Drain Express, a leading Toronto plumbing service, outlines the distinctions between drain and sewer lines at https://drainexpress.ca/drain-line-vs-sewer-line-key-differences-you-should-know/. Their guide notes that drain lines handle wastewater from individual fixtures, while sewer lines transport all waste to municipal or septic systems. Industry data suggests that early issue identification can reduce repair costs by up to 20%. Drain Express uses CCTV cameras and hydro-jetting for precise, non-invasive repairs. Drain line issues are localized, while sewer line problems affect the entire home. Their licensed team provides 24/7 service across Toronto and the GTA. They recommend maintenance every 18-24 months. Drain Express ensures reliable plumbing solutions for homeowners.