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States → Wisconsin

WEST ALLIS WATERWORKS

PWS ID: WI2410595 · West Allis, Wisconsin 53214-4688

Population Served
63,240
Total Violations
10
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
23,422
County
Milwaukee
School/Daycare
No
MCL Violations
0
Monitoring Violations
6
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 4 1995
Consumer Confidence Rule Other 3 2014
Lead and Copper Rule MR 2 2012

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFOA 7/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 7/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 7/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 7/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFUnA 7/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
6:2 FTS 7/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 7/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 7/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 7/1/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFHxA 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
NEtFOSAA 7/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 7/1/2025 <0.008 µg/L 0.008 µg/L Not Detected
NFDHA 7/1/2025 <0.02 µg/L 0.02 µg/L Not Detected
lithium 7/1/2025 <9 µg/L 9 µg/L Not Detected
PFEESA 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 7/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/1/2025 <0.006 µg/L 0.006 µg/L Not Detected
8:2 FTS 3/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 3/27/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 3/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 3/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 3/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 3/27/2025 <0.02 µg/L 0.02 µg/L Not Detected
4:2 FTS 3/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 3/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 3/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 3/27/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 3/27/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 3/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 3/27/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFPeS 3/27/2025 <0.004 µg/L 0.004 µg/L Not Detected
lithium 3/27/2025 <9 µg/L 9 µg/L Not Detected
PFBA 3/27/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 3/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 3/27/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 3/27/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 3/27/2025 <0.005 µg/L 0.005 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.