Van Nest Water Hardness & Quality Report (2026)

Van Nest, New York, in the Bronx in the northeastern Bronx borough — a diverse residential neighborhood near the Pelham Parkway corridor — receives its municipal water from the New York City Department of Environmental Protection (NYC DEP), which supplies the entire city from the world-renowned Catskill-Delaware Watershed system. The Catskill system draws from Schoharie, Ashokan, Rondout, and Neversink reservoirs in the Catskill uplands, while the Delaware system provides water from Cannonsville, Pepacton, Downsville, and smaller Delaware County impoundments.

The soft 75.5 mg/L hardness and low TDS of 122.6 mg/L are characteristic of NYC's Catskill-Delaware supply — one of the most celebrated water systems in the world. The reservoir watersheds drain the Catskill Mountains and Allegheny Plateau — ancient landscapes of Devonian and Silurian shale, siltstone, and sandstone (the Catskill Delta clastic sequence) deposited as river deltas into a Devonian inland sea — pure siliciclastic rocks with essentially no carbonate content. NYC DEP has protected these pristine Catskill upland watersheds through the largest private land acquisition program in US water utility history, preserving the soft water quality for over 9 million New Yorkers.

At 75.5 mg/L, Van Nest residents enjoy the soft, clean Catskill water that defines New York City's water quality reputation. Soap lathers well, appliances scale slowly, and tap water is generally pleasant to drink directly. Semi-annual descaling of kettles and coffee machines is adequate. The low PFAS level of 3.7 ppt reflects NYC DEP's rigorous watershed stewardship — Van Nest's Bronx neighborhood water, fed from the same pristine upstate reservoir system as all NYC neighborhoods, benefits from world-class source water protection.