本扩展摘要讨论了EPANET的局限性。与大多数其他配电系统水质模型一样，EPANET仅限于跟踪 单个部件在整个管道和管道网络中运输时的动力学 储罐。这样的模型不能考虑散装组件之间的相互作用。 随水流速度和固定在管道上的表面构件一起运输 墙这些都是严重的限制，因为所有水质指标都是由反应产生的 在化学或生物成分之间，可能以散装形式悬浮或溶解 水，或附着或吸附在管壁上。单一物种模型意味着 配水系统的水质不能用数学方法来描述 模仿潜在的机制。这是一个限制性框架，排除了 对替代流程模型进行实验，研究和实践有限 过去15年网络水质模型的发展。除了 重要的软件和算法改进，今天的配水系统 质量模型的发展几乎没有超过1988年首次报道的（格雷曼， 1988). 这个扩展的摘要给出了几个例子，说明了超越单一物种水质模型的必要性，并提出了两个EPANET水质模型扩展，可以改进该技术。仅包括扩展摘要。

This extended abstract discusses the limitations of EPANET. Like most other distribution system water quality models, EPANET is limited to tracking the dynamics of a single component as it is transported throughout the network of pipes and storage tanks. Such models cannot consider interactions between bulk components that are transported with the water velocity, and surface components that are fixed to the pipe wall. These are serious limitations, since all water quality indices result from reactions between chemical or biological components that may be suspended or dissolved in bulk water, or attached or adsorbed to the pipe wall. A single specie model implies that distribution system water quality can not be described mathematically in a way that mimics the underlying mechanisms. It is a restrictive framework that precludes experimentation with alternative process models, and has limited research and development of network water quality models for the last 15 years. Aside from significant software and algorithmic improvements, today's distribution system water quality models have progressed little beyond those first reported in 1988 (Grayman, 1988). This extended abstract presents several examples that illustrate the need to move beyond single-specie water quality models, and suggests two EPANET water quality model extensions that could improve the technology. Includes extended abstract only.