A89/100
ROSEMONT — Water Quality Report 2026
Serving 3,952 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0312760
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.027 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 2, 2025Rule: 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 ROSEMONT
Is ROSEMONT water safe to drink?
ROSEMONT water receives a grade of A (89/100), which is considered excellent. Out of 31 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ROSEMONT detected?
31 contaminants were tested in ROSEMONT's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does ROSEMONT have any EPA violations?
Yes, ROSEMONT has 3 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, MR.
How many people does ROSEMONT serve?
ROSEMONT serves approximately 3,952 people, Illinois. The system provides water to 1 community: Rosemont.
What type of water does ROSEMONT provide?
ROSEMONT sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is IL0312760.
How does ROSEMONT compare to other utilities in Illinois?
ROSEMONT scores 89/100 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.