PlainWater
States → Massachusetts

CONCORD WATER DEPT

PWS ID: MA3067000 · CONCORD, Massachusetts 01742

PFAS Detected

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

Population Served
18,788
Total Violations
25
Health-Based Violations
4
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
5,710
County
Middlesex
School/Daycare
No
MCL Violations
4
Monitoring Violations
8
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 5 1994
Coliform (TCR) MCL 2 1999
Bromate MCL 2 2022
Lead and Copper Rule MR 2 1992
Gross Alpha, Excl. Radon and U MR 1 1991

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 16 of 330 samples detected PFAS.

Contaminant Date Result MRL Status
ADONA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/19/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/19/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/19/2024 0.0045 µg/L 0.003 µg/L Detected
PFDoA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/19/2024 0.0060 µg/L 0.004 µg/L Detected
PFOS 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/19/2024 <9 µg/L 9 µg/L Not Detected
4:2 FTS 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 8/19/2024 0.0062 µg/L 0.003 µg/L Detected
PFMBA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/19/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFHpS 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 8/19/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 8/19/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 8/19/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 8/19/2024 0.0031 µg/L 0.003 µg/L Detected
HFPO-DA 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 8/12/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 8/12/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 8/12/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 8/12/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFPeA 8/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 8/12/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 8/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/12/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 8/12/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFMBA 8/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 8/12/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 8/12/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/12/2024 <9 µg/L 9 µg/L Not Detected
PFBA 8/12/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 8/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 8/12/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/12/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 8/12/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/12/2024 <0.002 µg/L 0.002 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.