Triggered by the hot-spring water deception issue following the case at Shirahone Spa, and those cases of contamination with Legionella bacteria at a number of public bathing facilities, users are worried about the quality of onsen water.
白骨温泉をきっかけとした温泉偽装問題、各地の公営温浴施設におけるレジオネラ菌の問題をきっかけとして、利用客は泉質に厳しい眼を注いでいる。