The Roslyn Water District is a public water utility district in Nassau County, on Long Island, in New York, United States.The Roslyn Water District was established in 1910.

[1] The Roslyn Water District serves the following communities:[1][2][3][4] The Roslyn Water District also sells the Glenwood Water District with its water (as that district lacks its own wells), along with some water to the Albertson Water District.

[1][5] The Roslyn Water District has 10 interconnections with neighboring districts.

[5]