Randolph Water Hardness & Quality Report (2026)

Randolph Township Public Works Department, in partnership with the Morris County Municipal Utilities Authority (MCMUA), supplies drinking water to Randolph Township in Morris County, New Jersey, serving residential, commercial, and municipal users across approximately 33 square miles. Water is sourced exclusively from the Alamatong well fields, comprising six wells in Randolph and Chester townships plus two in Flanders Valley within Mount Olive and Roxbury townships. No surface water reservoirs or rivers are used; treatment occurs at MCMUA facilities with additional monitoring by township staff to ensure compliance.

The Alamatong well fields lie within the Passaic River watershed, drawing exclusively from groundwater unaffected by direct surface runoff. Geologically, the area overlies the Newark Basin, with water extracted from Triassic Brunswick Formation sandstones and Pleistocene glacial deposits. These rock layers — containing calcium and magnesium-bearing minerals including limestone and dolomite fragments — release dissolved ions through prolonged rock-water interaction in confined aquifer conditions, yielding a moderately mineralised supply characteristic of northern New Jersey's sedimentary geology.

Moderately hard water in Randolph causes moderate scale buildup in appliances like water heaters, dishwashers, and coffee makers, reducing efficiency over time. Faucet aerators and showerheads may clog, leading to lower flow rates. Regular maintenance includes descaling with vinegar solutions, installing scale-inhibiting filters, and flushing hot water systems annually. A water softener is recommended for households noticing soap scum, dry skin, or spotting on glassware. The 2025 Consumer Confidence Report confirms the water meets all EPA Maximum Contaminant Level Goals; no PFAS or notable issues reported; source protection plans at 214 Center Grove Road address potential risks from the well fields.