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Community PFAS Testing
Massachusetts Water Resources Authority

WINCHESTER

You might have seen recent news reports about per-and polyfluoroalkyl substances (together abbreviated as PFAS). This is a class of human-made chemicals typically associated with certain fire-fighting foams. These chemicals are persistent in the environment and have been used in products we all use for decades.

On October 2, 2020, MassDEP published the drinking water standard or maximum contaminant level (MCL) of 20 nanograms per liter (ng/L), or parts per trillion (ppt), for PFAS based on the sum of concentrations for six PFAS compounds. The six PFAS are: perfluorooctane sulfonic acid (PFOS); perfluorooctanoic acid (PFOA); perfluorohexane sulfonic acid (PFHxS); perfluorononanoic acid (PFNA); perfluoroheptanoic acid (PFHpA); and perfluorodecanoic acid (PFDA).

2024 PFAS Test Results for Winchester

PFAS Analyte (results in ppt) Treatment Plant - 04/2024
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt Not Detected

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Trace
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected

2023 PFAS Test Results for Winchester

PFAS Analyte (results in ppt) Treatment Plant - 10/2023
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Not Detected
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt 0 ppt

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Trace
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected

PFAS Analyte (results in ppt) Treatment Plant - 7/2023
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt 0 ppt

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Not Detected
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected

PFAS Analyte (results in ppt) Treatment Plant - 4/2023
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt 0 ppt

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Not Detected
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected

PFAS Analyte (results in ppt) Treatment Plant - 1/2023
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt 0 ppt

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Trace*
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected

2022 PFAS Test Results for Winchester

PFAS Analyte (results in ppt) Treatment Plant - 11/2022
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt Not Detected

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Trace*
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected


PFAS Analyte (results in ppt) Treatment Plant - 10/2022
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt 0 ppt

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Trace*
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected


PFAS Analyte (results in ppt) Treatment Plant - 7/2022
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt Not Detected

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Trace*
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected


PFAS Analyte (results in ppt) Treatment Plant - 4/2022
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt Not Detected

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Trace*
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected


PFAS Analyte (results in ppt) Treatment Plant - 1/2022
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ppt 0 ppt

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Trace*
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected

2021 PFAS Test Results for Winchester

PFAS Analyte (results in ppt) Treatment Plant - 10/2021
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Trace*
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ng/l 0 ng/l

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Trace*
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected

PFAS Analyte (results in ppt) Treatment Plant - 7/6/21
PFAS6 (regulated)
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Trace*
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Not Detected
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ng/l 0 ng/l

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed
PFAS6 (Regulated) are regulated by the state of Massachusetts
PFAS (Unregulated) are not regulated by the state of Massachusetts


Unregulated PFAS
PFBS Not Detected
PFHxA Not Detected
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected
11Cl-PF3OUdS Not Detected
9C1-PF3ONS Not Detected
Adona Not Detected
HFPO-DA Not Detected

PFAS Analyte (results in ppt) Treatment Plant - 4/6/21
Perfluorohexanesulfonic acid (PFHxS) Not Detected
Perfluoroheptanoic acid (PFHpA) Not Detected
Perfluorooctanoic acid (PFOA) Trace*
Perfluorooctanesulfonic acid (PFOS) Not Detected
Perfluorononanoic acid (PFNA) Not Detected
Perfluorodecanoic acid (PFDA) Not Detected
Sum of PFAS6 - compare to MassDEP MCL of 20 ng/l 0 ng/l

* Trace amounts are present but they are below the minimum concentration that can be reported as a quantified value. Categorized as not detected by MassDEP.
MCL = Maximum Contaminant Level, highest level allowed


 
PFBS Not Detected
PFHxA Not Detected
NEtFOSAA Not Detected
NMeFOSAA Not Detected
PFDoA Not Detected
PFTeDA Not Detected
PFTrDA Not Detected
PFUnA Not Detected

 
Information on MWRA PFAS Levels

 
Historic Withdrawls Reservoir Levels