对三个国家的五个水处理系统和供水源进行了描述和比较，以此为基础，讨论如何根据当地条件调整处理设施的设计。水质、现有设施、供应来源和调节方法、气候条件、劳动密集型设计与自动化、设备维护、化学品成本、应急计划和固体废物处理都被考虑在内，因为它们与工艺序列和与系统相关的其他考虑因素有关。包括数字。

A description and comparison of five water treatment systems and supply sources located in three countries are used as the basis for a discussion of tailoring the design of treatment facilities to local conditions. Water quality, existing facilities, the supply source and method of regulation, climatic conditions, labor intensive design versus automation, equipment maintenance, cost of chemicals, emergency planning, and waste-solids disposal are considered as they relate to the process train and other considerations relevant to the system. Includes figures.