Bushwick Water Hardness & Quality Report (2026)

Bushwick, a neighborhood in the central section of Brooklyn (Kings County), New York City, receives its municipal water supply from the New York City Department of Environmental Protection (NYC DEP), drawing from the same Catskill–Delaware watershed system as all five New York City boroughs — nine reservoirs in the Catskill Mountains and Delaware River headwaters in upstate New York, gravity-fed to the Hillview Reservoir and distributed through the borough networks. Water hardness in Bushwick measures 177.5 mg/L — classified as hard, among the higher readings in the New York City distribution system.

Bushwick's high hardness — far above the naturally soft Catskill source water (20–40 mg/L) — reflects the central Brooklyn distribution network's extensive mineral accumulation characteristics. Central Brooklyn's water distribution infrastructure was built primarily in the mid-19th to early 20th centuries using cast-iron mains that develop significant calcium carbonate tuberculation (scale deposits on pipe interiors) over decades of use. Water traveling through these old central Brooklyn mains picks up substantially more mineral content than in outer borough areas with newer pipes. Bushwick, as a historically dense central Brooklyn neighborhood, is served by some of the oldest and most tuberculated sections of the Brooklyn distribution network, resulting in one of the higher tap hardness readings in the city.

At 177.5 mg/L, Bushwick residents encounter regular hard water challenges. Scale deposits form on faucet aerators, showerheads, and tile within weeks — monthly cleaning with citric acid solution is standard maintenance. Dishwashers produce better glassware results with rinse-aid. NYC DEP consistently delivers water meeting all NYSDOH and EPA Safe Drinking Water Act requirements throughout the Brooklyn distribution network.