Woodbridge Water Hardness & Quality Report (2026)

Middlesex Water Company serves Woodbridge Township in Middlesex County, New Jersey, providing water to approximately 233,376 people across multiple municipalities including Woodbridge, Edison, and Perth Amboy. The utility produces 14.4 billion gallons annually from mixed sources: surface water from the Raritan River and groundwater from the Potomac-Raritan-Magothy aquifer. Key facilities include the Park Avenue Treatment Plant and several wellfields; treatment involves filtration, disinfection with chlorine, corrosion control, coagulation, sedimentation, and fluoride addition. Annual Consumer Confidence Reports are available at middlesexwater.com with the latest contaminant data.

The supply originates in the Raritan River watershed, spanning the Piedmont and Coastal Plain physiographic provinces of central New Jersey. Groundwater is extracted from the Potomac-Raritan-Magothy aquifer — composed of sandy Cretaceous-Tertiary sediments derived from eroded Appalachian highlands — where associated limestone and dolomitic rocks dissolve calcium and magnesium, yielding a hard supply. Surface water from the Raritan River picks up ions from Triassic sedimentary rocks and glacial deposits upstream, contributing to a moderately mineralised, seasonally variable character.

Hard water leads to scale buildup in pipes, water heaters, dishwashers, and washing machines — hot water appliances suffer most due to mineral precipitation at higher temperatures. Maintenance includes regular vinegar descaling, installing drain screens, and flushing heaters annually. A water softener is recommended for households to prevent spotting on fixtures and improve soap efficiency. Eight contaminants exceed health guidelines including potential PFAS and disinfection byproducts per analyses; pH is neutral to slightly alkaline; the utility complies with lead and copper rules via corrosion inhibitors.