D25/100
WESTON MUNICIPAL UTILITIES — Water Quality Report 2026
Serving 16,000 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI7370163
Violations
53
Contaminant Test Results
4 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.009 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.006 µg/L | 0.004 µg/L | Over Limit |
chlorate | 707.52 µg/L | — | Above Goal |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2023 – June 30, 2023Enforcement: Resolving — corrective action underway
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 WESTON MUNICIPAL UTILITIES
Is WESTON MUNICIPAL UTILITIES water safe to drink?
WESTON MUNICIPAL UTILITIES water receives a grade of D (25/100), which is considered poor. 2 contaminant(s) exceed EPA legal limits and 53 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WESTON MUNICIPAL UTILITIES detected?
66 contaminants were tested in WESTON MUNICIPAL UTILITIES's water. Notable contaminants include PFOS, PFOA, Lead (90th percentile), chlorate. 2 exceed EPA legal limits (MCLs). 4 exceed EPA health goals (MCLGs).
Does WESTON MUNICIPAL UTILITIES have any EPA violations?
Yes, WESTON MUNICIPAL UTILITIES has 53 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, Other.
How many people does WESTON MUNICIPAL UTILITIES serve?
WESTON MUNICIPAL UTILITIES serves approximately 16,000 people, Wisconsin. The system provides water to 1 community: Weston.
What type of water does WESTON MUNICIPAL UTILITIES provide?
WESTON MUNICIPAL UTILITIES sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI7370163.
How does WESTON MUNICIPAL UTILITIES compare to other utilities in Wisconsin?
WESTON MUNICIPAL UTILITIES scores 25/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Wisconsin state page for a full comparison of water systems.