The need for freshwater will rise globally in the ensuing decades due to urbanization, industry, and population growth, necessitating the creation of new water sources. Some of the current approaches to augment freshwater supplies include intelligent land-use planning, regional water transfers that do not negatively impact the environment, water conservation, recycling and reuse, and the remediation of low-quality local water sources. Still, they will not be sufficient to meet this need. Seawater desalination could be the only feasible option for water-scarce nations that have already put all other freshwater generating methods into place to supply the water needed to sustain agriculture, the populace, and economic growth. Although it must be considered after all other choices have been implemented, seawater desalination should be recognized as an essential part of the portfolio of water supply options since it offers the possibility for a plentiful and consistent source of freshwater that has been cleansed from the vast seas.