PlainWater
States → Massachusetts

WINCHESTER WATER DEPT

PWS ID: MA3344000 · WINCHESTER, Massachusetts 01890

Population Served
22,970
Total Violations
62
Health-Based Violations
4
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
7,142
County
Middlesex
School/Daycare
No
MCL Violations
3
Monitoring Violations
48
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 4 2005
Nitrate MR 3 2014
Coliform (TCR) MCL 3 1997
Fluoride MR 2 2014
Mercury MR 2 2014
Selenium MR 2 2014
Cadmium MR 2 2014
Antimony, Total MR 2 2014
Beryllium, Total MR 2 2014
Nickel MR 2 2014
Thallium, Total MR 2 2014
CYANIDE MR 2 2014
2,4,5-TP MR 2 1991
2,4-D MR 2 1991
Toxaphene MR 2 1991
Methoxychlor MR 2 1991
BHC-GAMMA MR 2 1991
Endrin MR 2 1991
Chromium MR 2 2014
Barium MR 2 2014
Arsenic MR 2 2014
Surface Water Treatment Rule TT 1 1992
Radium-226 MR 1 1997
Radium-228 MR 1 1997
Gross Beta Particle Activity MR 1 1997
38-STRONTIUM-90 MR 1 1997
Tritium MR 1 1997

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
PFDA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 7/2/2024 <9 µg/L 9 µg/L Not Detected
PFBS 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 7/2/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/2/2024 <0.002 µg/L 0.002 µg/L Not Detected
NFDHA 7/2/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 7/2/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/2/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 7/2/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 7/2/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 7/2/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 7/2/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 7/2/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 7/2/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 7/2/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 7/2/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/2/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 7/2/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 7/2/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/2/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/2/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/2/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/2/2024 <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.