How to Check Sewer Lines Before Buying a Home

Buying a home is expensive, and sewer-line problems can be among the most disruptive surprises. Before closing, it’s smart to verify that the main sewer line from the house to the municipal connection—or to a septic system, depending on the property—is functioning properly and is in good condition.

While home inspectors may note obvious issues, the most reliable way to assess sewer lines is usually a targeted inspection using a specialized video camera and, when appropriate, pressure testing.