近年来，法国巴黎附近的水源水质恶化，需要对饮用水的传统化学处理进行重新评估。本文概述了水资源公司使用的评估过程，并讨论了目前的治疗方法。目前，天然生物净化与活性炭相结合，减少了所需化学试剂的数量，也改善了水的味道。臭氧在过滤前、活性炭过滤前和碳过滤后使用。本文还讨论了在处理装置的最后一点使用氯，以减少不良副产品（如三卤甲烷）的形成。强调了这些改进技术的成本，表明仅比传统化学试剂成本增加6%。 有机物去除率增加了15%，而分配系统内的细菌生长量下降。新治疗系列的未来发展将受到多种因素的影响，包括以下因素:用于血液透析家庭治疗的水的最大铝含量；地下水中的硝酸盐浓度；建设优质软化水设施；污泥处理和各种技术解决方案的成本，如混凝剂替代。包括70个参考文献、表格和图表。

Source water near Paris, France has deteriorated in recent years, necessitating a reevaluation of traditional chemical treatment of drinking water. This article outlines the evaluative process used by the Compagnie Generale des Eaux and discusses present treatment methods. Currently, natural biologic purification in conjunction with activated carbon reduces the amount of chemical reagents needed and also improves the taste of the water. Ozone is used before filtration, before activated carbon filtration, and after carbon filtration. This article also discusses the application of chlorine at the final point in the treatment train for purposes of reducing the formation of undesirable byproducts such as trihalomethanes. The cost of these improved techniques is highlighted, indicating only a 6 percent increase over traditional chemical reagent costs. Organics removal has increased 15 percent, while bacterial growth within the distribution system has declined. Future developments in the new treatment train will be affected by a variety of factors, including the following: maximum aluminum content of water used for hemodialysis home treatments; nitrate concentrations in groundwaters; construction of high-quality water softening facilities; and costs of sludge conditioning and various technical solutions such as coagulant substitution. Includes 70 references, tables, figures.