ZIP Code 28376
High RiskPFAS above EPA limits detected
3 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.
12
PFAS Detected
3
Above EPA Limits
2
Water Systems
375%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 120% of limit
Detected: 4.80 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 205% of limit
Detected: 8.20 ppt
HOKE CO REGIONAL WATER SYSTEM
NC0347025 High RiskWater Type
Groundwater
PFAS Detected
4
Above MCL
1
State
North Carolina
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 4.80ppt | 120% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 3.20ppt | 32% of limit
| 10 ppt | Below limit |
lithium | 12000.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 4.50ppt | No federal limit | — | Unregulated |
HOKE CO REGIONAL--ROCKFISH
NC0347030 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 | 15.00ppt | 375% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 8.20ppt | 205% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 4.70ppt | 47% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 9.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 8.30ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.20ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 6.10ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 4.20ppt | No federal limit | — | Unregulated |
Note: ZIP code 28376 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.