CheckPFAS

ZIP Code 02770

High Risk
High Risk PFAS Risk Level

PFAS 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.

8
PFAS Detected
2
Above EPA Limits
1
Water System
275%
Highest % of MCL

Compounds Exceeding EPA Limits

PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 275% of limit
Detected: 11.00 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 125% of limit
Detected: 5.00 ppt
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MIDDLEBOROUGH WATER SUPPLY

MA4182000 High Risk
Water Type
Groundwater
PFAS Detected
8
Above MCL
2
State
Massachusetts
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOA
Perfluorooctanoic acid
11.00ppt
275% of limit
4 ppt⚠ Exceeds MCL
PFOS
Perfluorooctane sulfonic acid
5.00ppt
125% of limit
4 ppt⚠ Exceeds MCL
PFHxS
Perfluorohexane sulfonic acid
3.00ppt
30% of limit
10 pptBelow limit
PFPeA
Perfluoropentanoic acid
13.00pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
10.00pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
5.00pptNo federal limit—Unregulated
PFBS
Perfluorobutane sulfonic acid
5.00pptNo federal limit—Unregulated
PFHpA
Perfluoroheptanoic acid
4.00pptNo 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 →