This article presents an energy-saving electric drive of a direct-flow water supply system. The analysis of various water supply systems for animal watering is given. An experimental installation of an adjustable electric drive of an asynchronous electric drive is presented, which allows selecting parameters for a frequency converter for the technological process and reducing the consumption of electrical energy by up to 10%. The hypothesis of reducing the energy consumption of the pumping unit when regulating the voltage and frequency of the supply network is confirmed.