Williamsport Wastewater Treatment Plant
Old River Rd, Williamsport, IN 47993 · Warren County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.3 MGD
- NPDES permit
- IN0024864
- Effective
- Permit expires
- October 2028
- Population served
- 1,950
- CWNS 2022
Williamsport Wastewater Treatment Plant is a publicly owned wastewater treatment works in Williamsport, Warren County, Indiana, serving about 1,950 residents. It discharges under NPDES permit IN0024864 (effective), which expires in October 2028, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Williamsport Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Williamsport Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Williamsport Wastewater Treatment Plant.
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Nearby wastewater treatment plants in Indiana
Attica · 1 mi away
0.24 MGD
West Lebanon · 7 mi away
0.08 MGD
Pine Village · 12 mi away
0.01 MGD
Covington · 12 mi away
0.23 MGD
Veedersburg · 13 mi away
0.38 MGD
Wingate · 14 mi away
0.02 MGD
Hillsboro · 14 mi away
0.03 MGD
Oxford · 16 mi away
0.06 MGD
Williamsport 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 August 4, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms