B69/100
WALWORTH WATERWORKS — Water Quality Report 2026
Serving 2,304 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI2650149
Violations
20
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.006 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
4
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2024 – December 19, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – July 18, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – July 18, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – July 19, 2021Enforcement: 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 WALWORTH WATERWORKS
Is WALWORTH WATERWORKS water safe to drink?
WALWORTH WATERWORKS water receives a grade of B (69/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WALWORTH WATERWORKS detected?
1 contaminants were tested in WALWORTH WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WALWORTH WATERWORKS have any EPA violations?
Yes, WALWORTH WATERWORKS has 20 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other, TT. 2 are health-based violations.
How many people does WALWORTH WATERWORKS serve?
WALWORTH WATERWORKS serves approximately 2,304 people, Wisconsin. The system provides water to 1 community: Walworth.
What type of water does WALWORTH WATERWORKS provide?
WALWORTH WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI2650149.
How does WALWORTH WATERWORKS compare to other utilities in Wisconsin?
WALWORTH WATERWORKS scores 69/100 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.