B64/100
DELAVAN WATERWORKS — Water Quality Report 2026
Serving 8,451 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI2650113
Violations
33
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.010 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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 DELAVAN WATERWORKS
Is DELAVAN WATERWORKS water safe to drink?
DELAVAN WATERWORKS water receives a grade of B (64/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has DELAVAN WATERWORKS detected?
31 contaminants were tested in DELAVAN WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does DELAVAN WATERWORKS have any EPA violations?
Yes, DELAVAN WATERWORKS has 33 EPA violation(s) on record, with the most recent in 2017. Violation types include MR, Other.
How many people does DELAVAN WATERWORKS serve?
DELAVAN WATERWORKS serves approximately 8,451 people, Wisconsin. The system provides water to 1 community: Delavan.
What type of water does DELAVAN WATERWORKS provide?
DELAVAN WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI2650113.
How does DELAVAN WATERWORKS compare to other utilities in Wisconsin?
DELAVAN WATERWORKS scores 64/100 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.