CheckPFAS

ZIP Code 11792

High Risk
High Risk PFAS Risk Level

PFAS above EPA limits detected

1 compound exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.

4
PFAS Detected
1
Above EPA Limits
1
Water System
130%
Highest % of MCL

Compounds Exceeding EPA Limits

PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 130% of limit
Detected: 5.20 ppt
Find the right filter for your water
See our tested & reviewed PFAS-certified filters →

RIVERHEAD WD

NY5103705 High Risk
Water Type
Groundwater
PFAS Detected
4
Above MCL
1
State
New York
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
5.20ppt
130% of limit
4 ppt⚠ Exceeds MCL
PFOA
Perfluorooctanoic acid
4.00ppt
100% of limit
4 pptBelow limit
PFHxA
Perfluorohexanoic acid
3.30pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
3.20pptNo federal limit—Unregulated

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.

View raw EPA data →