Indianapolis Belmont WWTP
Indianapolis, IN · Marion County · Publicly Owned Treatment Works
- Average flow
- 83.83 MGD
- Design flow
- 125 MGD
- NPDES permit
- IN0023183
- Effective
- Permit expires
- May 2029
- Population served
- 959,530
- CWNS 2022
Indianapolis Belmont WWTP is a publicly owned wastewater treatment works in Indianapolis, Marion County, Indiana treating an average of 83.83 million gallons per day against a permitted design capacity of 125 MGD, serving about 959,530 residents. Treatment on site includes biogas balloons. It discharges under NPDES permit IN0023183 (effective), which expires in May 2029, with 116 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas balloons
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Compliance snapshot (last 3 years)
- Total violations
- 116
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
6 verified contacts for Indianapolis Belmont WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Indianapolis Belmont WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Indiana
Avon · 8 mi away
1.82 MGD
Plainfield · 11 mi away
1.77 MGD
Waverly · 11 mi away
0.0058 MGD
Avon · 12 mi away
2.09 MGD
Mooresville · 13 mi away
1.19 MGD
New Whiteland · 13 mi away
0.26 MGD
Cumberland · 13 mi away
0.75 MGD
Brownsburg · 14 mi away
2.24 MGD
Indianapolis Belmont 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 March 5, 2025.