Middlesex County Utilities Authority
Sayreville, NJ · Middlesex County · Publicly Owned Treatment Works
- Average flow
- 77.42 MGD
- Design flow
- 147 MGD
- NPDES permit
- NJ0020141
- Administratively continued
- Permit expires
- June 2020
- Population served
- 924,565
- CWNS 2022
Middlesex County Utilities Authority is a publicly owned wastewater treatment plant in Sayreville, Middlesex County, New Jersey treating an average of 77.42 million gallons per day against a permitted design capacity of 147 MGD, serving about 924,565 residents. Treatment on site includes clarifiers, uncovered lagoons, biogas silos. It discharges under NPDES permit NJ0020141 (administratively continued), which expires in June 2020, with 17 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 17
- Effluent violations
- 17
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Middlesex County Utilities Authority, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Middlesex County Utilities Authority, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New Jersey
Rahway · 8 mi away
19.3 MGD
Elizabeth · 12 mi away
44.93 MGD
Manalapan · 12 mi away
5.83 MGD
Holmdel · 13 mi away
0.003 MGD
Belford · 13 mi away
12.8 MGD
Middletown · 13 mi away
7.01 MGD
Bridgewater · 14 mi away
12.98 MGD
Warren · 15 mi away
0.24 MGD
Middlesex County Utilities Authority: 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 July 1, 2025.