Montpelier WWTP
Montpelier, IN · Blackford County · Publicly Owned Treatment Works
- Average flow
- 0.16 MGD
- Design flow
- 0.28 MGD
- NPDES permit
- IN0020117
- Effective
- Permit expires
- February 2031
- Population served
- 2,303
- CWNS 2022
Montpelier WWTP is a publicly owned wastewater treatment works in Montpelier, Blackford County, Indiana treating an average of 0.16 million gallons per day against a permitted design capacity of 0.28 MGD, serving about 2,303 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IN0020117 (effective), which expires in February 2031, with 28 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 28
- Effluent violations
- 24
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Montpelier WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Montpelier WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Indiana
Pennville · 9 mi away
0.05 MGD
Hartford City · 10 mi away
0.84 MGD
Warren · 11 mi away
0.29 MGD
Van Buren · 11 mi away
0.06 MGD
Upland · 12 mi away
0.3 MGD
Hartford City · 13 mi away
0.01 MGD
Dunkirk · 13 mi away
0.47 MGD
Bluffton · 14 mi away
1.14 MGD
Montpelier WWTP: 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 September 11, 2026; facility record last updated November 7, 2025.