Little Falls Water Hardness & Quality Report (2026)

The Little Falls service area, supplied by NJ American Water, provides water to approximately 11,247 residents across Little Falls, Cedar Grove, North Caldwell, and Woodland Park. This is a purchased water system, drawing from the Passaic River and Wanaque Reservoir. These crucial surface water sources are managed by the Passaic Valley Water Commission and the North Jersey District Water Supply Commission, among others. The system averages 1.0 million gallons daily and utilizes hypochlorite for disinfection, ensuring compliance with federal drinking water standards.

The water's journey begins in the Passaic River watershed, which encompasses the New Jersey Piedmont and Highlands. Here, the underlying bedrock is a mix of ancient Precambrian metamorphic rocks like gneiss and schist, alongside Paleozoic sedimentary formations. Pleistocene glacial deposits further blanket these areas. As water flows through the Wanaque Reservoir's feeder streams and across the Passaic River, it naturally picks up moderate amounts of dissolved minerals, primarily calcium and magnesium, from the weathered rock and soil.

Users in Little Falls might notice some scale buildup on appliances like kettles and shower heads due to the water's moderate hardness. You'll also find that soap and detergents work a bit less effectively, and glassware may show light spotting after washing. While a whole-house water softener isn't usually necessary, it could be a good idea if you have particularly sensitive appliances or want to reduce spotting. Regularly descaling coffee makers and cleaning faucet aerators will help manage any scale accumulation. NJ American Water reports that in 2026, two contaminants were found above EPA health guidelines in at least one served city, and customers can find detailed information in the utility's annual Consumer Confidence Report.