PROBLEM TO BE SOLVED: To provide an installation structure of a water feed system capable of preventing breakage of a service water pipeline.SOLUTION: An installation structure 10 of a water feed system comprises: an opening/closing part 12 for controlling water feed to a farm field, and being provided on a service water pipeline 102 for supplying service water to a farm field 100; and an electric actuator 14 for opening and closing the opening/closing part. A body case 40 of the electric actuator is attached to the upper side of the opening/closing part. The body case is supported by a support member 70 erected on a surrounding ground surface of the opening/closing part.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】用水パイプラインの破損を防止できる、給水装置の設置構造を提供する。【解決手段】給水装置の設置構造10は、圃場100に用水を供給する用水パイプライン102に設けられて圃場への給水を制御する開閉部12と、開閉部を開閉する電動アクチュエータ14とを含む。電動アクチュエータの本体ケース40は、開閉部上に取り付けられる。この本体ケースは、開閉部の周辺の地面に立設された支持部材70によって支持される。【選択図】図1