ZIP Code 28390
High RiskPFAS above EPA limits detected
4 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.
15
PFAS Detected
4
Above EPA Limits
2
Water Systems
390%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 390% of limit
Detected: 15.60 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 235% of limit
Detected: 9.40 ppt
SPRING LAKE, TOWN OF
NC0326020 High RiskWater Type
Surface Water
PFAS Detected
8
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 | 15.60ppt | 390% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 9.40ppt | 235% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 8.30ppt | 83% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 14.90ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 12.10ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 7.90ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 6.40ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 5.50ppt | No federal limit | — | Unregulated |
HARNETT REGIONAL WATER
NC0343045 High RiskWater Type
Surface Water
PFAS Detected
7
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 | 12.30ppt | 308% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 7.70ppt | 193% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 3.10ppt | 31% of limit
| 10 ppt | Below limit |
PFHxA Perfluorohexanoic acid | 7.10ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 6.90ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.60ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.40ppt | No federal limit | — | Unregulated |
Note: ZIP code 28390 is served by 2 separate water utilities.
Results above show data for each system independently.
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.