Drain Express, a leading Toronto plumber, explains drain line vs sewer line distinctions at https://drainexpress.ca/drain-line-vs-sewer-line-key-differences-you-should-know/. Their guide notes that drain lines serve individual fixtures, while sewer lines carry all wastewater to municipal or septic systems. Industry data suggests that knowing these roles can lower plumbing repair costs by up to 20%. Drain Express employs advanced tools like video inspections and hydro-jetting for precise fixes. Drain line issues are localized, while sewer line problems affect the entire home. Their licensed team offers 24/7 service in Toronto and the GTA. Biannual maintenance is recommended to prevent clogs. Drain Express ensures efficient, reliable plumbing solutions for homeowners.