Risk Analysis as A Management Instruments of Water Suplly System Operation

In this paper the calculations procedure of the Safety Reliability computer program is presented. Basing on seven simulation scenarios the risk analysis results of Water Supply System (WSS) exploitation were determined. The safety reliability of the system operation as a detection probability of secondary contamination of water at any water pipe network area has been estimated by the effect of these computer simulations. Risk analysis on acceptable level takes into consideration setting the quantity and localisation of monitoring water quality points too.