A91/100
OAKFIELD WATERWORKS — Water Quality Report 2026
Serving 1,058 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI4200475
Violations
9
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2019.
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 OAKFIELD WATERWORKS
Is OAKFIELD WATERWORKS water safe to drink?
OAKFIELD WATERWORKS water receives a grade of A (91/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has OAKFIELD WATERWORKS detected?
1 contaminants were tested in OAKFIELD WATERWORKS's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does OAKFIELD WATERWORKS have any EPA violations?
Yes, OAKFIELD WATERWORKS has 9 EPA violation(s) on record, with the most recent in 2019. Violation types include MON, MR, Other.
How many people does OAKFIELD WATERWORKS serve?
OAKFIELD WATERWORKS serves approximately 1,058 people, Wisconsin. The system provides water to 1 community: Oakfield.
What type of water does OAKFIELD WATERWORKS provide?
OAKFIELD WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI4200475.
How does OAKFIELD WATERWORKS compare to other utilities in Wisconsin?
OAKFIELD WATERWORKS scores 91/100 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.