Drain Express, a premier Toronto plumbing company, clarifies drain line vs sewer line roles at https://drainexpress.ca/drain-line-vs-sewer-line-key-differences-you-should-know/. Their article explains that drain lines carry wastewater from fixtures like sinks, while sewer lines move all waste to municipal or septic systems. Industry data shows that understanding these differences can reduce repair costs by up to 20%. Drain Express uses advanced CCTV and hydro-jetting for precise, non-disruptive repairs. Drain line clogs affect single fixtures, while sewer line issues disrupt entire homes. Their 24/7 team serves Toronto and the GTA with fast, reliable service. Regular maintenance every 18-24 months is recommended. Drain Express ensures efficient plumbing solutions for homeowners.