A86/100
OMRO WATERWORKS — Water Quality Report 2026
Serving 3,629 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI4710357
Violations
4
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
strontium | 1559.21 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – August 10, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – August 10, 2023Enforcement: 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 OMRO WATERWORKS
Is OMRO WATERWORKS water safe to drink?
OMRO WATERWORKS water receives a grade of A (86/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has OMRO WATERWORKS detected?
69 contaminants were tested in OMRO WATERWORKS's water. Notable contaminants include Lead (90th percentile), strontium. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does OMRO WATERWORKS have any EPA violations?
Yes, OMRO WATERWORKS has 4 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MCL, MR. 1 are health-based violations.
How many people does OMRO WATERWORKS serve?
OMRO WATERWORKS serves approximately 3,629 people, Wisconsin. The system provides water to 1 community: Omro.
What type of water does OMRO WATERWORKS provide?
OMRO WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI4710357.
How does OMRO WATERWORKS compare to other utilities in Wisconsin?
OMRO WATERWORKS scores 86/100 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.