The Wall Beach Water Service Area was established in 1992 and comprises an area lying west of Seahaven Road on the Nanoose Peninsula. During the winter months the water source for Wall Beach comes from three groundwater wells located nearby. The water supply is supplemented, when required, with water from the Fairwinds water system. From May to October each year, the water source to Wall Beach is replaced by surface water from the Englishman River. The water supply is chlorinated. Both the groundwater and surface water sources are stored in the Madrona reservoir.