本文描述了一种称为缓冲强度的过程，即水抵抗pH值变化的能力。给出了一个实例，说明了缓冲强度在使用地表水并通过常规过滤处理的中型水系统中的实际应用。供水系统每月在分配系统中采集20个pH值样本。最初，整个分配系统的pH值范围为7-9。初始条件为pH为7.8，DIC为2 mg/L。然后DIC增加至7 mg C/L，pH范围从2.2降至1.6，所有pH测量值的标准偏差降至0.81至0.51。然后将pH值增加至9.2，pH值范围降至0.49，标准偏差降至0.24。

This paper describes a process called buffer intensity, which is the ability of a water to resist a change in pH. An example was given of the practical application of buffer intensity in a medium sized water system that uses surface water and is treated by conventional filtration. The water system collected 20 samples for pH in the distribution system monthly. Initially the pH ranged from 7-9 throughout the distribution system. The initial conditions were a pH of 7.8 and DIC of 2 mg/L. The DIC was then increased to 7 mg C/L and the pH range was reduced from 2.2 to 1.6, and standard deviation of all the pH measurements was reduced to 0.81 to 0.51. The pH was then increased to 9.2, and the pH range dropped to 0.49 and the standard deviation to 0.24.