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Public water system record

Mount Vernon City PWS

Serves Mount Vernon and South Mount Vernon, Knox County, OH · 16,990 people served

Federal records show no health-based violations and 2 monitoring/reporting issues for Mount Vernon City PWS in the last ten years. At least one of these issues remains unresolved.

  • OH4200812
  • MOUNT VERNON
  • OH
  • 16,990 served

System profile

Source water Groundwater
ZIP 43050
EPA system ID OH4200812

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
2

Key facts

  • Mount Vernon City PWS draws water from 2 wells.
  • Record on file since 1992, with 3 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 4,268 unknown out of 6,729 service lines.

Check whether Mount Vernon City PWS serves your address

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016.

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Consumer Confidence Rule
OTHER
 Dec 11, 2025 Active
LEAD AND COPPER RULE REVISIONS
RPT
 Jul 2, 2025 Active

Full record since 1992

EPA's records for Mount Vernon City PWS go back to 1992. Before October 19, 2016 they list 3 health-based violations (3 resolved) and no monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 3 0
2020s 0 2

Most recent health-based violation before October 19, 2016: Total Coliform, began August 1996, Resolved.

Show all 3 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Aug 1, 1996 Resolved
Total Coliform
Contaminant limit exceeded
 Oct 1, 1992 Resolved
Total Coliform (acute)
Contaminant limit exceeded
 Oct 1, 1992 Resolved

Where the water comes from

Mount Vernon City PWS draws water from 2 wells. 2 other community water systems buy water from Mount Vernon City PWS.

Community systems that buy water from it

Annual water quality report

Mount Vernon City PWS must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Ohio.

Certified drinking water labs by state EPA guidance for private wells