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States → Massachusetts

MIDDLEBOROUGH WATER SUPPLY

PWS ID: MA4182000 · MIDDLEBOROUGH, Massachusetts 02346

PFAS Detected

8 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
15,350
Total Violations
32
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
6,281
County
Plymouth
School/Daycare
No
MCL Violations
7
Monitoring Violations
12
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 7 2005
Consumer Confidence Rule Other 2 2012
Lead and Copper Rule MR 2 2006
Trichloroethylene MR 1 1993
1,1,1-Trichloroethane MR 1 1993
1,1-Dichloroethylene MR 1 1993
Nitrite MR 1 1993
Coliform (TCR) MR 1 1996
1,2-Dichloroethane MR 1 1993
Benzene MR 1 1993
Carbon tetrachloride MR 1 1993
p-Dichlorobenzene MR 1 1993
Vinyl chloride MR 1 1993

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 36 of 600 samples detected PFAS.

Contaminant Date Result MRL Status
NFDHA 6/2/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFBS 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 6/2/2025 0.0040 µg/L 0.003 µg/L Detected
PFHxS 6/2/2025 0.0030 µg/L 0.003 µg/L Detected
PFOS 6/2/2025 0.0040 µg/L 0.004 µg/L Detected
PFDoA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 6/2/2025 0.0100 µg/L 0.003 µg/L Detected
PFUnA 6/2/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 6/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 6/2/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 6/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 6/2/2025 0.0130 µg/L 0.003 µg/L Detected
PFMPA 6/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 6/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeS 6/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 6/2/2025 <0.008 µg/L 0.008 µg/L Not Detected
8:2 FTS 6/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 6/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 6/2/2025 0.0050 µg/L 0.005 µg/L Detected
PFDA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 6/2/2025 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 6/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 6/2/2025 <0.007 µg/L 0.007 µg/L Not Detected
lithium 6/2/2025 <9 µg/L 9 µg/L Not Detected
PFMBA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 6/2/2025 0.0110 µg/L 0.004 µg/L Detected
NEtFOSAA 6/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 6/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 6/2/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFBS 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 6/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 6/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 6/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 6/2/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFHpA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 6/2/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFTrDA 6/2/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 6/2/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFHxA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 6/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 6/2/2025 <0.02 µg/L 0.02 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.