BRISTOL WATER DEPARTMENT
PWS ID: CT0170011 · BRISTOL, Connecticut 06010
PFAS Detected
2 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
52,079
Total Violations
269
Health-Based Violations
10
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 16,322
- County
- Hartford
- School/Daycare
- No
- MCL Violations
- 10
- Monitoring Violations
- 241
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 10 | 2005 |
| Coliform (TCR) | MR | 9 | 2008 |
| Consumer Confidence Rule | Other | 8 | 2025 |
| Atrazine | MR | 7 | 2006 |
| LASSO | MR | 7 | 2006 |
| ETHYLENE DIBROMIDE | MR | 6 | 2006 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 6 | 2006 |
| Arsenic | MR | 6 | 2019 |
| Cadmium | MR | 6 | 2019 |
| Chromium | MR | 6 | 2019 |
| Mercury | MR | 6 | 2019 |
| Selenium | MR | 6 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2019 |
| Barium | MR | 6 | 2019 |
| Fluoride | MR | 6 | 2019 |
| CYANIDE | MR | 6 | 2019 |
| Nitrate-Nitrite | MR | 4 | 2008 |
| 1,1,2-Trichloroethane | MR | 3 | 1993 |
| Pentachlorophenol | MR | 3 | 2006 |
| Total Polychlorinated Biphenyls (PCB) | MR | 3 | 2006 |
| 1,2-Dichloropropane | MR | 3 | 1993 |
| 1,1,1-Trichloroethane | MR | 3 | 1993 |
| Aldicarb | MR | 3 | 2006 |
| trans-1,2-Dichloroethylene | MR | 3 | 1993 |
| Vinyl chloride | MR | 3 | 1993 |
| o-Dichlorobenzene | MR | 3 | 1993 |
| Styrene | MR | 3 | 1993 |
| Benzo(a)pyrene | MR | 3 | 2006 |
| Dalapon | MR | 3 | 2006 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2006 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 300 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFBA | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 4:2 FTS | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/20/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFPeS | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 9/20/2023 | <9 µg/L | 9 µg/L | Not Detected |
| PFHpS | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 9/20/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFNA | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOS | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 9/20/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHpA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| lithium | 9/20/2023 | <9 µg/L | 9 µg/L | Not Detected |
| PFHpS | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 9/20/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 4:2 FTS | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/20/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/20/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 9/20/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFBS | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 9/20/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 9/20/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
PFAS data from EPA UCMR5 monitoring program (2023-2025).
This data is provided for informational purposes only.