New Rochelle STP
New Rochelle, NY · Westchester County · Publicly Owned Treatment Works
- Average flow
- 9 MGD
- Design flow
- 13.6 MGD
- NPDES permit
- NY0026697
- Administratively continued
- Permit expires
- October 2017
- Population served
- 86,009
- CWNS 2022
New Rochelle STP is a publicly owned wastewater treatment works in New Rochelle, Westchester County, New York treating an average of 9 million gallons per day against a permitted design capacity of 13.6 MGD, serving about 86,009 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit NY0026697 (administratively continued), which expires in October 2017, with 1 recorded violation 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
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for New Rochelle STP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at New Rochelle STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New York
Mamaroneck · 3 mi away
11 MGD
Rye · 5 mi away
3.3 MGD
Yonkers · 7 mi away
55 MGD
Glen Cove · 8 mi away
—
Great Neck · 9 mi away
2.5 MGD
Queens · 9 mi away
57 MGD
Great Neck · 9 mi away
0.92 MGD
Bronx · 10 mi away
109 MGD
New Rochelle 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 May 21, 2025.