The Union Water Supply System (UWSS) is a municipal water supply system that is jointly owned by the
Ontario municipalities of Leamington, Kingsville, Essex and Lakeshore. The UWSS is governed by a joint
board of management that consists of board members from each of the four owner municipalities. Day to
day administration of the system is led by the UWSS General Manager. The system is operated under
contract by the Ontario Clean Water Agency (OCWA). Treated water from UWSS is supplied to the four
owner municipalities for local distribution to residents and businesses. The following maps show the
UWSS service area.