The increase in work performance with low energy input is due to the novel implementation of the available performance variables such as pressure and volume flow. Even with a volume flow of 280 l/min. and 130 bar, large quantities of loose material (stones, sand, sludge, and paper/cellulose) can be transported efficiently. This cleaning method also makes it easy to maintain and preserve old sewer systems (the latter is in line with municipal requirements). Any industrial water can be used to drive the system. The use of recycled water is problem-free.