Hicksville Water Hardness & Quality Report (2026)

Hicksville, New York, in Nassau County on central Long Island — the quintessential Long Island postwar suburb (Hicksville was among the first Long Island communities to be dramatically transformed by Levittown-era suburban development in the late 1940s–1950s), home of a large Indian-American and Taiwanese-American community (a major South Asian and East Asian suburban diaspora center in New York), and a major Nassau County commercial and transportation hub (LIRR Hicksville Station — one of the busiest LIRR stations on Long Island) — draws its municipal water supply from the Long Island aquifer system via the Nassau County Department of Public Works. Water hardness in Hicksville measures 151.5 mg/L — classified as hard.

Hicksville's hard supply reflects the central Nassau County Long Island aquifer characteristics. The Magothy Aquifer at Hicksville–Nassau County is hosted in the Cretaceous Magothy Formation (moderately calcareous marine sandy formation — the main Long Island aquifer). The Pleistocene glacial outwash overlying the Magothy at Hicksville (from the Ronkonkoma Moraine — quartz–feldspar glacial outwash) is predominantly calcareous-poor, but the Magothy Formation at central Nassau County depth has calcareous cemented layers contributing to the moderate-to-hard 151.5 mg/L at Hicksville.

At 151.5 mg/L, Hicksville residents face regular hard water challenges. Monthly descaling with citric acid solution is standard maintenance. Nassau County Department of Public Works consistently delivers water meeting all New York State DOH and EPA Safe Drinking Water Act requirements.