The WJWW is a non-profit public benefit corporation formed in 1927 consisting of the member municipalities of the Village of Mamaroneck, Town of Mamaroneck and the Town/Village of Harrison. The WJWW supplies water on a retail basis to its member municipalities and to portions of the City of Rye and the City of New Rochelle. It also sells water on a wholesale basis to the Village of Larchmont and Veolia Water of New York which serves Port Chester, Rye and Rye Brook.