Mentone Municipal Sewage Treatment Plant
State Route 19 & Etna Street 1/4 Miles North, Mentone, IN 46539 · Kosciusko County · Publicly Owned Treatment Works
- Average flow
- 0.07 MGD
- Design flow
- 0.2 MGD
- NPDES permit
- IN0040347
- Effective
- Permit expires
- February 2029
- Population served
- 943
- CWNS 2022
Mentone Municipal Sewage Treatment Plant is a publicly owned wastewater treatment works in Mentone, Kosciusko County, Indiana treating an average of 0.07 million gallons per day against a permitted design capacity of 0.2 MGD, serving about 943 residents. It discharges under NPDES permit IN0040347 (effective), which expires in February 2029, with 7 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Mentone Municipal Sewage Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Mentone Municipal Sewage Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Mentone Municipal Sewage Treatment Plant.
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Nearby wastewater treatment plants in Indiana
Etna Green · 7 mi away
0.03 MGD
Bourbon · 8 mi away
0.24 MGD
Claypool · 9 mi away
0.08 MGD
Akron · 9 mi away
0.18 MGD
Silver Lake · 11 mi away
0.07 MGD
Warsaw · 11 mi away
3.23 MGD
Rochester · 11 mi away
0.6 MGD
Argos · 11 mi away
0.12 MGD
Mentone Municipal Sewage 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 November 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms