WESTBOROUGH WATER DEPARTMENT
PWS ID: MA2328000 · WESTBOROUGH, Massachusetts 01581
PFAS Detected
3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
21,567
Total Violations
147
Health-Based Violations
15
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 5,439
- County
- Worcester
- School/Daycare
- No
- MCL Violations
- 13
- Monitoring Violations
- 109
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 13 | 2016 |
| Arsenic | MR | 9 | 2023 |
| Radium-228 | MR | 4 | 2012 |
| Coliform (TCR) | MR | 4 | 2016 |
| Radium-226 | MR | 4 | 2012 |
| LASSO | MR | 2 | 2022 |
| Carbofuran | MR | 2 | 2022 |
| ETHYLENE DIBROMIDE | MR | 2 | 2022 |
| Pentachlorophenol | MR | 2 | 2022 |
| Heptachlor | MR | 2 | 2022 |
| Toxaphene | MR | 2 | 2022 |
| 2,4,5-TP | MR | 2 | 2022 |
| BHC-GAMMA | MR | 2 | 2022 |
| Total Polychlorinated Biphenyls (PCB) | MR | 2 | 2022 |
| Benzo(a)pyrene | MR | 2 | 2022 |
| Dalapon | MR | 2 | 2022 |
| Di(2-ethylhexyl) adipate | MR | 2 | 2022 |
| Dinoseb | MR | 2 | 2022 |
| Diquat | MR | 2 | 2022 |
| Endothall | MR | 2 | 2022 |
| Glyphosate | MR | 2 | 2022 |
| HEXACHLOROBENZENE | MR | 2 | 2022 |
| Hexachlorocyclopentadiene | MR | 2 | 2022 |
| Picloram | MR | 2 | 2022 |
| Simazine | MR | 2 | 2022 |
| 2,3,7,8-TCDD | MR | 2 | 2022 |
| Revised Total Coliform Rule | MON | 2 | 2023 |
| Surface Water Treatment Rule | TT | 2 | 2008 |
| Lead and Copper Rule | MR | 2 | 2023 |
| Methoxychlor | MR | 2 | 2022 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 360 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHpA | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 9/14/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 9/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 9/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 9/14/2023 | <9 µg/L | 9 µg/L | Not Detected |
| PFHxS | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 9/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFMBA | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 9/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 9/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFEESA | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/14/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFMPA | 9/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 4:2 FTS | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 9/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 9/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 9/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 9/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 9/14/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| NMeFOSAA | 8/9/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 8/9/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 8/9/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 8/9/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| 6:2 FTS | 7/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 7/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/12/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 7/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 7/12/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFDoA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 7/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 7/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 7/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 7/12/2023 | 0.0034 µg/L | 0.003 µg/L | Detected |
| 4:2 FTS | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 7/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 7/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 7/12/2023 | <0.004 µg/L | 0.004 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.