Mount Holly Water Hardness & Quality Report (2026)

NJ American Water supplies drinking water to Mount Holly Township and nearby areas in Burlington County, New Jersey, serving about 48,050 people. The utility purchases surface water, which is then treated at facilities operated by New Jersey American Water. This system is part of the larger New Jersey American Water network, with customer service located in Trenton, NJ. The water originates from surface sources within the Delaware River watershed, drawing from regions that include the New Jersey Piedmont and Coastal Plain. The underlying geology consists of Cretaceous and Tertiary sedimentary layers, such as sands and clays, which contribute naturally occurring calcium and magnesium. These minerals give the water a distinct character and elevate its hardness, a common trait for river-influenced supplies in the mid-Atlantic Coastal Plain.

At this moderate hardness level, you'll likely notice scale buildup affecting appliances like water heaters, dishwashers, and coffee makers, which can decrease their efficiency and lifespan. Your laundry might feel stiffer, and you may find yourself using more soap or detergent to achieve the same cleaning results. To manage this, regular maintenance, such as deliming fixtures, is recommended. For a more significant impact, installing a water softener is often advised to prevent spotting on glassware and help prolong the life of your pipes. The 2025 Consumer Confidence Report indicates compliance with all state and federal drinking water standards, including lead tap sampling. However, one contaminant is noted to exceed EPA health-based guidelines, though it remains within legal limits. Concerns regarding PFAS are also mentioned, with filter recommendations provided for vulnerable populations. Potential pollutants like 1,3-Butadiene, Antimony, Chlordane, and Dinoseb have been flagged in assessments. The treatment process includes standard steps for surface water: coagulation, sedimentation, filtration, and disinfection.