Erie County Southtowns Sewage Treatment Plant
Buffalo, NY · Erie County · Publicly Owned Treatment Works
- Average flow
- 9.5 MGD
- Design flow
- 16 MGD
- NPDES permit
- NY0095401
- Administratively continued
- Permit expires
- September 2017
- Population served
- 139,037
- CWNS 2022
Erie County Southtowns Sewage Treatment Plant is a publicly owned wastewater treatment works in Buffalo, Erie County, New York treating an average of 9.5 million gallons per day against a permitted design capacity of 16 MGD, serving about 139,037 residents. Treatment on site includes clarifiers. It discharges under NPDES permit NY0095401 (administratively continued), which expires in September 2017, with 61 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 61
- Effluent violations
- 59
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Erie County Southtowns Sewage Treatment Plant.
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Buffalo · 10 mi away
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Elma · 11 mi away
0.0035 MGD
Elma · 12 mi away
0.0033 MGD
Elma · 13 mi away
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Angola · 14 mi away
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Tonawanda · 15 mi away
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Alden · 16 mi away
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Erie County Southtowns Sewage 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 September 11, 2026; facility record last updated May 21, 2025.