B71/100
LEWISTOWN — Water Quality Report 2026
Serving 2,400 people · Illinois
Water Source
Groundwater
County
—
System ID
IL0570600
Violations
9
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.60 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2014.
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 LEWISTOWN
Is LEWISTOWN water safe to drink?
LEWISTOWN water receives a grade of B (71/100), which is considered good. Out of 2 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has LEWISTOWN detected?
2 contaminants were tested in LEWISTOWN's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does LEWISTOWN have any EPA violations?
Yes, LEWISTOWN has 9 EPA violation(s) on record, with the most recent in 2014. Violation types include Other, MCL, MR. 3 are health-based violations.
How many people does LEWISTOWN serve?
LEWISTOWN serves approximately 2,400 people, Illinois. The system provides water to 1 community: Lewistown.
What type of water does LEWISTOWN provide?
LEWISTOWN sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0570600.
How does LEWISTOWN compare to other utilities in Illinois?
LEWISTOWN scores 71/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Illinois state page for a full comparison of water systems.