Lambertville City Sewer Auth
Lambertville, NJ · Hunterdon County · Publicly Owned Treatment Works
- Average flow
- 0.6 MGD
- Design flow
- 1.5 MGD
- NPDES permit
- NJ0020915
- Effective
- Permit expires
- March 2030
- Population served
- 6,502
- CWNS 2022
Lambertville City Sewer Auth is a publicly owned wastewater treatment works in Lambertville, Hunterdon County, New Jersey treating an average of 0.6 million gallons per day against a permitted design capacity of 1.5 MGD, serving about 6,502 residents. Treatment on site includes biogas balloons. It discharges under NPDES permit NJ0020915 (effective), which expires in March 2030, with 441 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas balloons
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Compliance snapshot (last 3 years)
- Total violations
- 441
- Effluent violations
- 37
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Lambertville City Sewer Auth.
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Nearby wastewater treatment plants in New Jersey
Hopewell Twp · 3 mi away
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Sergeantsville · 6 mi away
0.02 MGD
Hopewell · 11 mi away
0.14 MGD
Skillman · 13 mi away
0.13 MGD
Frenchtown · 13 mi away
0.08 MGD
Skillman · 14 mi away
0.1 MGD
Lawrenceville · 14 mi away
5.5 MGD
Pittstown · 15 mi away
0.0019 MGD
Lambertville City Sewer Auth: 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 14, 2025.