Haverstraw Joint Regional STP
West Haverstraw, NY · Rockland County · Publicly Owned Treatment Works
- Average flow
- 3.6 MGD
- Design flow
- 8 MGD
- NPDES permit
- NY0028533
- Administratively continued
- Permit expires
- January 2017
- Population served
- 37,724
- CWNS 2022
Haverstraw Joint Regional STP is a publicly owned wastewater treatment works in West Haverstraw, Rockland County, New York treating an average of 3.6 million gallons per day against a permitted design capacity of 8 MGD, serving about 37,724 residents. Treatment on site includes clarifiers. It discharges under NPDES permit NY0028533 (administratively continued), which expires in January 2017, with 0 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
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Haverstraw Joint Regional STP.
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Nearby wastewater treatment plants in New York
Stony Point · 1 mi away
0.84 MGD
Buchanan · 4 mi away
0.24 MGD
Peekskill · 6 mi away
5.17 MGD
Ossining · 7 mi away
3.32 MGD
Fort Montgomery · 8 mi away
0.07 MGD
Harriman · 11 mi away
4.53 MGD
Tuxedo Park · 11 mi away
0.09 MGD
Yorktown Hgts · 12 mi away
1 MGD
Haverstraw Joint Regional 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 July 2, 2025.