B61/100
CORNELL WATERWORKS — Water Quality Report 2026
Serving 1,390 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI6090458
Violations
12
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: June 1, 2023 – August 7, 2024Rule: Ground Water 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 CORNELL WATERWORKS
Is CORNELL WATERWORKS water safe to drink?
CORNELL WATERWORKS water receives a grade of B (61/100), which is considered good. Out of 21 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CORNELL WATERWORKS detected?
21 contaminants were tested in CORNELL WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CORNELL WATERWORKS have any EPA violations?
Yes, CORNELL WATERWORKS has 12 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MON, TT. 6 are health-based violations.
How many people does CORNELL WATERWORKS serve?
CORNELL WATERWORKS serves approximately 1,390 people, Wisconsin. The system provides water to 1 community: Cornell.
What type of water does CORNELL WATERWORKS provide?
CORNELL WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI6090458.
How does CORNELL WATERWORKS compare to other utilities in Wisconsin?
CORNELL WATERWORKS scores 61/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Wisconsin state page for a full comparison of water systems.