Mount Vernon Wastewater Treatment Plant
3 Cougar Dr, Mount Vernon, OH 43050 · Knox County · Publicly Owned Treatment Works
- Average flow
- 3.58 MGD
- Design flow
- 5 MGD
- NPDES permit
- OH0026662
- Effective
- Permit expires
- December 2030
- Population served
- 16,894
- CWNS 2022
Mount Vernon Wastewater Treatment Plant is a publicly owned wastewater treatment works in Mount Vernon, Knox County, Ohio treating an average of 3.58 million gallons per day against a permitted design capacity of 5 MGD, serving about 16,894 residents. It discharges under NPDES permit OH0026662 (effective), which expires in December 2030, with 102 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Mount Vernon Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Mount Vernon Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 102
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Mount Vernon Wastewater Treatment Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Mount Vernon Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Ohio
Gambier · 4 mi away
0.97 MGD
Mount Vernon · 6 mi away
0.02 MGD
Mount Vernon · 8 mi away
0.71 MGD
Fredericktown · 8 mi away
0.21 MGD
Utica · 11 mi away
0.54 MGD
Danville · 11 mi away
0.25 MGD
Sparta · 12 mi away
0.02 MGD
Chesterville · 13 mi away
0.04 MGD
Mount Vernon Wastewater Treatment Plant: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated April 5, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms