The method
How pressurized water cleans a line
Water under high pressure is sent along the inside of the pipe, breaking up obstructions and scouring buildup from the walls. Rather than only opening the center of a clog, it can address grease, sludge and debris along the length of the line being serviced.
The equipment and approach are matched to the line and the restriction. Jetting is one of several professional cleaning methods rather than the answer to every slow fixture, so the cause of the restriction is identified before jetting is chosen.
