Greenwich Twp STP
Gibbstown, NJ · Gloucester County · Publicly Owned Treatment Works
- Average flow
- 0.4 MGD
- Design flow
- 1 MGD
- NPDES permit
- NJ0030333
- Expired
- Permit expires
- December 2025
- Population served
- 4,813
- CWNS 2022
Greenwich Twp STP is a publicly owned wastewater treatment works in Gibbstown, Gloucester County, New Jersey treating an average of 0.4 million gallons per day against a permitted design capacity of 1 MGD, serving about 4,813 residents. Treatment on site includes clarifiers. It discharges under NPDES permit NJ0030333 (expired), which expires in December 2025, with 81 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 81
- Effluent violations
- 21
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Greenwich Twp STP.
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Nearby wastewater treatment plants in New Jersey
West Deptford Twp · 3 mi away
15.16 MGD
Swedesboro · 6 mi away
0.23 MGD
Bridgeport · 6 mi away
1.46 MGD
Mullica Hill · 7 mi away
0.3 MGD
Camden · 11 mi away
43.19 MGD
Penns Grove · 12 mi away
0.25 MGD
Woodstown · 13 mi away
0.34 MGD
Maple Shade · 18 mi away
1.71 MGD
Greenwich Twp 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 6, 2025.