A92/100
STOUGHTON WATERWORKS — Water Quality Report 2026
Serving 13,078 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI1130078
Violations
2
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 1077.60 µg/L | — | Above Goal |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2020.
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 STOUGHTON WATERWORKS
Is STOUGHTON WATERWORKS water safe to drink?
STOUGHTON WATERWORKS water receives a grade of A (92/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has STOUGHTON WATERWORKS detected?
66 contaminants were tested in STOUGHTON WATERWORKS's water. Notable contaminants include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does STOUGHTON WATERWORKS have any EPA violations?
Yes, STOUGHTON WATERWORKS has 2 EPA violation(s) on record, with the most recent in 2020. Violation types include MON, MR.
How many people does STOUGHTON WATERWORKS serve?
STOUGHTON WATERWORKS serves approximately 13,078 people, Wisconsin. The system provides water to 1 community: Stoughton.
What type of water does STOUGHTON WATERWORKS provide?
STOUGHTON WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI1130078.
How does STOUGHTON WATERWORKS compare to other utilities in Wisconsin?
STOUGHTON 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.