DENVER BORO
PWS ID: PA7360017 · DENVER, Pennsylvania 17517
PFAS Detected
3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
3,861
Total Violations
101
Health-Based Violations
3
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,492
- County
- Lancaster
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 92
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 10 | 2004 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2017 |
| TTHM | MR | 10 | 2017 |
| Coliform (TCR) | MR | 8 | 2004 |
| Di(2-ethylhexyl) phthalate | MR | 7 | 2023 |
| Di(2-ethylhexyl) adipate | MR | 7 | 2023 |
| CARBON, TOTAL | MR | 4 | 2016 |
| Nitrate | MR | 3 | 2006 |
| Groundwater Rule | MR | 2 | 2024 |
| Antimony, Total | MR | 2 | 1994 |
| LASSO | MR | 2 | 1995 |
| Benzo(a)pyrene | MR | 2 | 1995 |
| Pentachlorophenol | MR | 2 | 1995 |
| ETHYLENE DIBROMIDE | MR | 2 | 1995 |
| Aldicarb sulfoxide | MR | 2 | 1995 |
| Aldicarb sulfone | MR | 2 | 1995 |
| Hexachlorocyclopentadiene | MR | 2 | 1995 |
| Thallium, Total | MR | 2 | 1994 |
| Surface Water Treatment Rule | TT | 2 | 2020 |
| Nickel | MR | 2 | 1994 |
| Consumer Confidence Rule | Other | 2 | 1999 |
| Beryllium, Total | MR | 2 | 1994 |
| Chlorine | MR | 1 | 2004 |
| Interim Enhanced Surface Water Treatment Rule | MR | 1 | 2008 |
| p-Dichlorobenzene | MR | 1 | 1990 |
| 1,1-Dichloroethylene | MR | 1 | 1990 |
| 1,2-Dichloroethane | MR | 1 | 1990 |
| Carbon tetrachloride | MR | 1 | 1990 |
| Trichloroethylene | MR | 1 | 1990 |
| Public Notice | Other | 1 | 2020 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 180 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFOA | 9/3/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 9/3/2025 | <9 µg/L | 9 µg/L | Not Detected |
| PFTrDA | 9/3/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NEtFOSAA | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 9/3/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| NMeFOSAA | 9/3/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFTA | 9/3/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFBS | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 9/3/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 9/3/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 9/3/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 9/3/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 9/3/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMBA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/3/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFBA | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| lithium | 9/3/2025 | <9 µg/L | 9 µg/L | Not Detected |
| 8:2 FTS | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOA | 9/3/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 9/3/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFNA | 9/3/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 9/3/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 6:2 FTS | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBA | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 9/3/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| ADONA | 9/3/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/3/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/3/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 9/3/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFBS | 9/3/2025 | 0.0043 µg/L | 0.003 µg/L | 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.