A86/100
RIVERWOODS — Water Quality Report 2026
Serving 3,618 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0971450
Violations
7
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: 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 RIVERWOODS
Is RIVERWOODS water safe to drink?
RIVERWOODS water receives a grade of A (86/100), 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 RIVERWOODS detected?
31 contaminants were tested in RIVERWOODS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does RIVERWOODS have any EPA violations?
Yes, RIVERWOODS has 7 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, MON, TT. 1 are health-based violations.
How many people does RIVERWOODS serve?
RIVERWOODS serves approximately 3,618 people, Illinois. The system provides water to 1 community: Riverwoods.
What type of water does RIVERWOODS provide?
RIVERWOODS 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 IL0971450.
How does RIVERWOODS compare to other utilities in Illinois?
RIVERWOODS scores 86/100 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.