Lyndhurst Water Hardness & Quality Report (2026)

Lyndhurst, New Jersey, in Bergen County — a Bergen County township adjacent to Rutherford and North Arlington, part of the densely populated Passaic-Hackensack river corridor of northeastern New Jersey — receives its municipal water from the Bergen County Utilities Authority or New Jersey American Water, which draws from the Wanaque Reservoir (on Wanaque Creek, a Ringwood River tributary in the Highlands) through the northeastern NJ water supply distribution system.

The very soft 39 mg/L hardness and very low TDS of 59.8 mg/L stand in sharp contrast to the adjacent Elmwood Park (160 mg/L) and Palisades Park Bergen County communities — reflecting that Lyndhurst draws primarily from the Wanaque Reservoir (very soft Highlands supply) rather than the harder Passaic River supply. The Wanaque Reservoir drains the Wyanokie Highlands of the New Jersey Highlands province — terrain dominated by Precambrian gneiss, quartzite, and Proterozoic granite of the Reading Prong. These ancient crystalline rocks produce very soft, very low-mineral water, and the Wanaque supply is among the softest in the northeastern NJ corridor.

At 39 mg/L, Lyndhurst's water is very soft — excellent for household use. Scale forms very slowly, soap lathers richly, and appliances maintain excellent efficiency. Annual descaling is more than sufficient. The PFAS level of 5.1 ppt warrants a certified drinking water filter — the Bergen County industrial legacy (the Meadowlands complex — a major industrial PFAS zone), Teterboro Airport (AFFF user), and the northeastern NJ PFAS industrial corridor contribute to Lyndhurst's PFAS readings despite the naturally clean soft supply.