Town of Legal Wastewater System - Secondary Treatment Plant in Legal, Alberta

The Town of Legal Wastewater System is a municipal facility located in Legal, Alberta, Canada, serving a small population of 441 residents. The plant operates under Alberta's Environmental Protection and Enhancement Act, which governs wastewater discharges in the province. The plant provides secondary treatment, a standard level for small communities in Canada, ensuring removal of organic matter and suspended solids. Secondary treatment typically involves biological aeration and clarification. The plant reports a daily discharge volume of 198.00 cubic meters. Treated effluent is released into the local watershed, which drains into the Sturgeon River, a tributary of the North Saskatchewan River. This river system flows into Lake Winnipeg via the Saskatchewan River and Nelson River, supporting diverse aquatic life and recreational uses. The plant's inland location reduces direct marine impact.

The plant discharges into the Sturgeon River basin, which flows into the North Saskatchewan River, part of the Nelson River drainage system ultimately reaching Hudson Bay. The watershed supports mixed-use agriculture and rural communities, with the Sturgeon River providing habitat for fish species such as northern pike and walleye. The plant's secondary treatment helps protect downstream water quality in this sensitive prairie ecosystem.