PFAS Information

PFAS Fact Sheet PDF

June 2022 Update:

EPA released revised Health Advisories on four (4) PFAS compounds based on information on lifetime exposure. These advisories are non-enforceable and non-regulatory.

Connecticut Department of Public Health (DPH) also released updated guidance with Action Levels for four (4) individual compounds. These new Action Levels replace the previous Action Level of 70 parts-per-trillion, ppt.

New Action Levels are:

PFAS Action Levels





More information is available through resources below and a new DPH PFAS webpage at:

Groton Utilities no longer conducts well water testing, however more information specific to private wells may be accessed at:

February 2022 Update:

As part of Safe Drinking Water Act the EPA coordinates the Unregulated Contaminant Monitoring Rule (UCMR) program. Every five (5) years drinking water companies are required to collect samples of the drinking water that are analyzed for priority unregulated contaminants.

Analysis from these samples provide the EPA with scientifically-valid data on these contaminants that are currently unregulated in drinking water. The data improves EPA’s understanding of frequency at which they are found and at what levels and helps ensure science-based decision making.

Samples will be collected during 2023-2025.

Once we have collected samples for UCMR 5 GU will share that data in our Water Quality Report and on GU’s website detailing Perfluorinated Chemical testing.

PFAS Sampling Results




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Groton Utilities is partnering with a professional engineer and technical consultant and developing a pilot treatment project, with Department of Public Health approval, for remediation in an area of our watershed with higher levels of PFAS.