ISU
PWS ID: IA8503528 · AMES, Iowa 50011
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
42,000
Total Violations
49
Health-Based Violations
16
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- State
- Connections
- 103
- County
- Story
- School/Daycare
- Yes
- MCL Violations
- 16
- Monitoring Violations
- 27
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 16 | 2005 |
| TTHM | MR | 8 | 2013 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2013 |
| Nitrite | MR | 8 | 2022 |
| Coliform (TCR) | MR | 3 | 1997 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 56 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFTrDA | 9/16/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 9/16/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| NEtFOSAA | 9/16/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 9/16/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| lithium | 9/16/2024 | 29.0000 µg/L | 9 µg/L | Detected |
| 6:2 FTS | 3/12/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 3/12/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 3/12/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 3/12/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBA | 3/12/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFNA | 3/12/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 3/12/2025 | 23.0000 µg/L | 9 µg/L | Detected |
| PFEESA | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 3/12/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 3/12/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 3/12/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 3/12/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFOS | 3/12/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 3/12/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 3/12/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFHxA | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 3/12/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 10/8/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 4:2 FTS | 10/8/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 10/8/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 10/8/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 10/8/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 10/8/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 10/8/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 10/8/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeS | 10/8/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 10/8/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFNA | 10/8/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBA | 10/8/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHxS | 10/8/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 10/8/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 10/8/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 10/8/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 9Cl-PF3ONS | 10/8/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFDoA | 10/8/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 10/8/2024 | <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.