https://www.climatechangenews.com/2015/04/20/how-three-coastal-cities-are-rising-to-the-climate-challenge/
50% of the world's population lives in urban cities along the coast , desalination of seawater is a practical, long-term solution from a close to limitless source.
Close proximity to the source makes it more feasible and readily available.
Water scarcity across the globe is a growing problem.
17 countries that make up 25% of the population are experiencing high levels of baseline water stress.
With growing technology desalination will become a practical resource to assist in meeting the growing need for portable water.
https://en.wikipedia.org/wiki/Water_scarcity
https://www.argaam.com/en/article/articledetail/id/523714
Future
Only 1% of drinking water is currently sourced from desalination, the demand for desalination has potential to grow.
Desalination technology is already more efficient today than when it was introduced and as research progresses, more efficient membranes and improved equipment are becoming available.
Sustainable options will become more accessible such as Solar Desalination.