CITY OF WESTMINSTER
PWS ID: MD0060015 · WESTMINSTER, Maryland 21157
PFAS Detected
8 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
35,256
Total Violations
70
Health-Based Violations
27
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 10,157
- County
- Carroll
- School/Daycare
- No
- MCL Violations
- 21
- Monitoring Violations
- 43
- Treatment Tech Violations
- 6
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 14 | 2009 |
| Coliform (TCR) | MR | 12 | 2009 |
| TTHM | MCL | 7 | 2018 |
| ETHYLENE DIBROMIDE | MCL | 7 | 1995 |
| Nitrate | MCL | 7 | 2006 |
| Lead and Copper Rule | MR | 6 | 2013 |
| Fluoride | MR | 4 | 2009 |
| Cryptosporidium | MR | 4 | 2020 |
| Surface Water Treatment Rule | TT | 3 | 1996 |
| Interim Enhanced Surface Water Treatment Rule | TT | 3 | 2005 |
| TTHM | MR | 2 | 2007 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2007 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 69 of 840 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHxS | 9/4/2025 | 0.0042 µg/L | 0.003 µg/L | Detected |
| NFDHA | 9/4/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFBA | 9/4/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHxA | 9/4/2025 | 0.0054 µg/L | 0.003 µg/L | Detected |
| PFUnA | 9/4/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/4/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/4/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 9/4/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 9/4/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFNA | 9/4/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 9/4/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 9/4/2025 | 0.0124 µg/L | 0.004 µg/L | Detected |
| PFDA | 9/4/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 9/4/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 9/4/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 9/4/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 9/4/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 9/4/2025 | <9 µg/L | 9 µg/L | Not Detected |
| PFMBA | 9/4/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 9/4/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpA | 9/4/2025 | 0.0036 µg/L | 0.003 µg/L | Detected |
| PFBS | 9/4/2025 | 0.0040 µg/L | 0.003 µg/L | Detected |
| NMeFOSAA | 9/4/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 9/4/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 9/4/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFPeA | 9/4/2025 | 0.0042 µg/L | 0.003 µg/L | Detected |
| PFTA | 9/4/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFMPA | 9/4/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 4:2 FTS | 9/4/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 9/4/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 7/12/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFBS | 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 |
| PFNA | 7/12/2023 | <0.004 µg/L | 0.004 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 |
| PFHxA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 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 |
| PFDoA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTrDA | 7/12/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFMBA | 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 |
| PFPeA | 7/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 7/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 7/12/2023 | <0.005 µg/L | 0.005 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.