How Long Does a Sewer Line Last? Typical Lifespans

Homeowners rarely think about sewer lines until there’s a backup, foul odor, or a drain that suddenly won’t clear. But knowing how long a sewer line typically lasts—and what speeds up failure—can help you plan maintenance and avoid emergency repairs.

Typical sewer line lifespans by material

The expected service life varies widely because sewer pipes are built from different materials and installed under different conditions. In many residential settings, a sewer line can last