ZIP Code 03103
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.
3
PFAS Detected
3
Above EPA Limits
3
Water Systems
160%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 135% of limit
Detected: 5.40 ppt
LITTLE POND ESTATES
NH0192080 High RiskWater Type
Surface Water
PFAS Detected
1
Above MCL
1
State
New Hampshire
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 5.40ppt | 135% of limit
| 4 ppt | ⚠ Exceeds MCL |
PEU/LONDONDERRY
NH1391010 High RiskWater Type
Surface Water
PFAS Detected
1
Above MCL
1
State
New Hampshire
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 6.40ppt | 160% of limit
| 4 ppt | ⚠ Exceeds MCL |
MANCHESTER WATER WORKS, NH
NH1471010 High RiskWater Type
Surface Water
PFAS Detected
1
Above MCL
1
State
New Hampshire
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 5.00ppt | 125% of limit
| 4 ppt | ⚠ Exceeds MCL |
Note: ZIP code 03103 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.