North School St, Gibbstown, NJ 08027 · Gloucester County · Publicly Owned Treatment Works
Greenwich Twp STP is a publicly owned wastewater treatment works in Gibbstown, Gloucester County, New Jersey treating an average of 0.52 million gallons per day against a permitted design capacity of 1 MGD, serving about 4,813 residents. It discharges under NPDES permit NJ0030333 (expired), which expires in December 2025, with 83 recorded violations in the last three years. EPA has recorded 3 formal enforcement actions naming the plant, the latest in October 2023.
One treatment structure or unit process identified at Greenwich Twp STP.
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See the full treatment train at Greenwich Twp STP: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Greenwich Twp STP in EPA's ICIS system.
Latest case · Oct 2023
Greenwich Sanitary Treatment Plant
Administrative order · CWA, NPDES Discharge without a Permit · Final Order No Penalty · Compliance actions $40,000
EPA's description of the case:
“Effluent Violations and O&M.”
Source: EPA ECHO, civil enforcement case 02-2024-3010.
Full case history with a free Klarifi account
Every action against Greenwich Twp STP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Decision-makers at Greenwich Twp STP.
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West Deptford Twp · 3 mi away
15.52 MGD
Swedesboro · 6 mi away
0.21 MGD
Bridgeport · 6 mi away
1.58 MGD
Mullica Hill · 7 mi away
0.31 MGD
Camden · 11 mi away
46.41 MGD
Penns Grove · 12 mi away
0.28 MGD
Woodstown · 13 mi away
0.37 MGD
Maple Shade · 18 mi away
2.11 MGD
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 November 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms