A86/100
MISHICOT WATERWORKS — Water Quality Report 2026
Serving 1,432 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI4360430
Violations
3
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.36 mg/L | 1.30 mg/L | Over Limit |
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 2009.
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 MISHICOT WATERWORKS
Is MISHICOT WATERWORKS water safe to drink?
MISHICOT WATERWORKS water receives a grade of A (86/100), which is considered excellent. Out of 9 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has MISHICOT WATERWORKS detected?
9 contaminants were tested in MISHICOT WATERWORKS's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does MISHICOT WATERWORKS have any EPA violations?
Yes, MISHICOT WATERWORKS has 3 EPA violation(s) on record, with the most recent in 2009. Violation types include Other, MR.
How many people does MISHICOT WATERWORKS serve?
MISHICOT WATERWORKS serves approximately 1,432 people, Wisconsin. The system provides water to 1 community: Mishicot.
What type of water does MISHICOT WATERWORKS provide?
MISHICOT WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI4360430.
How does MISHICOT WATERWORKS compare to other utilities in Wisconsin?
MISHICOT WATERWORKS scores 86/100 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.