Cinnaminson Water Hardness & Quality Report (2026)

New Jersey American Water - Western provides community water to Cinnaminson Township, Burlington County, New Jersey, along with other areas like Beverly, Cinnaminson, Delanco, Delran, Mount Holly, Palmyra, and Riverside. Their supply is a mix, drawing from the Delaware River via a surface water intake and from 42 active wells. These wells tap into the Potomac-Raritan-Magothy aquifer system (across its upper, middle, and lower sections), the Mount Laurel-Wenonah aquifer, and the Englishtown aquifer system. Treated at various facilities, the river water undergoes conventional processes, while groundwater is disinfected.

The groundwater originates in Cretaceous-age coastal plain formations composed of sand, gravel, silt, and clay. Specifically, the Potomac-Raritan-Magothy aquifers are confined by clays, the Mount Laurel-Wenonah formations consist of sandy limestones, and the Englishtown aquifer is made up of cross-bedded sands. These underground layers contain limestone and dolomite equivalents. As the water interacts with these minerals over time, it dissolves calcium and magnesium ions, leading to a moderately hard water supply characteristic of the New Jersey coastal plain.

At 75 mg/L, the water's hardness can lead to noticeable scale buildup in appliances like kettles, dishwashers, and water heaters, potentially increasing their energy consumption by 15-20%. You might also find that soaps and detergents aren't as effective, and laundry could appear faded. To manage scale, try cleaning fixtures monthly with vinegar or using scale inhibitors. If spotting on dishes or other issues persist, installing a water softener is recommended for better appliance performance and longevity. The utility reports an average pH of 7.50, and while naturally occurring fluoride is low, other regulated contaminants like nitrates are below maximum levels.