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F0/100

MOUNT ZION — Water Quality Report 2026

Serving 5,833 people · Illinois

Water Source
Purchased Surface Water
County
—
System ID
IL1150350
Violations
37

Contaminant Test Results

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

EPA Violation History

10

Violations (last 5yr)

0

Unresolved

8

Health-Related

TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2024 – December 31, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

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

Exceeded the Maximum Contaminant Level (running average)

When: April 1, 2024 – June 30, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2024 – March 31, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2022 – March 31, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: December 30, 2021 – January 4, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
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: December 30, 2021 – February 10, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2021 – December 31, 2021Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved

Consumer confidence report — late or incomplete delivery

When: June 6, 2021 – June 30, 2022Rule: Ground Water RuleEnforcement: 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 MOUNT ZION

Is MOUNT ZION water safe to drink?

MOUNT ZION water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 37 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has MOUNT ZION detected?

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

Does MOUNT ZION have any EPA violations?

Yes, MOUNT ZION has 37 EPA violation(s) on record, with the most recent in 2024. Violation types include MCL, Other, MR. 29 are health-based violations.

How many people does MOUNT ZION serve?

MOUNT ZION serves approximately 5,833 people, Illinois. The system provides water to 1 community: Mount Zion.

What type of water does MOUNT ZION provide?

MOUNT ZION sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is IL1150350.

How does MOUNT ZION compare to other utilities in Illinois?

MOUNT ZION 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.

Cities Served

Mount Zion