Olean (c) WWTP
Olean, NY · Cattaraugus County · Publicly Owned Treatment Works
- Average flow
- 2.3 MGD
- Design flow
- 7 MGD
- NPDES permit
- NY0027162
- Administratively continued
- Permit expires
- April 2022
- Population served
- 20,387
- CWNS 2022
Olean (c) WWTP is a publicly owned wastewater treatment works in Olean, Cattaraugus County, New York treating an average of 2.3 million gallons per day against a permitted design capacity of 7 MGD, serving about 20,387 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit NY0027162 (administratively continued), which expires in April 2022, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for Olean (c) WWTP, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Olean (c) WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New York
Limestone · 10 mi away
0.11 MGD
Cuba · 13 mi away
0.21 MGD
Bolivar · 14 mi away
0.1 MGD
Salamanca · 16 mi away
0.67 MGD
Franklinville · 18 mi away
0.09 MGD
Ellicottville · 18 mi away
—
Friendship · 19 mi away
0.05 MGD
Little Valley · 21 mi away
0.06 MGD
Olean (c) WWTP: 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 March 16, 2025.