东湾市政公用事业区（EBMUD）于1998年初将其二级消毒剂分配系统从游离氯改为氯胺。在配水系统管道和蓄水池中实施了广泛的水质监测计划，以评估游离氯和氯胺的维护情况。将氯胺稳定性的实验室试验结果与分配系统结果进行了比较。对初始硝化控制策略进行了评估，并确定了总余氯和滞留时间的运行目标。

The East Bay Municipal Utility District (EBMUD) has converted its distribution system secondary disinfectant from free chlorine to chloramine in early 1998. An extensive water quality monitoring program was implemented in the distribution system pipelines and storage reservoirs to evaluate maintenance of free chlorine and chloramine. Laboratory test results on the stability of chloramine were compared with the distribution system results. Initial nitrification control strategies have been evaluated and operational goals for total chlorine residual and detention time established.