TapSafetyReport
B74/100

VANDALIA — Water Quality Report 2026

Serving 7,616 people · Illinois

Water Source
Surface Water
County
—
System ID
IL0510350
Violations
15

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.005 mg/L0.015 mg/LAbove Goal

EPA Violation History

5

Violations (last 5yr)

2

Unresolved

1

Health-Related

TIER 3Unresolved

Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 2, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved

Failed to issue ongoing public notification

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 3Resolved

Failed to conduct Level 2 Assessment

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: February 8, 2024 – April 24, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2023 – June 30, 2023Enforcement: 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 VANDALIA

Is VANDALIA water safe to drink?

VANDALIA water receives a grade of B (74/100), which is considered good. Out of 34 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.

What contaminants has VANDALIA detected?

34 contaminants were tested in VANDALIA's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does VANDALIA have any EPA violations?

Yes, VANDALIA has 15 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, MR, MCL. 2 are health-based violations.

How many people does VANDALIA serve?

VANDALIA serves approximately 7,616 people, Illinois. The system provides water to 1 community: Vandalia.

What type of water does VANDALIA provide?

VANDALIA 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 IL0510350.

How does VANDALIA compare to other utilities in Illinois?

VANDALIA scores 74/100 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.

Cities Served

Vandalia