Yunesit in Facultative Lagoons Wastewater Treatment Plant, British Columbia

Yunesit in Facultative Lagoons is a wastewater treatment plant located in the remote community of Yuneŝit’in, within the Cariboo Regional District of British Columbia, Canada. The plant serves a small population of 213 residents and operates with secondary treatment, which is appropriate for the scale and rural setting. As a secondary treatment facility, the plant uses biological processes to reduce organic matter and suspended solids before discharge. The plant reports a daily discharge volume of 104 cubic meters, reflecting the small community size. In Canada, wastewater treatment for small communities is regulated under provincial guidelines, with British Columbia's Municipal Wastewater Regulation requiring appropriate treatment levels based on receiving environment sensitivity. The plant discharges into the local watershed, which ultimately drains into the Fraser River system via the Chilcotin River. The Fraser River is one of Canada's most important salmon-bearing rivers, supporting diverse aquatic life and providing critical habitat for Pacific salmon species. The remote location in the Chilcotin region means the plant's discharge must protect sensitive headwater streams.

The plant discharges into the Taseko Lake watershed, which flows into the Chilcotin River and then the Fraser River. The Fraser River is a major salmon-bearing river that supports ecologically significant fish populations, including Chinook, sockeye, and coho salmon. The remote Chilcotin region features pristine headwater streams that require careful management to maintain water quality and aquatic habitat.