Middlesex County, NJ Water Quality Guide
Middlesex County is served by a mix of a large investor-owned utility, a locally headquartered water company, and municipal systems.
About Middlesex County, NJ Water
About Middlesex County, NJ Water
Middlesex County is served by multiple public water systems, utilities, and report records. The provider and contaminant information below is organized by PWS ID rather than treated as one countywide water result.
Municipality-level mapping: Pending verified NJDEP or utility service-area records for the current inventory.
Utility and water-quality data
Water system providers for Middlesex County, NJ
This county page lists PWS systems represented in the current NJ source inventory. A county is not one water system; confirm the PWS ID on your bill or through NJDEP.
Utility providers and PWS IDs
| PWS ID | System | Provider | County | Status | Official links |
|---|
Municipality pages with available report data
- Carteret — 1 report-linked PWS system
- Cranbury — 1 report-linked PWS system
- Dunellen — 1 report-linked PWS system
- Edison — 1 report-linked PWS system
- Highland Park — 1 report-linked PWS system
- Jamesburg — 1 report-linked PWS system
- Middlesex — 1 report-linked PWS system
- Monroe — 1 report-linked PWS system
- New Brunswick — 1 report-linked PWS system
- Piscataway — 1 report-linked PWS system
- Plainsboro — 1 report-linked PWS system
- South Brunswick — 1 report-linked PWS system
- South Plainfield — 1 report-linked PWS system
- Woodbridge — 1 report-linked PWS system
Reported contaminant levels for Middlesex County, NJ
| PWS ID | System | Contaminant | Reported level | Range | Limit | Comparison | Sample year | Source |
|---|
All available reports
How to read this info
How to Read This Info for Middlesex County, NJ
Start with the provider table and PWS ID. Compare the reported contaminant level and unit with the listed MCL, recommended upper limit, or action level. “Below / At / Above” is a direct comparison, not a formal compliance determination.
For address confirmation, use the NJDEP Drinking Water Viewer, EPA ECHO, and the official CCR links shown above.
FAQ
Frequently asked questions
Who is my water provider and source in Middlesex County?
Review the listed PWS IDs and providers above:
No county-associated PWS records are currently in the source inventory.
Confirm the PWS ID on your bill or with NJDEP because counties are not single water systems.
Does Middlesex County have specific water quality issues?
Review the contaminant rows and official CCR sources above. Do not treat one system’s report as a countywide result.
NJ Water Quality is an independent educational resource. County and PWS mappings are discovery records and may not establish service at every address. Blank, dated, or limited data are disclosed above.
Last reviewed: July 13, 2026