What LA Sanitation says is behind more than half of backups
LA Sanitation says more than half of sewer backups are caused by tree roots and by fats, oils and grease poured down drains. It also explains how the grease does its damage: poured down household drains, it cools, solidifies and sticks to the inside walls of sewer pipes, and over time the buildup restricts wastewater flow until it causes sewer overflows in homes.
Roots and grease buildup are two of the things a camera inspection helps us evaluate. When a backup keeps coming back, the inspection can show whether roots, grease or both are in the reachable part of the line, and the findings shape what comes next, such as cleaning or hydro jetting.

