MassDEP Testing Private Wells for PFAS

Recently, MassDEP launched the Private Wells PFAS Sampling Program, with the goal of testing 40 wells within each of the 81 Massachusetts municipalities where 60% or more of residents get drinking water from private wells. While some of the wells to be tested will be part of a specific selection process, well owners may also request free testing on a first-come, first-served basis.

If another Potentially Responsible Party for the contamination is not identified, there may be legal and financial implications for homeowners and private well owners if PFAS are found above the state Maximum Contaminant Level (MCL) of 20 parts per trillion (ppt):

  • Resampling and retesting may be required, with possible assessment and cleanup actions initiated by MassDEP.
  • A notification of an exceedance of a Reportable Concentration will be automatically made to MassDEP; this notification may trigger additional responsibilities and timelines under Chapter 21E and the Massachusetts Contingency Plan.
  • Depending on the detected PFAS concentration, MassDEP will work with homeowners to ensure their drinking water is safe by providing bottled water or assisting with the installation of a drinking water treatment system.