Oyster Bay WRRF
15 Bay Avenue, Oyster Bay, NY 11771 · Nassau County · Publicly Owned Treatment Works
- Average flow
- 1.03 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 1.03 million gallons per day against a permitted design capacity of 1.8 MGD, serving about 8,831 residents. It discharges under NPDES permit NY0021822 (effective), which expires in March 2028, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in December 2016.
Treatment technology
One treatment structure or unit process identified at Oyster Bay WRRF.
Available with a free Klarifi account
See the full treatment train at Oyster Bay WRRF: structures, unit processes and planned upgrades, with exact unit counts.
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.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Oyster Bay WRRF in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $1,500
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Dec 2016
Oyster Bay Sewer District
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $1,500
EPA's description of the case:
“On August 30, 2016, EPA conducted an inspection of the District. The District is required, pursuant to its SPDES permit to have written O&M procedures for its sanitary sewer system. The District was…”
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Source: EPA ECHO, civil enforcement case 02-2017-3031.
Full case history with a free Klarifi account
Every action against Oyster Bay WRRF with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
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
1.56 MGD
Glen Cove · 6 mi away
—
Northport · 9 mi away
0.19 MGD
Rye · 10 mi away
3.58 MGD
Great Neck · 11 mi away
2.54 MGD
Mamaroneck · 12 mi away
12.11 MGD
New Rochelle · 13 mi away
11.16 MGD
Great Neck · 13 mi away
0.96 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 October 26, 2026; facility record last updated May 22, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms