ZIP Code 10549
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
2650%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 2650% of limit
Detected: 106.00 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 695% of limit
Detected: 27.80 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 516% of limit
Detected: 51.60 ppt
YESHIVA FARM SETTLEMENT
NY5903150 High RiskWater Type
GU
PFAS Detected
10
Above MCL
3
State
New York
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 106.00ppt | 2650% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 27.80ppt | 695% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 51.60ppt | 516% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFNA Perfluorononanoic acid | 5.00ppt | 50% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 106.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 69.00ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 45.50ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 30.50ppt | No federal limit | — | Unregulated |
Show 2 more compounds detected at low levels
| PFPeS | 7.00 ppt | No federal limit |
| PFBSPerfluorobutane sulfonic acid | 6.10 ppt | No federal limit |
MOUNT KISCO WATER DEPARTMENT
NY5903437 Low LevelWater Type
Surface Water
PFAS Detected
2
Above MCL
0
State
New York
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 13600.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 3.10ppt | No federal limit | — | Unregulated |
Note: ZIP code 10549 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.