D38/100
CEDAR GROVE WATERWORKS — Water Quality Report 2026
Serving 2,213 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI4600437
Violations
51
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.009 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 CEDAR GROVE WATERWORKS
Is CEDAR GROVE WATERWORKS water safe to drink?
CEDAR GROVE WATERWORKS water receives a grade of D (38/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 51 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CEDAR GROVE WATERWORKS detected?
1 contaminants were tested in CEDAR GROVE WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CEDAR GROVE WATERWORKS have any EPA violations?
Yes, CEDAR GROVE WATERWORKS has 51 EPA violation(s) on record, with the most recent in 2014. Violation types include MR, MCL. 2 are health-based violations.
How many people does CEDAR GROVE WATERWORKS serve?
CEDAR GROVE WATERWORKS serves approximately 2,213 people, Wisconsin. The system provides water to 1 community: Cedar Grove.
What type of water does CEDAR GROVE WATERWORKS provide?
CEDAR GROVE WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI4600437.
How does CEDAR GROVE WATERWORKS compare to other utilities in Wisconsin?
CEDAR GROVE WATERWORKS scores 38/100 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.