Bay Park Sewage Treatment Plant
2 Marjorie Ln, East Rockaway, NY 11518 · Nassau County · Publicly Owned Treatment Works
- Average flow
- 48.73 MGD
- Design flow
- 70 MGD
- NPDES permit
- NY0026450
- Administratively continued
- Permit expires
- January 2026
- Population served
- 584,105
- CWNS 2022
Bay Park Sewage Treatment Plant is a publicly owned wastewater treatment works in East Rockaway, Nassau County, New York treating an average of 48.73 million gallons per day against a permitted design capacity of 70 MGD, serving about 584,105 residents. It discharges under NPDES permit NY0026450 (administratively continued), which expires in January 2026, with 4 recorded violations in the last three years. EPA has recorded 5 formal enforcement actions naming the plant, the latest in December 2021.
Treatment technology
2 treatment structures and unit processes identified at Bay Park Sewage Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Bay Park Sewage Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 2
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 Bay Park Sewage Treatment Plant in EPA's ICIS system.
- Formal actions
- 5
- 1 since FY2020
- Penalties assessed
- $849,000
- all cases
- Compliance actions
- $4M
- required by EPA orders
- EPA inspections
- 3
- latest Nov 2009
Latest case · Dec 2021
Nassau County Department of Public Works
Administrative order · CWA, Effluent Limitations - NPDES Toxic & Pretreatment Effluent Standards · Final Order With Penalty · Penalty $1,500 · Compliance actions $250
EPA's description of the case:
“Facility failed to submit Annual Industrial Pretreatment Program Report for the 2020 reporting year within 60 days of the end of the reporting period as required by permit.”
Source: EPA ECHO, civil enforcement case 02-2022-3301.
Full case history with a free Klarifi account
Every action against Bay Park Sewage Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
5 verified contacts for Bay Park Sewage Treatment Plant, with validated emails and direct phone numbers.
Unlock 5 verified contacts (2 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Bay Park Sewage Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New York
Long Beach · 3 mi away
4.72 MGD
Atlantic Beach · 5 mi away
0.37 MGD
Jamaica · 8 mi away
74.6 MGD
Wantagh · 8 mi away
63.14 MGD
Rockaway Park · 9 mi away
18.8 MGD
Great Neck · 11 mi away
0.96 MGD
Brooklyn · 11 mi away
39.7 MGD
Great Neck · 12 mi away
2.54 MGD
Bay Park Sewage Treatment Plant: 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 January 23, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms