The contribution deals with the safety and environmental requirements at water jet dividing. In the frame of experiments were verified safety properties of water jet with using of various types of cutting parameters. The tests were realised on two working tables on each with one cutting head. After evaluating of test results, we can make a conclusion that by dividing of high-press water into two cutting heads and with determining of suitable parameters, it is possible to increase the rate of working process, to make it more effective one and it is the possibility how to save financial resources for the firms in the frame of safety requirements.