Oakridge STP
400 Oakridge Dr, South Salem, NY 10590 · Westchester County · Publicly Owned Treatment Works
- Average flow
- 0.03 MGD
- Design flow
- 0.08 MGD
- NPDES permit
- NY0030767
- Effective
- Permit expires
- April 2031
- Population served
- —
- CWNS 2022
Oakridge STP is a publicly owned wastewater treatment works in South Salem, Westchester County, New York treating an average of 0.03 million gallons per day against a permitted design capacity of 0.08 MGD. It discharges under NPDES permit NY0030767 (effective), which expires in April 2031, with 9 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Oakridge STP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 9
- Effluent violations
- 9
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 Oakridge STP in EPA's ICIS system.
- Formal actions
- 0
- none on record
- EPA inspections
- 1
- latest Apr 2008
No formal federal enforcement case is on record for this plant.
Full case history with a free Klarifi account
Every action against Oakridge STP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Oakridge STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in New York
Goldens Bridge · 10 mi away
0.03 MGD
Armonk · 12 mi away
0.33 MGD
Brewster · 13 mi away
0.13 MGD
Yorktown Hgts · 14 mi away
1.76 MGD
Brewster · 14 mi away
0.12 MGD
Brewster · 14 mi away
0.04 MGD
Mahopac · 15 mi away
0.04 MGD
Carmel · 16 mi away
0.15 MGD
Oakridge 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 October 26, 2026; facility record last updated September 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms