Rye Water Hardness & Quality Report (2026)

The Rye Water District supplies drinking water to about 15,000 residents in the Village of Rye and parts of Rye Town, New York. Most of this water comes from the Westchester Joint Water Works (WJWW), which sources from Croton System reservoirs like the New Croton Reservoir, Cross River Reservoir, and Muscoot Reservoir. Water is treated at the Croton and Kensico plants using standard filtration and disinfection methods to meet state and federal regulations. The WJWW oversees a vast area, with the Croton Watershed covering over 370 square miles across Westchester and Putnam Counties before draining into the Hudson River.

Beneath the surface, the region's geology is characterized by ancient metamorphic rocks such as the Fordham Gneiss and Manhattan Schist, alongside glacial sediments deposited during the Pleistocene epoch. As water filters through the soils and fractured bedrock, it picks up alkaline earth metals from limestone, dolomitic marbles, and mafic minerals. This process results in a hard water supply that is prone to mineral scaling, with the mixed surface and groundwater profile showing seasonal variations influenced by runoff over this resistant terrain.

This hard water can lead to noticeable scale buildup in appliances like water heaters, dishwashers, and coffee makers, which can reduce their efficiency and shorten their lifespan. You might also find that laundry appears dingy, and soap scum forms more readily on fixtures, potentially requiring more detergent. To combat these issues, homeowners can consider deliming appliances every year or two, or installing a water softener. The Rye Water District reported average pH levels between 7.2 and 7.8 in 2023, and the system remains in compliance with EPA regulations for lead and copper, with no detections of PFAS above maximum contaminant levels.