FREDERICK TOWN OF
PWS ID: CO0162288 · FREDERICK, Colorado 80530
Population Served
17,173
Total Violations
43
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 4,714
- County
- Weld
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 36
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 30 | 2024 |
| Consumer Confidence Rule | Other | 4 | 2011 |
| TTHM | MR | 3 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2021 |
| Public Notice | Other | 2 | 2021 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 95 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| HFPO-DA | 9/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 9/23/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 9/23/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 9/23/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 9/23/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 4:2 FTS | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 9/23/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFMBA | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 9/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFEESA | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 9/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 9/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NFDHA | 9/23/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| ADONA | 9/23/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/23/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/23/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 9/23/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NMeFOSAA | 8/6/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFTA | 8/6/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| NEtFOSAA | 8/6/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 8/6/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| lithium | 7/7/2025 | <9 µg/L | 9 µg/L | Not Detected |
| 6:2 FTS | 5/19/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeS | 5/19/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 5/19/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 5/19/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 5/19/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 5/19/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 5/19/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 5/19/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 5/19/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 4:2 FTS | 5/19/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 5/19/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 5/19/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 5/19/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 5/19/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 5/19/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 5/19/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFHxA | 5/19/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 5/19/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 5/19/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 5/19/2025 | <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.