自1974年以来，康涅狄格州中南部地区水资源管理局（South Central Water authority）在其青草山地面储水池中运行了一个增压氯化和再循环系统。这项研究的结果表明，如果青草山储槽未配备增压氯化和再循环系统，由于地面储槽的停留时间较长，且进入储槽的水的余氯较低，储槽中的余氯将严重降解。事实证明，增压加氯和再循环系统是维持水箱和相关分配系统水质的一种优秀且经济高效的方法。随着当今成本相对较低的技术和现代化的加氯设备的出现，当局正在考虑通过添加自动加氯装置来改造青草山加氯增压系统- 控制氯化。这种类型的系统将根据在线余氯分析仪发送的输入信号，向上或向下调整加氯速率。未来的修改将确保在消费者需求和温度水平季节性变化期间，在维持目标游离余氯方面有更精确的控制水平。

The South Central Connecticut Regional Water authority has operated a booster chlorination and recirculation system at its Grassy Hill ground storage tank since 1974. The results of this study indicate that if the Grassy Hill tank was not equipped with a booster chlorination and recirculation system, the chlorine residual in the tank would be severely degraded due to the long residence time associated with the ground storage tank and the low chlorine residual of the water entering the tank. The booster chlorination and recirculation system has proven to be an excellent and cost-effective way to maintain water quality in the tank and associated distribution system. With the advent of today's relatively low-cost technology, and modern chlorine feed equipment, the authority is looking into modifying the Grassy Hill booster chlorination system with the addition of automatically-controlled chlorination. This type of system would adjust the chlorine feed rate up or down based on an input signal sent from the on-line chlorine residual analyzer. This future modification will ensure a more precise level of control in maintaining the target free chlorine residual during seasonal variations in consumer demand and temperature levels.