What is PFAS?
Water suppliers
PFAS value per supplier, 2023–2025. EPA limit — 4 ppt (0.004 µg/L) for PFOA and PFOS, set in 2024. Suppliers that detected PFOA or PFOS
are highlighted and listed first. “Not detected” means the contaminant was measured but
not found.
| Supplier | City | Population | PFAS (ug/L) |
|---|---|---|---|
| Hudson Water Dept | Hudson | 16,700 | 0.0090 µg/L |
| Salem Water Dept | Salem | 21,000 | 0.0085 µg/L |
| Rye Water Dist | Rye | 4,300 | 0.0083 µg/L |
| Litchfield | Litchfield | 6,920 | 0.0081 µg/L |
| Seabrook Water Dept | Seabrook | 14,000 | 0.0080 µg/L |
| Hampstead Area Water | Hampstead | 7,153 | 0.0075 µg/L |
| Portsmouth Water Works | Portsmouth | 33,000 | 0.0070 µg/L |
| Jaffrey Water Works | Jaffrey | 3,800 | 0.0066 µg/L |
| Pembroke Water Works | Pembroke | 5,200 | 0.0065 µg/L |
| Londonderry | Londonderry | 6,255 | 0.0064 µg/L |
| Exeter Water Dept | Exeter | 12,236 | 0.0060 µg/L |
| Little Pond Estates | Bedford | 3,000 | 0.0054 µg/L |
| Manchester Water Works | Manchester | 123,500 | 0.0050 µg/L |
| Central Hooksett Water Pct | Hooksett | 4,650 | 0.0049 µg/L |
| Derry Water Dept | Derry | 17,370 | 0.0046 µg/L |
| Pennichuck Water Works | Nashua | 88,853 | Not detected |
| Concord Water Dept | Concord | 44,215 | Not detected |
| Keene Water Dept | Keene | 30,000 | Not detected |
| Dover Water Dept | Dover | 29,000 | Not detected |
| Merrimack Village Dist | Merrimack | 25,500 | Not detected |
| Rochester Water Dept | Rochester | 25,000 | Not detected |
| Laconia Water Works | Laconia | 17,125 | Not detected |
| Unh/Durham Water Sys | Durham | 16,000 | Not detected |
| Lebanon Water Dept | Lebanon | 13,600 | Not detected |
| Somersworth Water Works | Somersworth | 12,200 | Not detected |
| Pease Trade Port | Portsmouth | 9,900 | Not detected |
| Hanover Water Dept | Hanover | 9,600 | Not detected |
| Berlin Water Works | Berlin | 9,575 | Not detected |
| Milford Water Utilities Dept | Milford | 9,500 | Not detected |
| Claremont Water Dept | Claremont | 9,000 | Not detected |
| Franklin Water Works | Franklin | 7,200 | Not detected |
| Plymouth Vlg Water and Sewer | Plymouth | 6,700 | Not detected |
| Littleton Water and Light | Littleton | 6,500 | Not detected |
| Wolfeboro Water and Sewer | Wolfeboro | 6,000 | Not detected |
| North Conway Water Pct | Conway | 5,500 | Not detected |
| Newmarket Water Works | Newmarket | 5,030 | Not detected |
| Newport Water Works | Newport | 5,000 | Not detected |
| Peterborough Water Works | Peterborough | 4,500 | Not detected |
| Lower Bartlett Water Pct | Bartlett | 3,850 | Not detected |
| Penacook Boscawen Water Pct | Boscawen | 3,800 | Not detected |
| Bristol Water Works | Bristol | 3,575 | Not detected |
| Village Dist of Eastman | Grantham | 3,400 | Not detected |
| Raymond Water Dept | Raymond | 3,300 | Not detected |
| New London Springfield Water | New London | 3,250 | Not detected |
| Village District of Eidelweiss | Madison | 1,200 | Not detected |
| River Run Condos | Bartlett | 750 | Not detected |
| Farley Rd Estates | Nashua | 85 | Not detected |
| Saco River Forest | Conway | 63 | Not detected |