ZIP Code 28465
High RiskPFAS above EPA limits detected
2 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
9
PFAS Detected
2
Above EPA Limits
1
Water System
300%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 300% of limit
Detected: 12.00 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 175% of limit
Detected: 7.00 ppt
OAK ISLAND, TOWN OF
NC0410020 High RiskWater Type
Surface Water
PFAS Detected
9
Above MCL
2
State
North Carolina
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 12.00ppt | 300% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 7.00ppt | 175% of limit
| 4 ppt | ⚠ Exceeds MCL |
HFPO-DA GenX (Hexafluoropropylene oxide dimer acid) | 5.20ppt | 52% of limit
| 10 ppt | Below limit |
PFHxS Perfluorohexane sulfonic acid | 5.10ppt | 51% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 12.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 9.50ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.60ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 6.00ppt | No federal limit | — | Unregulated |
Show 1 more compound detected at low levels
| PFHpAPerfluoroheptanoic acid | 4.10 ppt | No federal limit |
Data source: EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5) — January 2026 release.
UCMR 5 tested ~10,000 public water systems serving more than 25 people between 2023-2025 for 29 PFAS compounds.
Detection values represent the highest single-sample result measured at entry points to the distribution system.