在中佛罗里达大学的一个高中水平的供水课程的学生需要考虑所有的个人用水在24小时内，以比较学生的需求与文献报道的价值。八年来，共有252名男女学生连续上课。算术概率纸上的平均使用图给出了一条很好的直线，平均值为89 gpcd（337 Lpcd）。百分之一的频率值为59 gpcd（223 Lpcd）和119 gpcd（450 Lpcd）。冲厕用水占24.7%，个人清洁用水占59.2%，占83%。 9%的需求。包括6个参考文献、表格、图表。

Students in a senior-level water supply course at the University of Central Florida were required to account for all personal water use over a 24-hour day in order to compare student demands with values reported in the literature. The accounting was done by successive classes over eight years, totaling 252 students of both sexes. The plot of average use on arithmetic probability paper gave a good straight line, with a mean of 89 gpcd (337 Lpcd). The one in one hundred frequency values were 59 gpcd (223 Lpcd) and 119 gpcd (450 Lpcd). Water for flushing toilets, at 24.7 percent, and for personal cleanliness at 59.2 percent, accounted for 83.9 percent of demand. Includes 6 references, table, figure.