F0/100
ELKHORN WATERWORKS — Water Quality Report 2026
Serving 10,317 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI2650062
Violations
76
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.46 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.014 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: November 1, 2021 – March 21, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed to conduct Level 1 Assessment
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 28, 2021 – March 18, 2022Rule: 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 ELKHORN WATERWORKS
Is ELKHORN WATERWORKS water safe to drink?
ELKHORN WATERWORKS water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 76 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ELKHORN WATERWORKS detected?
32 contaminants were tested in ELKHORN 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 ELKHORN WATERWORKS have any EPA violations?
Yes, ELKHORN WATERWORKS has 76 EPA violation(s) on record, with the most recent in 2021. Violation types include Other, MR, MCL. 12 are health-based violations.
How many people does ELKHORN WATERWORKS serve?
ELKHORN WATERWORKS serves approximately 10,317 people, Wisconsin. The system provides water to 1 community: Elkhorn.
What type of water does ELKHORN WATERWORKS provide?
ELKHORN WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI2650062.
How does ELKHORN WATERWORKS compare to other utilities in Wisconsin?
ELKHORN WATERWORKS scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Wisconsin state page for a full comparison of water systems.