If you live in a Phoenix home built before 1990, your sewer line is probably either cast iron or clay. Both are fine until they aren't — and when they fail, they fail dramatically. I've been under hundreds of these houses with Phoenix Plumbing Co., and the story is almost always the same.
The first sign is rarely a flooded basement. It's a gurgling toilet, a slow tub drain, or a yard patch that's mysteriously greener than the rest of the lawn. Each of those is your sewer line asking for help — and the earlier we catch it, the more options you have.
Roots are the number one cause of sewer line failure across the Valley. Mature mesquite, palm, and ficus roots find the smallest crack at a pipe joint, then grow into a dense plug that traps everything coming downstream. Hydro-jetting clears them temporarily; trenchless lining or full replacement is the long-term fix.
Hard water scale is the second cause. Phoenix tap water is 16–20 grains per gallon — among the hardest in the country. Over 30 years, that scale builds inside cast iron until the pipe diameter is half what it was, and clogs become weekly. If you want the full story on what our water is doing to every pipe in your house, read why Phoenix hard water is destroying your pipes.
If you've snaked your main line more than twice in a year, it's time to camera the line and have an honest conversation about what's down there. We do that camera inspection for $250 and credit it toward any repair you book.
One more thing worth knowing: main line trouble usually announces itself upstream first. A kitchen sink or tub that plugs up every couple of months is often the same scale-and-roots problem in miniature, and catching it early is a lot cheaper than digging up the yard. I broke down the whole pattern in my post on why your drain keeps clogging.
Frequently Asked Questions
Have a plumbing question this article didn't answer? Call Phoenix Plumbing Co. — a live Phoenix dispatcher picks up, and we'll give you straight advice on the phone.