Bay Shore Water Hardness & Quality Report (2026)

Bay Shore, New York, in Suffolk County — a major south Long Island suburban and ferry community (Bay Shore is a significant Suffolk County hamlet — a south shore Long Island community in Islip Town on the Great South Bay; Bay Shore is best known as the ferry terminal for Fire Island (the Fire Island Ferry at Bay Shore — the primary public access to Fire Island's western communities including the Fire Island Pines and Cherry Grove — the most famous and historic LGBTQ+ resort communities in the United States; Fire Island has been a central destination of LGBTQ+ culture since the mid-20th century; Bay Shore's ferry terminal is one of the most heavily used ferry terminals on Long Island)); Bay Shore is one of the most diverse south shore Long Island communities (Bay Shore has a significant Central American-American (especially Salvadoran-American and Guatemalan-American) and African-American community; the community's diversity and affordable housing have attracted immigrant communities working in the south Long Island service economy), a diverse Suffolk County community with a primarily working-class, Hispanic-American, and diverse suburban family population — draws its municipal water supply via the Suffolk County Water Authority. Water hardness in Bay Shore measures 170.5 mg/L — classified as hard.

Bay Shore's hard supply reflects the south Suffolk County Long Island Magothy aquifer's calcareous-moderate character. The Magothy Aquifer at Bay Shore draws from Cretaceous calcareous-moderate Magothy Sand with limited softening, producing the hard 170.5 mg/L.

At 170.5 mg/L, Bay Shore residents face regular hard water challenges. Monthly descaling and water softeners are recommended. Suffolk County Water Authority consistently delivers water meeting all New York State DEC and EPA Safe Drinking Water Act requirements.