Middlesex County Utilities Authority
2571 Main Street Extension, Sayreville, NJ 08872 · Middlesex County · Publicly Owned Treatment Works
- Average flow
- 87.51 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 87.51 million gallons per day against a permitted design capacity of 147 MGD, serving about 924,565 residents. It discharges under NPDES permit NJ0020141 (administratively continued), which expires in June 2020, with 21 recorded violations in the last three years. EPA has recorded 7 formal enforcement actions naming the plant, the latest in July 2017.
Treatment technology
3 treatment structures and unit processes identified at Middlesex County Utilities Authority.
Available with a free Klarifi account
See the full treatment train at Middlesex County Utilities Authority: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 21
- Effluent violations
- 17
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 Middlesex County Utilities Authority in EPA's ICIS system.
- Formal actions
- 7
- 0 since FY2020
- Penalties assessed
- $122,370
- all cases
- Compliance actions
- $2,600
- required by EPA orders
- EPA inspections
- 2
- latest Aug 2016
Latest case · Jul 2017
Middlesex County Utilities Authority
Administrative order · TSCA, PCBS · Final Order With Penalty · Penalty $22,500 · Compliance actions $2,500
EPA's description of the case:
“Respondent had two PCB Transformers in use at different locations which had each leaked onto the concrete pad below. Penalty is $22,500.”
Source: EPA ECHO, civil enforcement case 02-2017-9103.
Full case history with a free Klarifi account
Every action against Middlesex County Utilities Authority with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
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
Elizabeth · 12 mi away
50.33 MGD
Manalapan · 12 mi away
5.82 MGD
Holmdel · 13 mi away
0.0028 MGD
Belford · 13 mi away
13.96 MGD
Middletown · 13 mi away
7.43 MGD
Bridgewater · 14 mi away
16.4 MGD
Warren · 15 mi away
0.31 MGD
Stirling · 15 mi away
1.05 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 October 26, 2026; facility record last updated July 1, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms