ZIP Code 20187
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.
9
PFAS Detected
3
Above EPA Limits
2
Water Systems
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 123% of limit
Detected: 4.90 ppt
NEW BALTIMORE REGIONAL
VA6061318 High RiskWater Type
Groundwater
PFAS Detected
7
Above MCL
2
State
Virginia
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 | 4.90ppt | 123% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 6.20ppt | 62% of limit
| 10 ppt | Below limit |
lithium | 34800.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 11.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 8.20ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.60ppt | No federal limit | — | Unregulated |
WARRENTON, TOWN OF
VA6061600 High RiskWater Type
Groundwater
PFAS Detected
2
Above MCL
1
State
Virginia
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 4.60ppt | 115% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 3.30ppt | No federal limit | — | Unregulated |
Note: ZIP code 20187 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.