FAIRFIELD WATER SUPPLY
PWS ID: IA5131033 · FAIRFIELD, Iowa 52556
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
9,821
Total Violations
53
Health-Based Violations
18
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 5,250
- County
- Jefferson
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 17
- Treatment Tech Violations
- 13
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 13 | 1998 |
| Coliform (TCR) | MCL | 5 | 2004 |
| Atrazine | MR | 4 | 1996 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2013 |
| TTHM | MR | 4 | 2013 |
| Coliform (TCR) | MR | 4 | 1995 |
| Nitrate | MR | 1 | 1984 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 60 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NEtFOSAA | 8/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHxS | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 8/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 8/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 8/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 8/14/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 8/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 8/14/2023 | 199.0000 µg/L | 9 µg/L | Detected |
| NMeFOSAA | 8/14/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFHpA | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/14/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFTA | 8/14/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| 4:2 FTS | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 8/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 8/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBS | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTrDA | 8/14/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 8/14/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 8/14/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 8/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFNA | 8/14/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| HFPO-DA | 8/14/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 2/15/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 2/15/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| NFDHA | 2/15/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFTrDA | 2/15/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NEtFOSAA | 2/15/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 2/15/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFBS | 2/15/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 2/15/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 2/15/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 2/15/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 2/15/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 2/15/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 2/15/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 2/15/2023 | 160.0000 µg/L | 9 µg/L | Detected |
| PFHxA | 2/15/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 4:2 FTS | 2/15/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 2/15/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFEESA | 2/15/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 2/15/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 2/15/2023 | <0.003 µg/L | 0.003 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.