OAK ISLAND, TOWN OF
PWS ID: NC0410020 · OAK ISLAND, North Carolina 28465
PFAS Detected
9 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
26,924
Total Violations
98
Health-Based Violations
3
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 10,600
- County
- Brunswick
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 69
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 26 | 2018 |
| TTHM | MR | 23 | 2018 |
| Consumer Confidence Rule | Other | 18 | 2018 |
| Public Notice | Other | 8 | 2019 |
| Lead and Copper Rule | MR | 7 | 2015 |
| Nitrite | MR | 6 | 1999 |
| Nitrate | MR | 4 | 1997 |
| Coliform (TCR) | MR | 3 | 2003 |
| Coliform (TCR) | MCL | 3 | 2006 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 16 of 120 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NMeFOSAA | 7/22/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 7/22/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTA | 7/22/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| lithium | 7/22/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFOS | 7/22/2024 | 0.0110 µg/L | 0.004 µg/L | Detected |
| PFTrDA | 7/22/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFNA | 7/22/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 7/22/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 7/22/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 7/22/2024 | 0.0052 µg/L | 0.003 µg/L | Detected |
| PFHxS | 7/22/2024 | 0.0043 µg/L | 0.003 µg/L | Detected |
| PFOA | 7/22/2024 | 0.0068 µg/L | 0.004 µg/L | Detected |
| PFDoA | 7/22/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 7/22/2024 | 0.0079 µg/L | 0.003 µg/L | Detected |
| PFUnA | 7/22/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/22/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/22/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 7/22/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBA | 7/22/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 7/22/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 7/22/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 7/22/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 7/22/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 7/22/2024 | 0.0080 µg/L | 0.003 µg/L | Detected |
| PFPeS | 7/22/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 7/22/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFMBA | 7/22/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 7/22/2024 | 0.0036 µg/L | 0.003 µg/L | Detected |
| PFEESA | 7/22/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 7/22/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| lithium | 4/29/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFTA | 4/29/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 4/29/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NMeFOSAA | 4/29/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 4/29/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 10/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 10/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 10/9/2023 | 0.0120 µg/L | 0.003 µg/L | Detected |
| PFBS | 10/9/2023 | 0.0060 µg/L | 0.003 µg/L | Detected |
| PFMPA | 10/9/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 10/9/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 10/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 10/9/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 10/9/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 10/9/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 10/9/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 10/9/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| ADONA | 10/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 10/9/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 10/9/2023 | <0.002 µg/L | 0.002 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.