A87/100
STREAMWOOD — Water Quality Report 2026
Serving 39,577 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0313060
Violations
5
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – August 16, 2022Enforcement: 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 STREAMWOOD
Is STREAMWOOD water safe to drink?
STREAMWOOD water receives a grade of A (87/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has STREAMWOOD detected?
69 contaminants were tested in STREAMWOOD's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does STREAMWOOD have any EPA violations?
Yes, STREAMWOOD has 5 EPA violation(s) on record, with the most recent in 2022. Violation types include Other, MR, MCL. 2 are health-based violations.
How many people does STREAMWOOD serve?
STREAMWOOD serves approximately 39,577 people, Illinois. The system provides water to 1 community: Streamwood.
What type of water does STREAMWOOD provide?
STREAMWOOD 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 IL0313060.
How does STREAMWOOD compare to other utilities in Illinois?
STREAMWOOD scores 87/100 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.