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Abstract
The security of water delivery of the required quality by water supply networks is identified with the concept of reliability. Therefore, a method of reliability evaluation of water distribution of the required quality was developed. The method is based on the probabilistic character of secondary water contamination in the water supply network. Data for the method are taken from monitoring of the water distribution system. The method takes into consideration the number and locations of individual measurement points and the results of the tests of water quality indicators at these points. The sets of measurement points and water quality indicators constitute a matrix research (observation) field in the model. The proposed method was implemented to assess the reliability of a water distribution process with respect to water with the required microbiological quality indicators in a real distribution system.
Highlights
The basic objective pursued by water supply companies is to provide consumers with water of the required quantity, pressure, and quality safe for its consumption
The data for the reliability assessment were obtained from a water quality monitoring system in areal water supply network which is one separate zone of a large water supply system
Water quality indicators are monitored at 12 points
Summary
The basic objective pursued by water supply companies is to provide consumers with water of the required quantity, pressure, and quality safe for its consumption. Water shortages or insufficient pressure are not as dangerous to the security of the water supply as water contamination in the distribution network. As a result of randomly occurring incidents, and not infrequently due to human failures, the water supplied to consumers gets contaminated. There is virtually no possibility of completely securing the water supplied to consumers against potential change of its composition. Such incidents are currently quite common in water distribution systems worldwide. The biggest threat to the safety of water supplied to consumers is its secondary pollution in water supply networks, which is the last link of the water supply system supplying water to indoor installations in buildings
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