Elmwood WTP
North Elmwood Road & Route 70, Marlton, NJ 08053 · Burlington County · Publicly Owned Treatment Works
- Average flow
- 1.83 MGD
- Design flow
- 1.5 MGD
- NPDES permit
- NJ0024040
- Effective
- Permit expires
- June 2031
- Population served
- 24,329
- CWNS 2022
Elmwood WTP is a publicly owned wastewater treatment plant in Marlton, Burlington County, New Jersey treating an average of 1.83 million gallons per day against a permitted design capacity of 1.5 MGD, serving about 24,329 residents. It discharges under NPDES permit NJ0024040 (effective), which expires in June 2031, with 20 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in September 2004.
Treatment technology
2 treatment structures and unit processes identified at Elmwood WTP.
Available with a free Klarifi account
See the full treatment train at Elmwood WTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 20
- Effluent violations
- 8
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 Elmwood WTP in EPA's ICIS system.
- Formal actions
- 2
- 0 since FY2020
- Compliance actions
- $2,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Sep 2004
Evesham MUA
Administrative order · CWA, Information Request, Records, Entry · Withdrawn by Region/State
Source: EPA ECHO, civil enforcement case 02-2003-3339.
Full case history with a free Klarifi account
Every action against Elmwood WTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Elmwood WTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in New Jersey
Medford Lakes · 4 mi away
0.26 MGD
Maple Shade · 8 mi away
2.11 MGD
Willingboro · 10 mi away
3.17 MGD
Palmyra · 11 mi away
0.39 MGD
Riverton · 11 mi away
0.12 MGD
Pemberton · 11 mi away
1.5 MGD
Cinnaminson · 11 mi away
1.31 MGD
Delran · 11 mi away
1.9 MGD
Elmwood WTP: 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 21, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms