What is the Kensico Reservoir?
If you’re one of the nine million residents of New York City or dozens of communities in Westchester, Putnam, Orange or Ulster Counties, the Kensico Reservoir is a vital part of your drinking water supply system.
Located in Westchester County, the Kensico Reservoir is the final stop for 90% of New York City’s drinking water supply before it enters the water tunnels that carry it to consumers’ taps. Normally, all of the water from the City’s Catskill and Delaware watersheds—located in parts of Ulster, Delaware, Greene, Schoharie and Sullivan Counties west of the Hudson River—flows into the Kensico Reservoir.
Protecting the high quality of the Kensico Reservoir along with the rest of the New York City water supply system, which includes 19 reservoirs, three controlled lakes and hundreds of miles of aqueducts, is the responsibility of the New York City Department of Environmental Protection (DEP). Because 27 Westchester communities draw their water supplies from the Kensico Reservoir—directly or indirectly—protecting the quality of Kensico is also important for the residents and businesses of these towns, villages and hamlets.