A88/100
IL AMERICAN-ALTON — Water Quality Report 2026
Serving 46,127 people · Illinois
Water Source
Surface Water
County
—
System ID
IL1195150
Violations
2
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 300.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1999.
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 IL AMERICAN-ALTON
Is IL AMERICAN-ALTON water safe to drink?
IL AMERICAN-ALTON water receives a grade of A (88/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has IL AMERICAN-ALTON detected?
69 contaminants were tested in IL AMERICAN-ALTON's water. Notable contaminants include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does IL AMERICAN-ALTON have any EPA violations?
Yes, IL AMERICAN-ALTON has 2 EPA violation(s) on record, with the most recent in 1999. Violation types include MCL, MR. 1 are health-based violations.
How many people does IL AMERICAN-ALTON serve?
IL AMERICAN-ALTON serves approximately 46,127 people, Illinois. The system provides water to 1 community: Alton.
What type of water does IL AMERICAN-ALTON provide?
IL AMERICAN-ALTON sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is IL1195150.
How does IL AMERICAN-ALTON compare to other utilities in Illinois?
IL AMERICAN-ALTON 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.