A88/100
ELDORADO — Water Quality Report 2026
Serving 4,715 people · Illinois
Water Source
Purchased Groundwater
County
—
System ID
IL1655030
Violations
5
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
1
Violation (last 5yr)
1
Unresolved
1
Health-Related
TIER 2Unresolved
Treatment technique violation
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 ELDORADO
Is ELDORADO water safe to drink?
ELDORADO water receives a grade of A (88/100), which is considered excellent. 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 ELDORADO detected?
31 contaminants were tested in ELDORADO's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ELDORADO have any EPA violations?
Yes, ELDORADO has 5 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, Other, MR. 1 are health-based violations.
How many people does ELDORADO serve?
ELDORADO serves approximately 4,715 people, Illinois. The system provides water to 1 community: Eldorado.
What type of water does ELDORADO provide?
ELDORADO sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1655030.
How does ELDORADO compare to other utilities in Illinois?
ELDORADO scores 88/100 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.