Woodside Water Hardness & Quality Report (2026)

Woodside, New York, a neighborhood in the Queens borough of New York City — a vibrant, hyper-diverse Queens neighborhood known as one of the most ethnically diverse places in the world, home to large Irish-American, Filipino-American, Colombian-American, Thai, Tibetan, and Nepali communities, adjacent to Jackson Heights and Sunnyside, served by the No. 7 subway 'International Express' train, and one of the iconic New York immigrant community neighborhoods — draws its municipal water supply from the Delaware and Catskill Aqueduct systems via the NYC DEP. Water hardness in Woodside measures 89 mg/L — classified as moderately soft.

Woodside's moderate softness — harder than the very soft Catskill–Delaware source water — reflects the NYC Queens distribution infrastructure's mineral accumulation. The NYC Delaware and Catskill systems source water is very soft (the Catskill Mountains Devonian calcareous-poor Catskill Formation and Hamilton Group sandstone and shale watershed — typically 20–50 mg/L source water). Woodside's Queens urban distribution infrastructure includes mains from the 1920s–1950s Queens suburban buildout era, accumulating moderate mineral content from the soft source supply, producing the moderate 89 mg/L.

With hardness at 89 mg/L, Woodside residents enjoy moderately soft water. NYC DEP consistently delivers water meeting all New York State DOH and EPA Safe Drinking Water Act requirements.