PROBLEM TO BE SOLVED: To obtain a water supply system capable of allowing a bathing person to recover from a heat attack without making a change in a hardware such as post-fitting of an automatic drain plug or capable of preventing the heat attack of the bathing person.SOLUTION: A water supply system 12 includes: a heat source machine 14 for heating hot water flowing from a reheating return pipe to a reheating supply pipe, to which the reheating supply pipe 16A and the reheating return pipe 16B of a circulation pipe 16 for reheating are connected a circulation port 20 provided in a bathtub 18, for supplying the hot water from the reheating supply pipe 16A, and sucking the hot water in the bathtub into the reheating return pipe 16B a water supply device 26 connected to the circulation pipe 16, for adding water of a temperature lower than a temperature of the hot water in the bathtub 18 from the circulation pipe 16 to the bathtub 18 a biological information sensor 94 provided inside a bathroom 22, for detecting a predetermined bathing state in which a bathing person in the bathtub 18 can be abnormal and a control unit 74 for actuating the water supply device 26 when the predetermined bathing state is detected by the biological information sensor 94.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】自動排水栓を後付施工するようなハードの変更無しで、入浴者を熱中症から復帰させることができる、又は入浴者の熱中症を未然に防止することができる給水システムを得る。【解決手段】給水システム12は、追焚用の循環配管16の追焚往路管16Aと追焚復路管16Bとが接続されると共に追焚復路管から追焚往路管に流れる湯水を加熱する熱源機14と、浴槽18内に設けられると共に追焚往路管16Aから湯水を供給し、浴槽内の湯水を追焚復路管16Bに吸入する循環口20と、循環配管16に接続され循環配管16から浴槽18内に該浴槽18内の湯水より低い温度の足し水を行う給水装置26と、浴室22の内部に設けられ浴槽18内の入浴者が異常となり得る所定の入浴状態を検出する生体情報センサ94と、生体情報センサ94により所定の入浴状態が検出されたときに給水装置26を作動させる制御ユニット74と、を有する。【選択図】図1
