South Orange Water Hardness & Quality Report (2026)

The South Orange Village System, operated through New Jersey American Water, serves South Orange in Essex County, New Jersey. Water is purchased from the Short Hills system and sourced primarily from one groundwater well — Well 17 — located within South Orange Village, averaging 2.2 million gallons supplied daily. No surface water reservoirs or rivers are directly used; treatment involves disinfection and pH adjustment at facilities managed by New Jersey American Water, with the system complying with all EPA standards per the Consumer Confidence Report.

The supply draws from the Passaic River watershed indirectly via groundwater recharge, with key geology including the Brunswick aquifer (Triassic red beds of sandstone and shale), glacial sand and gravel aquifers, and Precambrian igneous and metamorphic rocks. Fractured igneous rocks including basalt add trace minerals, while glacial sands filter percolating water without removing hardness ions. These formations dissolve calcium and magnesium during infiltration, yielding a characteristically hard supply at 160 mg/L with naturally elevated mineral content.

Hard water at 160 mg/L causes scale buildup in pipes, boilers, faucets, showerheads, and dishwashers; hot water heaters and washing machines are most affected, increasing energy costs. Regular cleaning of aerators and water heaters is recommended; vinegar soaks dissolve scale effectively. A water softener is recommended for households to prevent spotting on dishes, improve soap lathering, and extend appliance life. Water pH is 7.1–8.5; lead is 1 µg/L (90th percentile, below the 15 µg/L action level), copper 0.306 mg/L, and nitrate 1.4 mg/L — all within safe limits.