PFAS Information

Per- and Polyfluoroalkyl Substances (PFAS) |

Test results for Pepperell wells are shown below. Results are posted as we receive them. Due to increased demand and volume of testing for PFAS, lab results are taking longer than usual to return.

The Nashua Road well is inactive and testing is not required by the DEP. The Bemis Road Well is tested yearly per the DEP. 

  1. 2024 Monthly
Sample Source Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec
Bemis** N/A N/A                    
Jersey 12.5 25.5                    
Nashua* N/A N/A                    
  1. 2023 Monthly
Sample Source Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec
Bemis** N/A N/A N/A N/A N/A N/A <2.00 N/A N/A N/A N/A N/A
Jersey 10.4 10.3 14.6 12.5 15.2 no test 14.0 14.5 12.4 8.38 12.9 15.4
Nashua* N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
  1. 2022 Quarterly
  2. 2022 Monthly
Sample source Q1 Q2 Q3 Q4
Bemis** N/A N/A N/A <2.0
Jersey 9.7 13.2 12.23 12.2
Nashua* 12.94 23.0 30.4 N/A
  1. 2021 Quarterly
  2. 2021 Monthly
Sample source Q1 Q2 Q3 Q4
Bemis** N/A N/A N/A N/A
Jersey 12.3 9.96 11.19 10.43
Nashua* 23.3 17.31 23.4 12.99

Values are in ppt (parts per trillion)
* Nashua Road well is offline
** Bemis Road well is tested yearly

PFAS in Pepperell


  • Testing as required by DEP
  • Continued public education

November 2023 

April 2023

February 2023 

January 2023

October 2022 

May 2022

  • Outdoor watering ban imposed May 1 - October 31, 2022

April  2022 

July 2021

  • Drought status / outdoor watering ban lifted, indicating increased groundwater recharge and less system strain

June 2021

  • Greensands plant online and Bemis wells returned to service, reducing strain on Jersey wells

May 2021

April 2021

  • Confirmatory testing performed at Nashua well brought the two-month average to 22 ppt.
  • Nashua Road well withdrawal reduced to backup only, placing added strain on Jersey Street wells during seasonal drought; Bemis wells still offline during Greensands treatment plant wrap-up

March 2021

  • Routine sampling detected PFAS levels at the Nashua Road well in excess of the 20 ppt limit established by MassDEP in October 2020, but below the 70 ppt limit set by EPA. 

What are PFAS and why are they a problem?

Per- and polyfluoroalkyl substances (PFAS) are a family of chemicals used since the 1950s to manufacture stain-resistant, water-resistant, and non-stick products. PFAS are widely used in common consumer products as coatings, on food packaging, outdoor clothing, carpets, leather goods, ski and snowboard waxes, and more.

Certain types of firefighting foam—historically used by the U.S. military, local fire departments, and airports to fight oil and gasoline fires—may contain PFAS.

PFAS in drinking water is an important emerging issue nationwide. Because PFAS are water soluble, over time PFAS from some firefighting foam, manufacturing sites, landfills, spills, air deposition from factories and other releases can seep into surface soils. From there, PFAS can leach into groundwater or surface water, and can contaminate drinking water. PFAS have also been found in rivers, lakes, fish, and wildlife.

PFAS stay in the environment for a long time and do not break down easily. As a result, PFAS are widely detected in soil, water, air, and food. Some PFAS can accumulate in the food chain. Exposure can occur when someone uses certain products that contain PFAS, eats PFAS-contaminated food, or drinks PFAS-contaminated water. When ingested, some PFAS can build up in the body and, over time, these PFAS may increase to a level where health effects could occur.

Studies indicate that exposure to sufficiently elevated levels of certain PFAS may cause a variety of health effects including developmental effects in fetuses and infants, effects on the thyroid, liver, kidneys, certain hormones and the immune system. Some studies suggest a cancer risk may also exist in people exposed to higher levels of some PFAS. Scientists and regulators are still working to study and better understand the health risks posed by exposures to PFAS, and MassDEP is following developments in this burgeoning area closely.

Additional Information

Mass DEP PFAS Details

MassDEP PFAS fact sheet


What about bottled water?

What does 1 ng/L or part per trillion look like?

Please visit the PFAS Task Force page for more information on this group. PFAS Task Force