COUNTY WATER-SYSTEM LEDGER
Middlesex, New Jersey
EPA’s September 2026 export lists 15 active community water systems serving Middlesex, New Jersey, with 6 current-violation flags and 3 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Middlesex, New Jersey
EPA associates 15 covered systems with Middlesex, New Jersey; their reported population-served values total 718,503 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Middlesex Water CompanyNJ1225001 | 233,376 | Surface water | No current violation flagged |
| Old Bridge MuaNJ1209002 | 68,000 | Surface water purchased | Current monitoring/reporting flag |
| New Brunswick W DeptNJ1214001 | 55,000 | Surface water | No current violation flagged |
| Perth Amboy Water DepartmentNJ1216001 | 52,328 | Groundwater under influence of surface water | Current serious-violator flag |
| East Brunswick Water UtilityNJ1204001 | 49,715 | Surface water purchased | No current violation flagged |
| South Brunswick Twp W DiNJ1221004 | 45,450 | Surface water purchased | No current violation flagged |
| Sayreville W DeptNJ1219001 | 45,345 | Groundwater under influence of surface water | No current violation flagged |
| North Brunswick W DeptNJ1215001 | 43,905 | Surface water | No current violation flagged |
| Monroe Twp Utility DepartmentNJ1213002 | 36,000 | Ground water | No current violation flagged |
| Edison Water CoNJ1205001 | 35,000 | Surface water purchased | Current serious-violator flag |
| South River W DeptNJ1223001 | 16,000 | Surface water purchased | Current monitoring/reporting flag |
| Highland Park W DeptNJ1207001 | 14,000 | Surface water purchased | No current violation flagged |
| Matawan Borough Water DeNJ1329001 | 9,084 | Surface water purchased | No current violation flagged |
| Spotswood W DeptNJ1224001 | 8,300 | Surface water purchased | Current monitoring/reporting flag |
| Milltown W DeptNJ1212001 | 7,000 | Surface water purchased | Current serious-violator flag |
02 / SOURCE MIX
Primary water sources for Middlesex, New Jersey
EPA classifies 15 systems serving Middlesex, New Jersey across 4 primary-source categories; Surface water is the largest category with 3 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.