The country of Israel has desalination plants to help with its water needs.<p>If California had a functional government, seasonal drought wouldn't be an issue.
<a href="https://www.gov.il/en/departments/general/project-water-desalination-background" rel="nofollow">https://www.gov.il/en/departments/general/project-water-desa...</a><p>"In order to comply with the desalination plan set out by the cabinet, 5 desalination plants were constructed over the years, in Ashkelon (2005), Palmachim (2007), Hadera (2009), Sorek (2013) and Ashdod (2015), with total production capabilities of some 585 million m3."