Carteret Water Hardness & Quality Report (2026)

Carteret, New Jersey, is served by Middlesex Water Company, a private utility providing water to multiple communities in Middlesex County and surrounding areas. The system draws from a combination of surface-water sources in the Raritan River watershed and regional groundwater wells tapping coastal-plain aquifers beneath the service area. Treated water is delivered through a network of distribution mains serving residential, commercial, and industrial customers in Carteret and adjacent municipalities. The utility employs conventional treatment processes including coagulation, filtration, and disinfection to ensure microbiological safety and regulatory compliance.

The primary watershed is the Raritan River basin, which drains a mix of glacial deposits, sand, gravel, and underlying sedimentary formations. Groundwater comes from unconsolidated aquifers such as the Kirkwood–Cohansey system, composed of Quaternary and Tertiary sands and gravels overlying older marine sediments. As water moves through these deposits, it interacts with carbonate-bearing minerals and clays, picking up calcium and magnesium and producing a generally hard supply with noticeable mineral content.

At hard water levels, Carteret residents can expect visible scale buildup on showerheads, faucets, and inside water heaters, dishwashers, and washing machines over time. Appliances that heat water are most affected, as heat accelerates scale formation and reduces efficiency. Regular descaling of kettles and showerheads, plus periodic inspection of water heaters, helps maintain performance. A water softener is recommended for households experiencing frequent scale, spotty dishes, or stiff laundry. Water-quality dashboards indicate contaminants above health-based guidelines, though the system reports no current violations of EPA enforceable Maximum Contaminant Levels (MCLs); lead and copper are within regulatory limits, and PFAS and other emerging contaminants are under active monitoring.