ZIP Code 02332
High RiskPFAS above EPA limits detected
5 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
5
Above EPA Limits
2
Water Systems
875%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 150% of limit
Detected: 6.00 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 128% of limit
Detected: 5.10 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 310% of limit
Detected: 31.00 ppt
TOWN OF AVON
MA4018000 High RiskWater Type
Groundwater
PFAS Detected
2
Above MCL
2
State
Massachusetts
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 6.00ppt | 150% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 5.10ppt | 128% of limit
| 4 ppt | ⚠ Exceeds MCL |
DUXBURY WATER DEPARTMENT
MA4082000 High RiskWater Type
Groundwater
PFAS Detected
10
Above MCL
3
State
Massachusetts
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 35.00ppt | 875% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 31.00ppt | 310% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 7.50ppt | 188% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 46.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 30.70ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 12.90ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 10.60ppt | No federal limit | — | Unregulated |
6:2 FTS 6:2 Fluorotelomer sulfonic acid | 5.70ppt | No federal limit | — | Unregulated |
Show 2 more compounds detected at low levels
| PFBSPerfluorobutane sulfonic acid | 3.50 ppt | No federal limit |
| PFHpS | 3.30 ppt | No federal limit |
Note: ZIP code 02332 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.