County · New Jersey
Middlesex County, New Jersey: drinking water records
This overview covers 36 ZIP codes and 16 community water systems in Middlesex County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Middlesex Water Company NJ1225001 | 233,376 | 300 | 4 | 1 | 0.8 ppb |
| New Brunswick W Dept NJ1214001 | 55,000 | 120 | 4 | 2 | 1.8 ppb |
| Perth Amboy Water Department NJ1216001 | 52,328 | 120 | 7 | 7 | 0 ppb |
| East Brunswick Water Utility NJ1204001 | 49,715 | 120 | 1 | 1 | 0.1 ppb |
| South Brunswick TWP W Di NJ1221004 | 45,450 | 275 | 6 | 1 | 0 ppb |
| Edison Water Co NJ1205001 | 35,000 | 240 | 4 | 3 | 1.2 ppb |
| South River W Dept NJ1223001 | 16,000 | 180 | 5 | 4 | 0 ppb |
| Matawan Borough Water de NJ1329001 | 9,084 | 180 | 4 | 1 | 0 ppb |
| Milltown W Dept NJ1212001 | 7,000 | 120 | 6 | 13 | 7.2 ppb |
| Old Bridge MUA NJ1209002 | 68,000 | 360 | 5 | 0 | 1.0 ppb |
| Sayreville W Dept NJ1219001 | 45,345 | 120 | 3 | 0 | 0.7 ppb |
| North Brunswick W Dept NJ1215001 | 43,905 | 120 | 0 | 0 | 2.4 ppb |
| Monroe TWP Utility Department NJ1213002 | 36,000 | 300 | 7 | 0 | 1.7 ppb |
| Highland Park W Dept NJ1207001 | 14,000 | 120 | 1 | 0 | 3.4 ppb |
| Spotswood W Dept NJ1224001 | 8,300 | 180 | 5 | 0 | 2.3 ppb |
| Helmetta Water Dept NJ1206001 | 2,000 | 0 | 0 | 0 | 0.9 ppb |
ZIP reports in Middlesex County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.