If you have any doubts, especially with older cast iron or clay pipes, a single mistake can crack the line and turn a $300 job into a $5,000 excavation. When in doubt, call the pro.
Working on a main sewer line involves heavy equipment, raw sewage, and potentially dangerous tools (like motorized augers). If you are unsure at any step, call a professional plumber. In many areas, the homeowner is responsible for the line from the house to the street (or property line), but the municipality owns the main under the street. Know your responsibility. Phase 1: Diagnosis – Is It Really the Main Line? Before renting a machine, confirm the blockage is in the main line, not a branch drain. how to clear main sewer line
