167 Oak Lane, Hightstown, NJ 08520 · Mercer County · Publicly Owned Treatment Works
Hightstown Boro AWWTP is a publicly owned wastewater treatment works in Hightstown, Mercer County, New Jersey treating an average of 0.28 million gallons per day, serving about 5,276 residents. It discharges under NPDES permit NJ0029475 (effective), which expires in September 2027, with 39 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in June 2023.
2 treatment structures and unit processes identified at Hightstown Boro AWWTP.
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See the full treatment train at Hightstown Boro AWWTP: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Hightstown Boro AWWTP in EPA's ICIS system.
Latest case · Jun 2023
Borough of Hightstown
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $5,000
EPA's description of the case:
“This Order has been developed to enforce NJPDES permit requirements regarding proper O&M of the sanitary sewer collection system.”
Source: EPA ECHO, civil enforcement case 02-2023-3003.
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Every action against Hightstown Boro AWWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Decision-makers at Hightstown Boro AWWTP.
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East Windsor · 2 mi away
2.53 MGD
Millstone Township · 5 mi away
0.11 MGD
Allentown · 8 mi away
0.14 MGD
Manalapan · 10 mi away
5.82 MGD
Montgomery · 10 mi away
0.43 MGD
Lawrenceville · 10 mi away
7.31 MGD
Chesterfield · 11 mi away
0.65 MGD
Skillman · 12 mi away
0.16 MGD
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 April 24, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms