LSPA 4th Annual Environmental Symposium

MassDEP continues to evaluate PFAS topics of interest through a range of research initiatives. This presentation will describe several ongoing projects that are relevant to PFAS investigation and remediation at contaminated sites under the MCP.

1. Evaluation of analytical methods as they relate to measuring PFAS in different environmental matrices: As a part of various source discovery efforts, MassDEP has collected samples for PFAS analysis by non-target methods, such as a total oxidizable precursor assay, to assess the utility of such methods during different stages of site characterization. MassDEP has also tested screening methods to reduce analytical costs. This presentation will discuss the different methods and MassDEP’s findings.
2. Treatment of private well water using point-of-entry treatment (POET) systems: MassDEP has evaluated extensive data from existing POET systems and presented on those findings in previous years. This presentation will focus on the performance of alternative adsorbents for PFAS treatment and provide an update on our evaluation of granular activated carbon (GAC)-based systems.
3. Treatment of private well water using point-of-use (POU) treatment systems: In November 2025, MassDEP installed five POU treatment systems in homes with PFAS-impacted private wells as a pilot study. The presentation will describe the filter selection process, installation logistics and cost, and preliminary results.
4. Diffuse PFAS plumes in non-sewered areas: MassDEP has conducted source discovery efforts in areas with residential septic systems and consistently detected PFAS at levels of regulatory significance. The presentation will include a brief discussion of the types and concentrations of PFAS found in areas where septic systems are thought to be the sole source of PFAS to the environment.

The course will conclude with a question-and-answer session.