The Valley's sewer lines are younger than most of the county's, and that cuts both ways. The good news is modern materials and fewer decades of wear. The catch is the landscaping. It has matured over 20 years, the roots are finally reaching the depth of the lines, and newer doesn't mean immune. It means the problems are just now arriving.
When they do, the camera is the place to start. A sewer inspection runs a small camera into the line from the cleanout, the capped pipe outside that opens into your sewer line, and down toward the street with live video, and the situation is usually clear on screen. Roots finding a joint, a low spot from settling, construction debris left over from the build, or a line in genuinely good shape that needed one clearing. Watch it live if you want. Every conversation after that is grounded in what's actually down there instead of what somebody suspects.
It's worth the look at the decision moments, before you approve any significant repair, before you buy a home in the Valley, and before you write off a recurring backup as bad luck. A short video lets you see a line you've never seen, and the decisions after that are yours, made on evidence, at your pace.