选择三组受试者来确定淋浴时使用的水量和温度。120名受试者（60名男性和60名女性）组成的对照组被分为四组（15名男性和15名女性），他们在淋浴后穿着温度分别为18.3℃（65℉）、21.1℃（70℉）、23.9℃（75℉）和26.7℃（80℉）的房间。在26.7°C（80°F）的房间里，淋浴后的舒适度最高。这组人在淋浴时不洗头，平均用36升（9.2加仑）的水洗澡。第二组受试者（12名男性和12名女性）确实洗头，使用了62升（16.4加仑）；这意味着用水量增加了78%。第三组（12名男性和12名女性）在淋浴时安装了限制水流速的淋浴头，使用了24升（6.4加仑）或30%的水。然而，他们将水温设置为41.1°C（106°F），而其他两组的水温设置为38.9°C（102°F）。 在供水温度不同的美国大陆不同纬度地区，讨论了这些发现对水和能源节约以及用水量的影响。引文:德克萨斯州休斯顿ASHRAE学报第88卷第1部分研讨会

Three groups of subjects were selected to determine the amount and temperature of the water used when showering. The control group of 120 subjects (60 men and 60 women) was divided into four groups (15 men and 15 women) who, after showering, dressed in rooms whose temperatures were 18.3°C (65°F) 21.1°C (70°F) 23.9°C (75°F) and 26.7°C (80°F). The greatest amount of comfort after showering was experienced in the 26.7°C (80°F) room. This group, who did not wash their hair while showering used a mean of 36 liters (9.2 gal) of water for their showers. A second group of subjects (12 men and 12 women), who did wash their hair, used 62 liters (16.4 gal); this represented an increase in water used by 78%. A third group (12 men and 12 women), who had their showers fitted with a shower head that restricted the flow-rate of water, used 24 liters (6.4 gal) or 30% less water. However, they set their water temperature at 41.1°C (106°F) vs the 38.9°C (102°F) setting of the other two groups. Implications of these findings are discussed in relation to both water and energy conservation and the amount of water used at different latitudes in the continental U.S. where the temperature of the water supply is different.