In addition, infants had been at risk of getting sick and dying due to drinking unboiled river water, containing household waste products, but now people were able to prevent diseases because they were able to give children water that had been boiled and then cooled.
また従来は生活廃水も流入するような川の水をそのまま飲んでいたために乳幼児が感染症に掛かり死亡する危険性があったところを、湯冷ましを与えられるようになって病気の発生を予防できるようになったという。