Glenwood Wastewater Lagoon - Cardston County, Alberta | Secondary Treatment Plant

Glenwood Wastewater Lagoon is a municipal treatment facility located in Cardston County, Alberta, Canada. It serves a small rural community with a population of 462, reflecting the typical scale of wastewater infrastructure in sparsely populated areas of the province. The plant provides secondary treatment, which is the standard level required under Canadian federal and provincial regulations for communities of this size. Secondary treatment effectively removes biodegradable organic matter and suspended solids, ensuring the effluent meets basic environmental quality standards before discharge. The treated wastewater is discharged into local watercourses that ultimately drain into the Oldman River basin, part of the larger Saskatchewan River system. This watershed supports diverse aquatic life and is important for regional agriculture and recreation. The plant's operation helps protect downstream water quality in this ecologically sensitive prairie river system.

The plant discharges into local streams that flow into the Oldman River, a major tributary of the South Saskatchewan River. This watershed eventually drains into Hudson Bay via the Nelson River system. The region supports species such as walleye, northern pike, and various waterfowl, making proper wastewater treatment essential for maintaining aquatic health and recreational uses.