Sliammon Band Wastewater Plant - Secondary Treatment in Area A, British Columbia

The Sliammon Band Wastewater Plant is located on Eagle Drive in the qathet Regional District of British Columbia, serving a small community of 256 residents. This operational facility provides secondary treatment for municipal wastewater, a standard level for communities of this size in Canada. As a secondary treatment plant, it uses biological processes to break down organic matter, reducing pollutants before discharge. The plant handles an average daily flow of 115 cubic meters. Canadian wastewater facilities are regulated under provincial and federal guidelines, including the Wastewater Systems Effluent Regulations (WSER), which set national standards for effluent quality. The plant is situated within 10 km of the coast, discharging treated effluent into the Salish Sea via local waterways. This region supports diverse marine life, including salmon, herring, and orca populations. The plant's operation helps protect the sensitive coastal ecosystem from untreated sewage contamination.

The plant discharges into the Salish Sea, a biologically rich inland sea shared by British Columbia and Washington State. This water body supports critical habitats for Pacific salmon, forage fish, and marine mammals such as humpback whales and southern resident killer whales. The surrounding watershed includes forested coastal streams that provide spawning grounds for salmonids. Effective wastewater treatment is essential to maintain water quality and protect these ecologically sensitive areas from nutrient loading and pathogens.