Harrison Water Hardness & Quality Report (2026)

The Harrison Water Department in Essex County, New Jersey, supplies its residents primarily through the Passaic Valley Water Commission (PVWC). The PVWC draws water from the Passaic River watershed and supplementary groundwater sources, treating it at its facilities before the Harrison Water Department manages local distribution. This municipal system, identified by PWS ID #1605002, operates from its main office at 600 Essex Street, Harrison, NJ 07029, and can be contacted at 973-268-2296.

The water originates from the Passaic River watershed, which winds through the Newark Basin. This geological area is characterized by Triassic-age sedimentary rocks, including sandstones, shales, and conglomerates, all resting atop Precambrian metamorphic basement rocks. Interspersed within these formations are deposits of limestone and dolomite. These mineral-rich layers readily dissolve, releasing calcium and magnesium ions into the water, which is why the region experiences the characteristic hardness typical of northern New Jersey.

With water hardness at the level typical for Harrison, homeowners will likely notice scale buildup on appliances like kettles and shower heads. You might also find that soap and detergents aren't as effective, and fixtures could develop stains. Appliances such as water heaters and boilers are particularly susceptible to mineral deposits, which can decrease their efficiency and shorten their lifespan. To combat these issues, installing a water softener is often recommended. The Harrison Water Department confirms that its drinking water meets all federal and state safety regulations, as detailed in their 2022 Consumer Confidence Report.