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The article focuses on factors that might be crucial if an energy efficiency in the field of water supply and wastewater treatment is considered. There are most common drawbacks in maintenance of water supply and wastewater system described as well as the directions on the improvement of situation. The main directions of technological energy saving is the use of energy efficient technologies; energy efficient engineering solutions, and methods and equipment for regulating the operation of facilities and equipment.

Review of energy saving and energy efficiency approaches applied in water sector in Russia