I had a sewer line that kept stopping up about every 8-12 months. I would Rotoroot it out and it would be good to go for a while. Finally it stopped up while I was out of country and I hire a plumber to fix it. He boroscoped it and said the pipe was broken in two spots. One spot was under the house and had to be tunneled in to get it. The contractor who built it 25 years ago did a bad job with the plumbing and the joint had came apart. The 2nd spot was done with a ditching machine. Looked like someone hit it when running the electrical feed cables. Rather than dig up the line and fix it properly, they cut a plastic can and placed it over the top of the cut. Roots just kept growing inside and stopping it up. A couple of years ago, a new house was built next to mine and the contractor ditchwitched in a power cable to the junction box supplying my house. He nicked the cable which shorted it out. Since I wasnt living there at the time, no one knew about it for several months. Surprise when I came home and had brown out conditions on half the house and good power on the other half. Power company came out checked it, found the problem, cut off all my power and said I had to fix the cable before they would turn it back on. I got a couple of estimates $2500 was the cheapest. THEN I called up the new builder. He eventually fixed it but it took about a month. I had to pay the electric company to rent some power cables for a month till all was trenched and replaced. THis time I warned them about the sewer line and they hand dug across it so they could run under it with the electrical. WHAT A NIGHTMARE TO RETURN HOME TOO AND IN THE MIDDLE OF WINTER WITH NO HEAT. Good think I live in the South where it isnt bitterly cold.