PFAS · New York
PFAS in New York drinking water: EPA’s final survey results
EPA’s national PFAS survey (UCMR 5) tested 322 of the community water systems that serve homes in New York. 97 found at least one of 29 PFAS above the laboratory reporting level, and 30 had a PFOA or PFOS sampling-location yearly average at or above EPA’s 4.0 ppt limit. Samples were collected from January 2023 to June 2026.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
PFPeA was the compound New York community systems found most often: 53 of 322 tested systems measured it above the reporting level. Across the country, 35% of surveyed community systems found at least one PFAS; in New York the share is 30%. The largest New York system with a detection, Suffolk County Water Authority, serves 1,100,000 people and found 10 of the 29 compounds.
Which PFAS were found most often in New York
Each row counts the New York community water systems where that compound was measured above the reporting level at least once. A detection is a measurement, not a violation: most of these compounds have no federal limit.
| Compound | Systems where found | Systems tested | Share |
|---|---|---|---|
| PFPeA | 53 | 322 | 16% |
| PFOA | 41 | 322 | 13% |
| PFHxA | 39 | 322 | 12% |
| PFBA | 38 | 322 | 12% |
| PFOS | 24 | 322 | 7% |
| PFBS | 20 | 322 | 6% |
| PFHxS | 17 | 322 | 5% |
| PFHpA | 14 | 322 | 4% |
| PFNA | 13 | 322 | 4% |
| 6:2 FTS | 8 | 322 | 2% |
| NMeFOSAA | 1 | 321 | 0% |
| PFPeS | 1 | 322 | 0% |
New York systems with the most PFAS found
The 10 surveyed community water systems that found the most different PFAS, with PFOA and PFOS compared to EPA’s 4.0 ppt limits on the yearly average at the highest sampling location. Larger systems come first when counts tie.
| Water system | People served | PFAS found (of 29) | PFOA | PFOS |
|---|---|---|---|---|
| Suffolk County Water Authority NY5110526 | 1,100,000 | 10 | 6.1 ppt at or above the MCL | 12.1 ppt at or above the MCL |
| Veolia Water New York NY4303673 | 270,000 | 10 | 10.0 ppt at or above the MCL | 3.4 ppt below the MCL |
| Yeshiva Farm Settlement NY5903150 | 300 | 10 | 25.0 ppt at or above the MCL | 94.5 ppt at or above the MCL |
| Wa of Western Nassau NY2902830 | 120,000 | 8 | 5.0 ppt at or above the MCL | 3.1 ppt below the MCL |
| Nyack Village Water Supply NY4303666 | 14,700 | 8 | 8.8 ppt at or above the MCL | 4.9 ppt at or above the MCL |
| Albertson WD NY2902815 | 13,500 | 7 | 6.0 ppt at or above the MCL | 3.4 ppt below the MCL |
| Fort Drum NY2212214 | 34,000 | 6 | — not detected above the reporting level | — not detected above the reporting level |
| Port Washington WD NY2912267 | 34,000 | 6 | 2.7 ppt below the MCL | 2.4 ppt below the MCL |
| Monroe Village NY3503535 | 12,000 | 6 | 7.5 ppt at or above the MCL | 2.6 ppt below the MCL |
| St James Water District NY5103266 | 10,587 | 6 | 3.3 ppt below the MCL | 2.1 ppt below the MCL |
Counties with the most systems that found PFAS
- Nassau County 20 of 33 surveyed systems
- Orange County 11 of 22 surveyed systems
- Suffolk County 7 of 10 surveyed systems
- Westchester County 7 of 27 surveyed systems
- Dutchess County 4 of 11 surveyed systems
- Broome County 4 of 5 surveyed systems
- Rockland County 3 of 3 surveyed systems
- Albany County 3 of 10 surveyed systems