ZIP Code 21703
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.
10
PFAS Detected
2
Above EPA Limits
3
Water Systems
383%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 383% of limit
Detected: 15.30 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 253% of limit
Detected: 10.10 ppt
CITY OF FREDERICK
MD0100015 Low LevelWater Type
Surface Water
PFAS Detected
1
Above MCL
0
State
Maryland
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFPeA Perfluoropentanoic acid | 3.10ppt | No federal limit | — | Unregulated |
NEW DESIGN - FREDERICK COUNTY
MD0100030 Low LevelWater Type
Surface Water
PFAS Detected
1
Above MCL
0
State
Maryland
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFPeA Perfluoropentanoic acid | 3.30ppt | No federal limit | — | Unregulated |
NEW LIFE CHRISTIAN SCHOOL
MD1100052 High RiskWater Type
Groundwater
PFAS Detected
8
Above MCL
2
State
Maryland
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 15.30ppt | 383% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 10.10ppt | 253% of limit
| 4 ppt | ⚠ Exceeds MCL |
lithium | 14200.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 24.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 15.40ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 14.30ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 10.80ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 9.20ppt | No federal limit | — | Unregulated |
Note: ZIP code 21703 is served by 3 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.