Sustainability of the Public Water Supply and Sewerage Services Operating System: A Case Study on the Example of the Czech Republic

Water services, as a necessity for natural ecosystem functions and a key output from public governance, play a crucial role in forming sustainable relationships between natural, economic, and social factors in the development of society. Primarily, these relationships relate to the natural impacts of weather and climate on the variability of the hydrological cycle. Secondary relationships exist between providers and consumers of the services. Services provided by operators of public water supply and sewerage systems are a specific segment of water services. Their sustainability is controlled on the one hand by public regulation and and on the other by a combination of economic, social, and environmental objectives and the means by which they are achieved. The aim of this paper is, based on the parameters of supply and demand, to quantify the most important aspects of sustainable management of water supply and sanitation enterprises in connection with the current model for state regulation. The methodology is based on an examination of consumer behaviour indicators which can be interpreted from ‘water bills’. The comparison of household expenditure on water services in the Czech Republic shows that some are already approaching, and even exceeding, the limit of what is considered social acceptability.