不同类型的数学模型已被开发用于饮用水分配。法国巴黎la Defense的水资源总公司采用了两种模式:SANCHO和SWS。SANCHO是一个微生物模型，它允许模拟分销网络中微生物质量的退化。在初始形式中，SANCHO模型计算了直径随着停留时间而减小的管道中氯浓度、可生物降解溶解有机物（BDOC）浓度以及固定和游离细菌生物量的演变。 SWS是一个进行准动力学水力计算的水力模型。本文解释了如何将这些模型结合起来，以创建一个新的模型，该模型允许预测网络中细菌再生的演变、高微生物风险区的位置（取决于净化水水质）以及分配系统的几何形状。本文总结了在一个完整的配电网上用新模型进行的测试和分析。包括41个参考文献、表格、图表。

Different types of mathematical models have been developed for usein drinking water distribution. Generale des Eaux of Paris la Defense, France, utilizes two models: SANCHO and SWS. SANCHO is a microbiological model, which allows for the simulation of the degradation of microbiological quality in a distribution network. In its initial form, the SANCHO model calculates the evolution of chlorine concentration, biodegradable dissolved organic matter (BDOC) concentration and biomass of fixed and free bacteria in pipes in which the diameter is decreasing as a function of residence time. SWS is a hydraulic model that performs quasidynamic hydraulic calculations. This paper explains how these models have been joined to create a new model that allows the prediction of the evolution of bacterial regrowth in the network, the location of high microbiological risk zones depending on treated water qualityand the geometry of the distribution system. The paper summarizes tests and analyses conducted with the new model on a full-scale distribution network. Includes 41 references, tables, figures.