Windham Wastewater Treatment Plant
South St @ Co Rte 12 & St Rte 23, Windham, NY 12496 · Greene County · Publicly Owned Treatment Works
- Average flow
- 0.27 MGD
- Design flow
- 0.45 MGD
- NPDES permit
- NY0262935
- Effective
- Permit expires
- November 2029
- Population served
- 367
- CWNS 2022
Windham Wastewater Treatment Plant is a publicly owned wastewater treatment works in Windham, Greene County, New York treating an average of 0.27 million gallons per day against a permitted design capacity of 0.45 MGD, serving about 367 residents. It discharges under NPDES permit NY0262935 (effective), which expires in November 2029, with 15 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Windham Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Windham Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 15
- Effluent violations
- 9
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Windham Wastewater Treatment Plant.
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Windham 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 April 24, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms