“…However, we can distinguish the following causes of failures [7,8,9,10,11,12]: design errors, mechanical or material defects, internal or external corrosion, operational errors, bursting with overload, transverse or longitudinal cracks, fractures, other or unknown causes. Failures can also be caused by: earth moves or other natural hazards [13], external impact or other random events [14], errors in connection [15]. The formation of failure requires analysing several reasons, it is related to errors in the design, construction and operation of water supply network [12].…”