A septic tank is a watertight, underground chamber that collects and treats wastewater from homes or businesses before it flows to a drainfield or advanced treatment system. It separates solids (sludge) and oils (scum) from liquid effluent, allowing partial treatment through anaerobic digestion. Canadian Shield Consultants installs durable polyethylene or concrete tanks (500-10,000 L) compliant with OBC Part 8, ideal for Ontario’s rocky terrains and cold climates, ensuring effective wastewater handling for sites without municipal sewers, cottages, etc.