A80/100
EAST ALTON — Water Quality Report 2026
Serving 5,786 people · Illinois
Water Source
Groundwater
County
—
System ID
IL1190200
Violations
4
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.017 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.016 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
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 EAST ALTON
Is EAST ALTON water safe to drink?
EAST ALTON water receives a grade of A (80/100), which is considered excellent. Out of 31 contaminants tested, 2 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has EAST ALTON detected?
31 contaminants were tested in EAST ALTON's water. Notable contaminants include PFOS, PFOA. 2 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does EAST ALTON have any EPA violations?
Yes, EAST ALTON has 4 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR.
How many people does EAST ALTON serve?
EAST ALTON serves approximately 5,786 people, Illinois. The system provides water to 1 community: East Alton.
What type of water does EAST ALTON provide?
EAST ALTON sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1190200.
How does EAST ALTON compare to other utilities in Illinois?
EAST ALTON scores 80/100 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.