The SLWSS monitors groundwater consumption. Much of that well-water withdrawal is eventually exported from the watershed’s surface and underground inventory as community wastewater. It is collected and processed by the Town of Sylvan Lake in its sewage lagoons. To help treated effluent on its way through Cygnet Lake to the Red Deer River, a comparable volume is pumped from Sylvan Lake itself to supplement Outlet Creek flow. In effect, every flush drops the lake level a tiny amount.
The Town of Sylvan Lake is the main licensed user of well water in the watershed. The municipal system annually delivers about 1.5 million cubic metres of water for domestic, business and other purposes. Water wells registered to the Town of Sylvan Lake are shown as yellow dots in this map that was acquired from the Alberta water well database:
Summer Villages, other lakefront settlements, farm and ranch and industrial users outside the TSL rely on groundwater supplies for domestic needs too. Many of the domestic, agricultural and industrial water wells are shown in this map that includes the Sylvan Lake watershed: