C47/100
HORICON WATERWORKS — Water Quality Report 2026
Serving 3,682 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI1140146
Violations
14
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Violation related to Consumer Confidence Report
When: January 1, 2023 – January 18, 2023Rule: Consumer Confidence RuleEnforcement: 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 HORICON WATERWORKS
Is HORICON WATERWORKS water safe to drink?
HORICON WATERWORKS water receives a grade of C (47/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 14 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has HORICON WATERWORKS detected?
31 contaminants were tested in HORICON WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does HORICON WATERWORKS have any EPA violations?
Yes, HORICON WATERWORKS has 14 EPA violation(s) on record, with the most recent in 2023. Violation types include TT, MR, MCL. 9 are health-based violations.
How many people does HORICON WATERWORKS serve?
HORICON WATERWORKS serves approximately 3,682 people, Wisconsin. The system provides water to 1 community: Horicon.
What type of water does HORICON WATERWORKS provide?
HORICON WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI1140146.
How does HORICON WATERWORKS compare to other utilities in Wisconsin?
HORICON WATERWORKS scores 47/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Wisconsin state page for a full comparison of water systems.