B74/100
LANCASTER WATERWORKS — Water Quality Report 2026
Serving 3,868 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI1220107
Violations
11
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
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 1, 2022 – March 31, 2022Rule: Total Coliform 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 LANCASTER WATERWORKS
Is LANCASTER WATERWORKS water safe to drink?
LANCASTER WATERWORKS water receives a grade of B (74/100), 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 LANCASTER WATERWORKS detected?
31 contaminants were tested in LANCASTER WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does LANCASTER WATERWORKS have any EPA violations?
Yes, LANCASTER WATERWORKS has 11 EPA violation(s) on record, with the most recent in 2022. Violation types include MON, MR, MCL. 3 are health-based violations.
How many people does LANCASTER WATERWORKS serve?
LANCASTER WATERWORKS serves approximately 3,868 people, Wisconsin. The system provides water to 1 community: Lancaster.
What type of water does LANCASTER WATERWORKS provide?
LANCASTER WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI1220107.
How does LANCASTER WATERWORKS compare to other utilities in Wisconsin?
LANCASTER WATERWORKS scores 74/100 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.