MONROE CITY PWS
PWS ID: OH0902012 · MONROE, Ohio 45050
Population Served
15,600
Total Violations
114
Health-Based Violations
8
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 4,536
- County
- Butler
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 99
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 20 | 2024 |
| Arsenic | MR | 19 | 2011 |
| TTHM | MR | 15 | 2024 |
| Coliform (TCR) | MR | 9 | 2016 |
| Coliform (TCR) | MCL | 8 | 1993 |
| Nitrate | MR | 8 | 2003 |
| Lead and Copper Rule | MR | 6 | 2011 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 4 | 2011 |
| Methoxychlor | MR | 3 | 1997 |
| Carbofuran | MR | 3 | 1997 |
| 2,4-D | MR | 3 | 1997 |
| Pentachlorophenol | MR | 3 | 1997 |
| Benzo(a)pyrene | MR | 3 | 1997 |
| BHC-GAMMA | MR | 3 | 1997 |
| Public Notice | Other | 2 | 2025 |
| Consumer Confidence Rule | Other | 1 | 2021 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| 9Cl-PF3ONS | 8/2/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/2/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 8/2/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 8/2/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 8/2/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 8/2/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| ADONA | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 8/2/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 8/2/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 8/2/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 8/2/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 8/2/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 8/2/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 8/2/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTrDA | 8/2/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFBS | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 8/2/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 8/2/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| NMeFOSAA | 8/2/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 8/2/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| lithium | 8/2/2023 | <9 µg/L | 9 µg/L | Not Detected |
| lithium | 5/9/2023 | <9 µg/L | 9 µg/L | Not Detected |
| 4:2 FTS | 5/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 5/9/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 5/9/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 5/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 5/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 5/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 5/9/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFTA | 5/9/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHpS | 5/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 5/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 5/9/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeS | 5/9/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpA | 5/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBA | 5/9/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 5/9/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NEtFOSAA | 5/9/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 5/9/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFBS | 5/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTrDA | 5/9/2023 | <0.007 µg/L | 0.007 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.