A85/100
MOUNT VERNON CITY PWS — Water Quality Report 2026
Serving 16,990 people · Ohio
Water Source
Groundwater
County
—
System ID
OH4200812
Violations
3
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1996.
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 CITY PWS
Is MOUNT VERNON CITY PWS water safe to drink?
MOUNT VERNON CITY PWS water receives a grade of A (85/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has MOUNT VERNON CITY PWS detected?
66 contaminants were tested in MOUNT VERNON CITY PWS's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does MOUNT VERNON CITY PWS have any EPA violations?
Yes, MOUNT VERNON CITY PWS has 3 EPA violation(s) on record, with the most recent in 1996. Violation types include MCL. 3 are health-based violations.
How many people does MOUNT VERNON CITY PWS serve?
MOUNT VERNON CITY PWS serves approximately 16,990 people, Ohio.
What type of water does MOUNT VERNON CITY PWS provide?
MOUNT VERNON CITY PWS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OH4200812.
How does MOUNT VERNON CITY PWS compare to other utilities in Ohio?
MOUNT VERNON CITY PWS scores 85/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Ohio state page for a full comparison of water systems.