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States → Massachusetts

SANDWICH WATER DISTRICT

PWS ID: MA4261000 · SANDWICH, Massachusetts 02563

Population Served
23,000
Total Violations
22
Health-Based Violations
18
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
7,315
County
Barnstable
School/Daycare
No
MCL Violations
18
Monitoring Violations
4
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 18 2009
Coliform (TCR) MR 3 2008
Revised Total Coliform Rule MON 1 2025

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 600 samples detected PFAS.

Contaminant Date Result MRL Status
11Cl-PF3OUdS 7/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 7/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 7/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/10/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFMBA 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 7/10/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 7/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 7/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 7/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/10/2024 <0.02 µg/L 0.02 µg/L Not Detected
9Cl-PF3ONS 5/13/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFEESA 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/13/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/13/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/13/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/13/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/13/2024 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 5/13/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/13/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/13/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/13/2024 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 5/13/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/13/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFHxS 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/13/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 5/13/2024 <0.003 µg/L 0.003 µg/L Not Detected
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.