Sparta Water Hardness & Quality Report (2026)

Sparta Twp Water Utility - Lake Mohawk (PWSID NJ1918004) serves Sparta Township in Sussex County, New Jersey, including areas like Lake Mohawk, Mohawk Hills, and the village center, providing water to over 17,986 residents. The utility office is located at 65 Main St., Sparta, NJ 07871 (phone 973-729-7133). Water originates entirely from 31 active groundwater wells tapping Precambrian rock aquifers in the New Jersey Highlands physiographic province. No surface reservoirs or rivers are used, and treatment involves standard chlorine disinfection processes at wellhead facilities.

The supply relies on the fractured bedrock aquifer within the New Jersey Highlands physiographic province, specifically Precambrian crystalline formations of granites and gneisses over 500 million years old. These ancient rocks shape water chemistry by leaching minerals during groundwater flow through fractures, yielding a hard supply prone to elevated total dissolved solids. No named watershed applies, as the system is purely groundwater-fed, avoiding organic matter from surface sources while incorporating geological minerals that define its moderately mineralised profile.

Moderately hard water causes scale buildup in water heaters, dishwashers, and washing machines, along with reduced soap lathering and spotty dishes. Plumbing fixtures may show limescale over time; maintenance includes regular vinegar descaling of faucets and coffee makers and using high-efficiency detergents formulated for hard water. A water softener is recommended to extend appliance life. The utility reports compliance with state drinking water standards; notable detections include 1,4-Dioxane, hexavalent Chromium, disinfection byproducts, and high TDS around 698 — consult the 2023 CCR for full details.