简单、廉价且永久的措施可以显著改善水源水质，从而降低水处理成本。这里给出的示例可能并不直接适用于所有公用事业，但它们可能会建议替代数百万美元的新设施。综述了颜色、浊度、混凝剂（尤其是聚电解质）和水生有机物的特性。包括人物、照片。

Simple, inexpensive, and permanent measures can significantly improve the source water quality and thus reduce the costs for water treatment. The examples presented here may not be directly applicable to all utilities, but they may suggest alternatives to new multimillion dollar facilities. Reviewed are the specifics of color, turbidity, coagulants - especially polyelectrolytes, and aquatic organics. Includes figure, photographs.