PFNA in Massachusetts well water
In Massachusetts, <1% of 1,793 private wells tested between 2020 and 2023 had PFNA above the EPA limit (10 ng/L), according to MassDEP.
PFNA is a long-chain forever chemical found near industrial sites and firefighting foam. It is linked to immune and developmental effects and high cholesterol. New Hampshire set its own limit in 2019.
Check your PFNA number
Type the value from your lab report. It is compared to the EPA limit and the EPA limit, the same way the full interpretation does it.
Test your Massachusetts well for PFNA
Certified lab analysis of your own tap water, bottles and prepaid return shipping included. The Essential well panel covers arsenic, uranium, nitrate, lead, copper, manganese, iron, sodium and bacteria; radon and PFAS are add-ons.
Order the Tap Score well water test kit, from $209Already tested? Upload the report
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Systems that remove PFNA
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Some links below are affiliate links. If you buy through one, the merchant pays us a commission at no extra cost to you. It does not change which products we list or what the data says.
For PFNA
Under-sink reverse osmosis system
under-sink or countertop, about $300
Look for NSF/ANSI 58 certification listing the contaminant you need removed.
For PFNA
Whole-house PFAS carbon system
whole-house, at the point of entry, about $3,000
Granular activated carbon certified to NSF/ANSI 53 for PFOA and PFOS; replace media on schedule.
For PFNA
Aquasana HealthShield whole-house filter
whole-house, at the point of entry, about $2,099
Whole-house carbon system the maker certifies to reduce PFAS (PFOA and PFOS) and VOCs at every tap; a UV option adds bacteria protection.
Rather have it installed and sized for your well? Book a free in-home water test with a licensed local company.
Where to get a well tested for PFNA in Massachusetts: certified labs, state programs and prices.
By county, from homeowner tests
Share of private wells above the state guidance level (10 ng/L) in tests homeowners sent to the state lab, 2020 to 2023.
Towns with the highest share above the state level
- Shutesbury, Franklin County2% of 46 wells
- Carlisle, Middlesex County0% of 55 wells
- Tyngsborough, Middlesex County0% of 51 wells
- Stow, Middlesex County0% of 50 wells
- Boxborough, Middlesex County0% of 49 wells
- Wellfleet, Barnstable County0% of 48 wells
- Nantucket, Nantucket County0% of 48 wells
- West Tisbury, Dukes County0% of 46 wells
- Lakeville, Plymouth County0% of 45 wells
- Rehoboth, Bristol County0% of 44 wells
- Westport, Bristol County0% of 43 wells
- Leverett, Franklin County0% of 43 wells
- Sherborn, Middlesex County0% of 43 wells
- Wendell, Franklin County0% of 41 wells
- Pelham, Hampshire County0% of 39 wells
- New Salem, Franklin County0% of 39 wells
- Carver, Plymouth County0% of 36 wells
- Truro, Barnstable County0% of 35 wells
- Hampden, Hampden County0% of 35 wells
- Boxford, Essex County0% of 35 wells
- Richmond, Berkshire County0% of 34 wells
- Westhampton, Hampshire County0% of 34 wells
- Granby, Hampshire County0% of 33 wells
- Newbury, Essex County0% of 32 wells
- Harvard, Worcester County0% of 32 wells
Sources
- MassDEP Private Well PFAS Sampling Program: Private well PFAS results from the Massachusetts Department of Environmental Protection free sampling program, 2020 to 2023, one anonymized row per well. Shares are against the EPA limit for each compound (4 ng/L for PFOA and PFOS, 10 ng/L for PFHxS and PFNA). Massachusetts applies its own PFAS6 standard of 20 ng/L to the sum of six compounds; that sum is not a contaminant page here. Zero means not detected. Retrieved September 16, 2026.
Analysis: PFAS in private wells: known sources versus routine testing, from the same public records.