Oyster Bay WRRF
Oyster Bay, NY · Nassau County · Publicly Owned Treatment Works
- Average flow
- 1.02 MGD
- Design flow
- 1.8 MGD
- NPDES permit
- NY0021822
- Effective
- Permit expires
- March 2028
- Population served
- 8,831
- CWNS 2022
Oyster Bay WRRF is a publicly owned wastewater treatment plant in Oyster Bay, Nassau County, New York treating an average of 1.02 million gallons per day against a permitted design capacity of 1.8 MGD, serving about 8,831 residents. Treatment on site includes biogas silos. It discharges under NPDES permit NY0021822 (effective), which expires in March 2028, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas silos
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Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Oyster Bay WRRF, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Oyster Bay WRRF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New York
Huntington · 6 mi away
1.58 MGD
Glen Cove · 6 mi away
—
Northport · 9 mi away
0.19 MGD
Rye · 10 mi away
3.3 MGD
Great Neck · 11 mi away
2.5 MGD
Mamaroneck · 12 mi away
11 MGD
New Rochelle · 13 mi away
9 MGD
Great Neck · 13 mi away
0.92 MGD
Oyster Bay WRRF: 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 22, 2025.