F0/100
MOUNT VERNON WATER WORKS — Water Quality Report 2026
Serving 6,426 people · Indiana
Water Source
Surface Water
County
—
System ID
IN5265006
Violations
183
Contaminant Test Results
EPA Violation History
3
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 1, 2025 – August 31, 2025Rule: Total Coliform RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – July 31, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 1, 2022 – September 30, 2022Rule: Total Coliform 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 VERNON WATER WORKS
Is MOUNT VERNON WATER WORKS water safe to drink?
MOUNT VERNON WATER WORKS water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 183 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MOUNT VERNON WATER WORKS detected?
31 contaminants were tested in MOUNT VERNON WATER WORKS's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does MOUNT VERNON WATER WORKS have any EPA violations?
Yes, MOUNT VERNON WATER WORKS has 183 EPA violation(s) on record, with the most recent in 2025. Violation types include MON, Other, MR. 37 are health-based violations.
How many people does MOUNT VERNON WATER WORKS serve?
MOUNT VERNON WATER WORKS serves approximately 6,426 people, Indiana. The system provides water to 1 community: Mount Vernon.
What type of water does MOUNT VERNON WATER WORKS provide?
MOUNT VERNON WATER WORKS 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 IN5265006.
How does MOUNT VERNON WATER WORKS compare to other utilities in Indiana?
MOUNT VERNON WATER WORKS scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Indiana state page for a full comparison of water systems.