2700 S Belmont, Indianapolis, IN 46221 · Marion County · Publicly Owned Treatment Works
Indianapolis Belmont WWTP is a publicly owned wastewater treatment works in Indianapolis, Marion County, Indiana treating an average of 105.33 million gallons per day against a permitted design capacity of 125 MGD, serving about 959,530 residents. It discharges under NPDES permit IN0023183 (effective), which expires in May 2029, with 117 recorded violations in the last three years. EPA has recorded 3 formal enforcement actions naming the plant, the latest in July 2016.
One treatment structure or unit process identified at Indianapolis Belmont WWTP.
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See the full treatment train at Indianapolis Belmont WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Indianapolis Belmont WWTP in EPA's ICIS system.
Latest case · Jul 2016
City of Indianapolis
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty
EPA's description of the case:
“Address pretreatment program concerns”
Source: EPA ECHO, civil enforcement case 05-2012-0330.
Full case history with a free Klarifi account
Every action against Indianapolis Belmont WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
6 verified contacts for Indianapolis Belmont WWTP, with validated emails and direct phone numbers.
Unlock 6 verified contacts (3 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Indianapolis Belmont WWTP, plus the full compliance history and discharge data.
Avon · 8 mi away
2.1 MGD
Plainfield · 11 mi away
2.4 MGD
Waverly · 11 mi away
0.0067 MGD
Avon · 12 mi away
2.39 MGD
Mooresville · 13 mi away
1.5 MGD
New Whiteland · 13 mi away
0.47 MGD
Cumberland · 13 mi away
1.24 MGD
Brownsburg · 14 mi away
2.86 MGD
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 March 5, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms