The answer to 'when to replace sewer line' is that sewer lines typically need to be replaced every 40-50 years, or sooner if they show signs of significant damage or deterioration. Sewer lines can become cracked, collapsed, or blocked over time due to factors like tree root intrusion, corrosion, or soil shifting. Replacing a sewer line is a major home repair project that requires the expertise of a professional plumber.
Homeowners should consider replacing their sewer line if they notice recurring clogs or backups, slow draining sinks and tubs, or unexplained wet spots in the yard. An inspection by a plumber can help determine the condition of the line and whether replacement is necessary. Replacing the sewer line proactively before major issues arise can prevent costly water damage and disruption to the home.