F16/100
ONEILL, CITY OF — Water Quality Report 2026
Serving 3,705 people · Nebraska
Water Source
Groundwater
County
—
System ID
NE3108904
Violations
17
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 ONEILL, CITY OF
Is ONEILL, CITY OF water safe to drink?
ONEILL, CITY OF water receives a grade of F (16/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 17 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ONEILL, CITY OF detected?
31 contaminants were tested in ONEILL, CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ONEILL, CITY OF have any EPA violations?
Yes, ONEILL, CITY OF has 17 EPA violation(s) on record, with the most recent in 2018. Violation types include MCL, Other. 16 are health-based violations.
How many people does ONEILL, CITY OF serve?
ONEILL, CITY OF serves approximately 3,705 people, Nebraska. The system provides water to 1 community: O'Neill.
What type of water does ONEILL, CITY OF provide?
ONEILL, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NE3108904.
How does ONEILL, CITY OF compare to other utilities in Nebraska?
ONEILL, CITY OF scores 16/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Nebraska state page for a full comparison of water systems.