Alden (t) Sd #2 STP
Alden, NY · Erie County · Publicly Owned Treatment Works
- Average flow
- 0.005 MGD
- Design flow
- 0.02 MGD
- NPDES permit
- NY0021857
- Effective
- Permit expires
- July 2031
- Population served
- 140
- CWNS 2022
Alden (t) Sd #2 STP is a publicly owned wastewater treatment works in Alden, Erie County, New York treating an average of 0.005 million gallons per day against a permitted design capacity of 0.02 MGD, serving about 140 residents. It discharges under NPDES permit NY0021857 (effective), which expires in July 2031, with 123 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 123
- Effluent violations
- 38
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Alden (t) Sd #2 STP.
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Nearby wastewater treatment plants in New York
Alden · 4 mi away
0.17 MGD
Elma · 4 mi away
0.0033 MGD
Elma · 4 mi away
0.01 MGD
Elma · 4 mi away
0.0035 MGD
Elma · 5 mi away
0.0061 MGD
Darien Center · 10 mi away
0.02 MGD
Akron · 11 mi away
0.27 MGD
Attica · 15 mi away
0.52 MGD
Alden (t) Sd #2 STP: 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 September 29, 2025.