由于20世纪80年代初休斯顿湖检测到高密度粪大肠菌群，人们对该湖继续用作德克萨斯州休斯顿市的主要饮用水供应表示担忧。该流域的几家污水处理厂的废水被怀疑是指示生物的主要来源，公共卫生官员实施了一项管理计划，以确保这些工厂的正常运行。一项评估该计划有效性的研究表明，该计划取得了成功。该计划要求严格执行余氯要求。然而，这项研究也表明，其他点源和非点源污染是导致湖泊污染的指示生物。此外，尽管休斯顿水处理厂前池水中的总大肠菌群密度在暴雨后有所增加，但成品饮用水水质并未恶化。 包括4个参考文献、表格和图表。

As a result of instances in the early 1980s of high densities of fecal coliform being detected in Lake Houston, concerns were raised about the continued use of the lake as a major drinking water supply for the city of Houston, Texas. Effluent from several wastewater treatment plants in the watershed was suspected as the primary source of indicator organisms, and public health officials implemented a management plan to ensure proper operation of the plants. A study to assess the effectiveness of the plan, which called for strict enforcement of chlorine residual requirements, showed it to be working successfully. The study also showed, however, that other point and nonpoint sources of pollution were contributing indicator organisms to the lake. Also, although total coliform density in the forebay water at the Houston water treatment plant increased after rainstorms, no deterioration of finished drinking water quality occurred. Includes 4 references, tables, figures.