ZIP Code 27401
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.
13
PFAS Detected
4
Above EPA Limits
2
Water Systems
890%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 890% of limit
Detected: 35.60 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 168% of limit
Detected: 16.80 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 140% of limit
Detected: 5.60 ppt
GREENSBORO, CITY OF
NC0241010 High RiskWater Type
Surface Water
PFAS Detected
9
Above MCL
3
State
North Carolina
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 35.60ppt | 890% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 16.80ppt | 168% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 5.60ppt | 140% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxA Perfluorohexanoic acid | 10.40ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 10.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 9.70ppt | No federal limit | — | Unregulated |
6:2 FTS 6:2 Fluorotelomer sulfonic acid | 7.20ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.30ppt | No federal limit | — | Unregulated |
Show 1 more compound detected at low levels
| PFHpAPerfluoroheptanoic acid | 3.80 ppt | No federal limit |
SOUTHERN MIDDLE SCHOOL
NC3041076 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 |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 5.30ppt | 133% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 3.70ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.60ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.20ppt | No federal limit | — | Unregulated |
Note: ZIP code 27401 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.