Laurelton Water Hardness & Quality Report (2026)

Laurelton, New York, in Queens County — a southeastern Queens neighborhood adjacent to Springfield Gardens and Rosedale, a residential Queens community with deep Caribbean-American and African American community roots in the far southeast Queens corridor — receives its municipal water from NYC DEP (New York City Department of Environmental Protection), which draws from the Catskill-Delaware Reservoir system and the Croton Watershed through the NYC aqueduct network. All NYC boroughs including Queens receive the same NYC DEP upstate reservoir supply.

The moderately soft 73.5 mg/L hardness and TDS of 117.9 mg/L are consistent with the standard NYC Catskill-Delaware supply profile. The Catskill Mountains watersheds drain Devonian-Silurian shale and sandstone of the Catskill Delta clastic wedge — the Hamilton Group shale, Marcellus Shale, Onondaga Limestone (thin carbonate layer), and the clastic Catskill Formation sandstone and shale. These predominantly clastic Devonian rocks have minimal carbonate content, producing NYC's characteristically soft, low-mineral upstate reservoir supply. The Catskill-Delaware reservoirs are famous for some of the cleanest large-city water in the US.

At 73.5 mg/L, Laurelton's water is moderately soft — consistent with the NYC supply. Scale forms slowly, soap lathers well, and appliances operate efficiently. Semi-annual descaling is adequate. The PFAS level of 3.6 ppt is favorable for a major metropolitan borough — the NYC DEP reservoir system's protected upstate watersheds, the Catskill-Delaware region's limited industrial development, and the extensive NYC watershed protection program produce a modest PFAS background for a city of 8+ million people.