Warren Twp Sewer Auth Stage 5 STP
Warren, NJ · Somerset County · Publicly Owned Treatment Works
- Average flow
- 0.09 MGD
- Design flow
- 0.38 MGD
- NPDES permit
- NJ0050369
- Expired
- Permit expires
- June 2025
- Population served
- 1,383
- CWNS 2022
Warren Twp Sewer Auth Stage 5 STP is a publicly owned wastewater treatment works in Warren, Somerset County, New Jersey treating an average of 0.09 million gallons per day against a permitted design capacity of 0.38 MGD, serving about 1,383 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit NJ0050369 (expired), which expires in June 2025, with 8 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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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 8
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Warren Twp Sewer Auth Stage 5 STP.
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Nearby wastewater treatment plants in New Jersey
Liberty Corner · 1 mi away
1.29 MGD
Warren · 2 mi away
0.39 MGD
Stirling · 4 mi away
0.9 MGD
Bernardsville · 5 mi away
0.44 MGD
Warren · 5 mi away
0.24 MGD
Bridgewater · 6 mi away
12.98 MGD
Berkeley Heights · 7 mi away
1.15 MGD
Chatham · 9 mi away
0.71 MGD
Warren Twp Sewer Auth Stage 5 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 26, 2025.