GEISINGER MEDICAL CENTER
PWS ID: PA4470012 · DANVILLE, Pennsylvania 17822
Population Served
6,442
Total Violations
473
Health-Based Violations
8
Water Source
Surface Water
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Montour
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 443
- Treatment Tech Violations
- 7
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorite | MR | 21 | 2025 |
| Chlorine | MR | 19 | 2019 |
| Surface Water Treatment Rule | MR | 16 | 2019 |
| Chlorine dioxide | MR | 14 | 2019 |
| Barium | MR | 10 | 2015 |
| Cadmium | MR | 10 | 2015 |
| Chromium | MR | 10 | 2015 |
| Fluoride | MR | 10 | 2015 |
| Selenium | MR | 10 | 2015 |
| Coliform (TCR) | MR | 10 | 2007 |
| Mercury | MR | 10 | 2015 |
| Arsenic | MR | 10 | 2015 |
| Antimony, Total | MR | 9 | 2015 |
| Beryllium, Total | MR | 9 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 9 | 2020 |
| TTHM | MR | 9 | 2020 |
| CYANIDE | MR | 9 | 2015 |
| Nickel | MR | 9 | 2015 |
| Thallium, Total | MR | 9 | 2015 |
| Revised Total Coliform Rule | MON | 8 | 2019 |
| E. COLI | MR | 8 | 2022 |
| Revised Total Coliform Rule | TT | 7 | 2022 |
| Revised Total Coliform Rule | RPT | 7 | 2022 |
| Public Notice | Other | 7 | 2022 |
| cis-1,2-Dichloroethylene | MR | 6 | 2010 |
| DICHLOROMETHANE | MR | 6 | 2010 |
| o-Dichlorobenzene | MR | 6 | 2010 |
| p-Dichlorobenzene | MR | 6 | 2010 |
| 1,1-Dichloroethylene | MR | 6 | 2010 |
| trans-1,2-Dichloroethylene | MR | 6 | 2010 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHxS | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/15/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 7/15/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 7/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 7/15/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFNA | 7/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBA | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOS | 7/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTA | 7/15/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 7/15/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NEtFOSAA | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 7/15/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| 4:2 FTS | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 7/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 7/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 7/15/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 4/22/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 4/22/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 4/22/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 4/22/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHxA | 4/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 4/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 4/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDoA | 4/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 4/15/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 9Cl-PF3ONS | 4/15/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 4/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDA | 4/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 4/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 4:2 FTS | 4/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 4/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 4/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 4/15/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFBS | 4/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 4/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 4/15/2024 | <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.