F0/100
CARLINVILLE — Water Quality Report 2026
Serving 6,598 people · Illinois
Water Source
Surface Water
County
—
System ID
IL1170150
Violations
51
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2023 – April 30, 2023Rule: Stage 1 DBPREnforcement: 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 CARLINVILLE
Is CARLINVILLE water safe to drink?
CARLINVILLE water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 51 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CARLINVILLE detected?
31 contaminants were tested in CARLINVILLE's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CARLINVILLE have any EPA violations?
Yes, CARLINVILLE has 51 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, TT, MCL. 29 are health-based violations.
How many people does CARLINVILLE serve?
CARLINVILLE serves approximately 6,598 people, Illinois. The system provides water to 1 community: Carlinville.
What type of water does CARLINVILLE provide?
CARLINVILLE 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 IL1170150.
How does CARLINVILLE compare to other utilities in Illinois?
CARLINVILLE 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.