A81/100
WISCONSIN DELLS WATERWORKS — Water Quality Report 2026
Serving 3,232 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI1110113
Violations
8
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
4
Violations (last 5yr)
0
Unresolved
1
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: January 1, 2024 – January 22, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – July 18, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – July 18, 2023Enforcement: Resolving — corrective action underway
TIER 2Resolved
Violation related to Consumer Confidence Report
When: January 1, 2022 – June 30, 2023Rule: Consumer Confidence RuleEnforcement: Formal — state order issued
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 WISCONSIN DELLS WATERWORKS
Is WISCONSIN DELLS WATERWORKS water safe to drink?
WISCONSIN DELLS WATERWORKS water receives a grade of A (81/100), which is considered excellent. 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 WISCONSIN DELLS WATERWORKS detected?
1 contaminants were tested in WISCONSIN DELLS WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WISCONSIN DELLS WATERWORKS have any EPA violations?
Yes, WISCONSIN DELLS WATERWORKS has 8 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 WISCONSIN DELLS WATERWORKS serve?
WISCONSIN DELLS WATERWORKS serves approximately 3,232 people, Wisconsin. The system provides water to 1 community: Wisconsin Dells.
What type of water does WISCONSIN DELLS WATERWORKS provide?
WISCONSIN DELLS WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI1110113.
How does WISCONSIN DELLS WATERWORKS compare to other utilities in Wisconsin?
WISCONSIN DELLS WATERWORKS scores 81/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Wisconsin state page for a full comparison of water systems.