A94/100
OBLONG — Water Quality Report 2026
Serving 2,321 people · Illinois
Water Source
Purchased Groundwater
County
—
System ID
IL0330150
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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 OBLONG
Is OBLONG water safe to drink?
OBLONG water receives a grade of A (94/100), 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 OBLONG detected?
1 contaminants were tested in OBLONG's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does OBLONG have any EPA violations?
Yes, OBLONG has 3 EPA violation(s) on record, with the most recent in 2017. Violation types include Other.
How many people does OBLONG serve?
OBLONG serves approximately 2,321 people, Illinois. The system provides water to 1 community: Oblong.
What type of water does OBLONG provide?
OBLONG sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0330150.
How does OBLONG compare to other utilities in Illinois?
OBLONG scores 94/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Illinois state page for a full comparison of water systems.