sampled. Testing results have been posted by MassDEP
https://www.mass.gov/info-details/per-and-polyfluoroalkyl-substances-pfas-in-private-well-drinking-water-supplies-faq (scroll down the webpage to “PFAS Testing in Private Wells” for map and results.
|MassDEP PFAS drinking water standard MCL is 20 ppt for what the regulations call PFAS6, or the sum of six PFAS: perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorohexane sulfonic acid (PFHxS), perfluorononanoic acid (PFNA), perfluoroheptanoic acid (PFHpA), and perfluorodecanoic acid (PFDA), (https://dwp-pfas.madwpdep.org/).|