Sayreville Junction Water Hardness & Quality Report (2026)

The Borough of Sayreville Water Department serves Sayreville Junction and surrounding areas in Middlesex County, New Jersey, as part of the greater Sayreville public water system. Primary sources include surface water from the Raritan River and treated supplies from Middlesex Water Company, supplemented by groundwater wells tapping the Kirkwood-Cohansey aquifer. Treatment occurs at the Sayreville Water Treatment Plant and interconnected facilities operated by Middlesex Water Company, distributing to approximately 45,000 residents across the borough via coagulation, sedimentation, filtration, chlorination, and fluoride addition.

The supply originates in the Raritan River watershed, spanning the Piedmont and Coastal Plain physiographic provinces. Key geological features include Cretaceous sands and clays of the Raritan Formation, overlaid by Quaternary glacial sands and gravels. The Kirkwood-Cohansey aquifer, a major unconfined sandy aquifer, underlies the area and interacts with surface waters. Carbonate traces in sediments dissolve calcium and magnesium into the supply, resulting in a moderately mineralised to hard character typical of mixed river-aquifer systems in central New Jersey.

Hard water leads to scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan with visible white deposits, reduced flow, and higher energy use. Regular vinegar flushing of fixtures, installing scale inhibitors, and annual descaling of heaters are recommended. A water softener is advised to mitigate these effects and improve soap efficiency. The 2024 Consumer Confidence Report confirms compliance with federal standards; PFAS levels are below NJDEP limits following granular activated carbon treatment, and disinfection byproducts including TTHMs and haloacetic acids remain within MCLs.