The answer to 'lifespan of sewer line' is that the typical lifespan of a sewer line is 50-100 years, depending on the material and installation quality. Properly installed sewer lines made of cast iron, PVC, or other durable materials can last for decades with minimal maintenance. However, factors like soil conditions, tree root intrusion, and corrosion can shorten the lifespan of a sewer line.
It's important for homeowners to be aware of the age and condition of their sewer lines, and to have them inspected regularly by a professional plumber. Signs of a failing sewer line can include slow drains, sewage backups, and even sinkholes in the yard. Addressing sewer line issues early can prevent major problems and costly repairs down the road.