A92/100
WEST ALLIS WATERWORKS — Water Quality Report 2026
Serving 63,240 people · Wisconsin
Water Source
Purchased Surface Water
County
—
System ID
WI2410595
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2014.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About WEST ALLIS WATERWORKS
Is WEST ALLIS WATERWORKS water safe to drink?
WEST ALLIS WATERWORKS water receives a grade of A (92/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WEST ALLIS WATERWORKS detected?
69 contaminants were tested in WEST ALLIS WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WEST ALLIS WATERWORKS have any EPA violations?
Yes, WEST ALLIS WATERWORKS has 5 EPA violation(s) on record, with the most recent in 2014. Violation types include Other, MR.
How many people does WEST ALLIS WATERWORKS serve?
WEST ALLIS WATERWORKS serves approximately 63,240 people, Wisconsin. The system provides water to 1 community: West Allis.
What type of water does WEST ALLIS WATERWORKS provide?
WEST ALLIS WATERWORKS sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is WI2410595.
How does WEST ALLIS WATERWORKS compare to other utilities in Wisconsin?
WEST ALLIS WATERWORKS scores 92/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Wisconsin state page for a full comparison of water systems.