Mackay Estate Water Tower

Mackay Estate Water Tower is a historic water tower located in the Incorporated Village of East Hills in Nassau County, on Long Island, in New York, United States. The tower was originally a component of Clarence Mackay's Harbor Hill Estate.

Description
The tower is a utilitarian structure manufactured by the Phillipsburg, New Jersey-baed firm of Tippett and Wood. The tank is round in plan and topped by a bell-shaped slate roof and copper cupola. The tank stands on eight legs, each of which is 34 feet tall.

Originally a component of Clarence Mackay's Harbor Hill Estate, the water tower and tank are concealed inside a tall structure designed by Stanford White that is constructed of stone, laid in random ashlar, and the roof is spanned by a Guastavino tile dome.

It was listed on the National Register of Historic Places in 1991. It is one of three remaining buildings which were listed at that time – the others are the Mackay Estate Dairyman's Cottage and Mackay Estate Gate Lodge.