SUFFOLK COUNTY WATER AUTHORITY
NY · PWS ID NY5110526 · Community water system
31
contaminants tested
11
detected
1,100,000
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFPeA | 0.0394 ug/L | 53/480 | 2025 |
| PFHxA | 0.0435 ug/L | 45/480 | 2025 |
| PFHxS | 0.0108 ug/L | 19/480 | 2025 |
| PFOA | 0.0065 ug/L | 19/480 | 2025 |
| PFOS | 0.0174 ug/L | 13/480 | 2025 |
| PFBA | 0.0126 ug/L | 9/480 | 2025 |
| PFBS | 0.0052 ug/L | 5/480 | 2025 |
| PFHpA | 0.0096 ug/L | 4/480 | 2025 |
| 6:2 FTS | 0.0236 ug/L | 2/480 | 2025 |
| PFNA | 0.0057 ug/L | 2/480 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| LEAD SUMMARY | 0.0080 mg/L | 21/21 | LCR | 2027 |
20 contaminants tested, none detected
11Cl-PF3OUdS4:2 FTS8:2 FTS9Cl-PF3ONSADONAHFPO-DANEtFOSAANFDHANMeFOSAAPFDAPFDoAPFEESAPFHpSPFMBAPFMPAPFPeSPFTAPFTrDAPFUnAlithium
Areas served
BABYLON (T)BROOKHAVEN (T)EAST HAMPTON (T)HUNTINGTON (T)ISLIP (T)RIVERHEAD (T)SMITHTOWN (T)SOUTHAMPTON (T)SOUTHOLD (T)