Warwick Sewer District 1 STP
Warwick, NY · Orange County · Publicly Owned Treatment Works
- Average flow
- 0.14 MGD
- Design flow
- 0.43 MGD
- NPDES permit
- NY0021890
- Administratively continued
- Permit expires
- July 2026
- Population served
- 2,909
- CWNS 2022
Warwick Sewer District 1 STP is a publicly owned wastewater treatment works in Warwick, Orange County, New York treating an average of 0.14 million gallons per day against a permitted design capacity of 0.43 MGD, serving about 2,909 residents. Treatment on site includes carrousels / oxidation ditches. It discharges under NPDES permit NY0021890 (administratively continued), which expires in July 2026, with 59 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 59
- Effluent violations
- 40
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Warwick Sewer District 1 STP.
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Nearby wastewater treatment plants in New York
Warwick · 4 mi away
0.62 MGD
Florida · 6 mi away
0.09 MGD
Tuxedo Park · 7 mi away
0.09 MGD
Monroe · 8 mi away
0.8 MGD
Harriman · 9 mi away
4.53 MGD
Goshen · 10 mi away
0.6 MGD
Slate Hill · 11 mi away
0.01 MGD
Washingtonville · 11 mi away
0.0054 MGD
Warwick Sewer District 1 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 November 28, 2025.