法国卡斯特诺达尔的水质严重恶化。这座位于法国西南部的城市有11000人口，由钻孔和天然泉水供应。大多数客户投诉都是因为水变色以及味道和气味问题。本研究的目的是通过在城市供水系统的处理侧和配水侧采取不同的措施来解决这些水质问题。本文讨论了问题的诊断，并描述了为纠正这种情况而采取的措施。包括9个参考文献、图表。

Water quality in Castelnaudary, France suffered from severe degradation.This city of 11,000 in southwestern France is supplied by boreholes and natural springs. Most of the customer complaints were of discolored water and taste and odor problems. The objectives of this study were to address these water quality issues by taking different actions at the treatment side as well as at the distribution side of the City's water system. This paper discusses the diagnosis of the problems and describes the actions takento remedy the situation. Includes 9 references, figures.