Hydro jetting is a method used by professional plumbing contractors to clean clogged or slow sewage lines. A blast of water at high pressure is sent into the lines that will usually remove blockages and build up. Hydro jetting systems normally use about 35,000 psi, which works very effectively.
A video inspection should be performed first to determine the cause and location of the problem. If tree roots are a problem, the high pressure should cut through them. However, a snake may need to be used first to tear up heavy roots. Hydro jetting will not solve problems with broken pipes and could cause weakened areas to break. In addition, a video inspection can reduce the possibility of sewage back flushing into other areas.