Abstract: The aim of the research is to present the overall and significant impact of the urban water system on the environment, i.e. environmental protection in the context of increasing the use of renewable energy sources, and how such energy sources affect climate change in general. Renewable energy sources include: wind energy, water energy, solar energy, hydrogen energy, geothermal energy, biomass energy, tidal energy, wave energy, cold energy from space and others. The application of the principles of sustainable development leads to the need to use renewable energy sources, improve their technical characteristics and functioning, and find new methods and technologies to finally abandon the use of non-renewable energy sources. To this end, it is necessary to pursue a policy based on strategic planning and the use of an integrated approach in the operation and management of urban water systems.

Keywords: urban water system, water supply, drainage, wastewater treatment, renewable energy sources, climate change

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