MAHWAH WATER DEPARTMENT
NJ · PWS ID NJ0233001 · Community water system
44
contaminants tested
22
detected
26,777
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxA | 0.0061 ug/L | 8/11 | 2025 |
| PFOA | 0.0125 ug/L | 8/11 | 2025 |
| PFPeA | 0.0061 ug/L | 8/11 | 2025 |
| PFBA | 0.0060 ug/L | 5/11 | 2025 |
| PFOS | 0.0045 ug/L | 4/11 | 2025 |
| PFBS | 0.0041 ug/L | 3/11 | 2025 |
| PFHpA | 0.0039 ug/L | 3/11 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 22.7 UG/L | 133/141 | SYR4 | 2012–2019 |
| Chloroform | 40.6 UG/L | 133/141 | SYR4 | 2012–2019 |
| Dibromochloromethane | 11.5 UG/L | 133/141 | SYR4 | 2012–2019 |
| TTHM | 75.3 UG/L | 133/133 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 54.6 UG/L | 105/133 | SYR4 | 2012–2019 |
| COPPER, FREE | 1230 UG/L | 95/130 | SYR4 | 2012–2018 |
| Dichloroacetic Acid | 28.8 UG/L | 93/133 | SYR4 | 2012–2019 |
| Bromoform | 2.2 UG/L | 89/141 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 13.9 UG/L | 87/133 | SYR4 | 2012–2019 |
| Lead | 427 UG/L | 55/122 | SYR4 | 2012–2018 |
| Dibromoacetic acid | 9.75 UG/L | 43/133 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0405 mg/L | 34/34 | LCR | 2024 |
| Monobromoacetic acid | 15.3 UG/L | 8/133 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 36.5 UG/L | 8/133 | SYR4 | 2012–2019 |
| lithium | 33.1 ug/L | 1/11 | UCMR-5 | 2025 |
22 contaminants tested, none detected
11Cl-PF3OUdS4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAHFPO-DANEtFOSAANFDHANMeFOSAAPFDAPFDoAPFEESAPFHpSPFHxSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnA
Areas served
MAHWAH TWP-0233