sustainable concentrate management options. In the complete absence of these factors, the theoretical potential for desalination is effectively unlimited. Large quantities of inland brackish groundwater appear to be available (see Chapter 5) and, in coastal areas, ocean resources are essentially infinite in comparison to human demands. But, as with most resource questions, the theoretical potential and the practical potential are far different. The technological capabilities and the economic, social, and environmental constraints are discussed in detail in Chapters 4-7.

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