PlainWater
States → Wisconsin

MARSHFIELD UTILITIES

PWS ID: WI7720165 · MARSHFIELD, Wisconsin 54449

PFAS Detected

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

Population Served
18,815
Total Violations
18
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
7,999
County
Wood
School/Daycare
No
MCL Violations
0
Monitoring Violations
12
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Radium-228 MR 4 2015
Gross Alpha, Excl. Radon and U MR 4 2015
Lead and Copper Rule TT 4 2020
Combined Radium (-226 and -228) MR 4 2015

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 13 of 180 samples detected PFAS.

Contaminant Date Result MRL Status
PFNA 7/12/2023 <0.004 µg/L 0.004 µg/L Not Detected
lithium 7/12/2023 <9 µg/L 9 µg/L Not Detected
PFBS 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/12/2023 0.0110 µg/L 0.003 µg/L Detected
PFHpA 7/12/2023 0.0034 µg/L 0.003 µg/L Detected
PFHxS 7/12/2023 0.0100 µg/L 0.003 µg/L Detected
8:2 FTS 7/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/12/2023 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 7/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 7/12/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 7/12/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/12/2023 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 7/12/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/12/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 7/12/2023 0.0120 µg/L 0.004 µg/L Detected
4:2 FTS 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 7/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/12/2023 0.0067 µg/L 0.005 µg/L Detected
HFPO-DA 7/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 7/12/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 7/12/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/12/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/12/2023 0.0140 µg/L 0.003 µg/L Detected
PFTrDA 7/12/2023 <0.007 µg/L 0.007 µg/L Not Detected
4:2 FTS 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 7/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 7/12/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/12/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 7/12/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 7/12/2023 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 7/12/2023 <0.006 µg/L 0.006 µg/L Not Detected
6:2 FTS 7/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 7/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 7/12/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 7/12/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 7/12/2023 <9 µg/L 9 µg/L Not Detected
PFBA 7/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFNA 7/12/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 7/12/2023 <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.