Mercer County Correction Ctr WTP
Hopewell Twp, NJ · Mercer County · Publicly Owned Treatment Works
- Average flow
- 0.06 MGD
- Design flow
- 0.09 MGD
- NPDES permit
- NJ0027715
- Expired
- Permit expires
- September 2024
- Population served
- —
- CWNS 2022
Mercer County Correction Ctr WTP is a publicly owned wastewater treatment plant in Hopewell Twp, Mercer County, New Jersey treating an average of 0.06 million gallons per day against a permitted design capacity of 0.09 MGD. Treatment on site includes uncovered lagoons. It discharges under NPDES permit NJ0027715 (expired), which expires in September 2024, with 31 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 31
- Effluent violations
- 27
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Mercer County Correction Ctr WTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Mercer County Correction Ctr WTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New Jersey
Lambertville · 3 mi away
0.6 MGD
Sergeantsville · 8 mi away
0.02 MGD
Hopewell · 10 mi away
0.14 MGD
Lawrenceville · 11 mi away
5.5 MGD
Skillman · 12 mi away
0.13 MGD
Trenton · 12 mi away
9.42 MGD
Skillman · 13 mi away
0.1 MGD
Frenchtown · 16 mi away
0.08 MGD
Mercer County Correction Ctr 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 September 11, 2026; facility record last updated April 5, 2025.