本文探讨了两种工艺——海水淡化和微咸水淡化以及生活污水回收——沙特阿拉伯广泛使用这两种工艺来延长其不太理想的供应。介绍了一些主要的反渗透装置，包括水源水和产品水的特性、装置性能和成本。包括13个参考文献、表格、图表。

This article examines two processes--desalination of seawater and brackish water and reclamation of domestic wastewater--that are used extensively in Saudi Arabia to stretch its less-than-optimal supplies. Some of the major reverse osmosis installations are described, in terms of source- and product-water characteristics, plant performance, and cost. Includes 13 references, tables, figures.