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Water supply network is the most likely element which can fail in the whole water supply system. Failures of the water supply network often results in limitation or lack of water supply to the consumers. Identification and ranking of failure causes in terms of frequency, are the possibility to present proposals of action, related to the replacement or modernization of the water supply network. In addition, the water supply network failures were related to the main parameter important for the water consumers the time of suspended supplying in water.

The paper presents issues related to risks associated with the operation of small water supply systems on the background of water consumer safety assessment made on the basis of risk analysis. Definition of water consumer safety loss as a risk associated with the water consumption of poor quality or water lack was proposed. For this purpose, a three-parameter matrix is implemented with the parameters of the probability of a representative accident scenario, the losses of the water consumers and their protection. Risk management, together with the implementation of protective barriers of small water supply system against threats is a fundamental condition for the continued operation of the system.

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