F0/100
ALTO PASS WATER DISTRICT — Water Quality Report 2026
Serving 1,015 people · Illinois
Water Source
Purchased Groundwater
County
—
System ID
IL1815150
Violations
41
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
No violations in the past 5 years
Full EPA compliance since 2016.
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 ALTO PASS WATER DISTRICT
Is ALTO PASS WATER DISTRICT water safe to drink?
ALTO PASS WATER DISTRICT water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 41 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ALTO PASS WATER DISTRICT detected?
1 contaminants were tested in ALTO PASS WATER DISTRICT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ALTO PASS WATER DISTRICT have any EPA violations?
Yes, ALTO PASS WATER DISTRICT has 41 EPA violation(s) on record, with the most recent in 2016. Violation types include MR, MCL, Other. 33 are health-based violations.
How many people does ALTO PASS WATER DISTRICT serve?
ALTO PASS WATER DISTRICT serves approximately 1,015 people, Illinois.
What type of water does ALTO PASS WATER DISTRICT provide?
ALTO PASS WATER DISTRICT sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1815150.
How does ALTO PASS WATER DISTRICT compare to other utilities in Illinois?
ALTO PASS WATER DISTRICT scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Illinois state page for a full comparison of water systems.