North Brunswick Water Hardness & Quality Report (2026)

North Brunswick, NJ, receives its water from New Jersey American Water (NJAW) Raritan System 2, serving Middlesex County and areas including North Brunswick, South Brunswick, and New Brunswick. Sources include seven intakes on the Raritan River, Millstone River, and Delaware & Raritan Canal, plus approximately 98 wells tapping the Brunswick, Passaic, Stockton, Glacial Drift, and Basalt Aquifers. Treatment occurs at facilities processing both surface water and groundwater through coagulation, filtration, disinfection, and fluoridation; sources are blended seasonally for consistent water quality across the service area.

The watershed encompasses the Raritan River Basin, draining through the diverse geology of the Piedmont Province, with Triassic-age sandstones, shales, and mudstones of the Brunswick Formation, alongside basaltic intrusions and glacial deposits of the Newark Basin. Aquifers like the Passaic and Stockton feature fractured bedrock that leaches minerals, while surface flows pick up ions from surrounding soils. This mixed geology imparts a moderately mineralised to hard character, with groundwater typically harder due to prolonged rock-water contact; reported total hardness ranges 90–222 mg/L as CaCO3.

Hard water in this supply leads to scale buildup in pipes, water heaters, dishwashers, and washing machines, causing white deposits, reduced flow, and higher energy use. Maintenance includes regular descaling, vinegar rinses for fixtures, and checking heater elements; a water softener is recommended to mitigate these effects and improve soap efficiency. Water quality shows pH 6.5–8.5, fluoride ND–0.8 mg/L, and sodium 31–36 mg/L, all compliant with standards; the system meets lead and copper rules via corrosion control, with disinfection and filtration treatment throughout.