(t) Friendship STP
4 E Main St, PO Box 177, Friendship, NY 14739 · Allegany County · Publicly Owned Treatment Works
- Average flow
- 0.12 MGD
- Design flow
- 0.29 MGD
- NPDES permit
- NY0029301
- Effective
- Permit expires
- February 2031
- Population served
- 1,495
- CWNS 2022
(t) Friendship STP is a publicly owned wastewater treatment works in Friendship, Allegany County, New York treating an average of 0.12 million gallons per day against a permitted design capacity of 0.29 MGD, serving about 1,495 residents. It discharges under NPDES permit NY0029301 (effective), which expires in February 2031, with 7 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at (t) Friendship STP.
Available with a free Klarifi account
See the full treatment train at (t) Friendship STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at (t) Friendship STP.
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Nearby wastewater treatment plants in New York
Belmont · 5 mi away
0.17 MGD
Cuba · 8 mi away
0.44 MGD
Wellsville · 10 mi away
1.17 MGD
Bolivar · 10 mi away
0.29 MGD
Houghton · 15 mi away
0.17 MGD
Alfred · 18 mi away
0.41 MGD
Franklinville · 19 mi away
0.69 MGD
Olean · 19 mi away
3.73 MGD
(t) Friendship 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 October 26, 2026; facility record last updated November 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms