The liberals will vigorously oppose this technology some way, some how. They will invent an imaginary boogeyman if they have to. Anything that results in abundance and prosperity has to be opposed at all costs because with prosperity comes independence - and they loath that concept.
By desalinating water on any large scale, one necessarily increases the salinity of the remaining water left behind. This causes a disruption in the halene isobars, and changes the ambient temperature of the local oceanic body of water, thus displacing native species of fish, and even eliminating the habitat of various flora and fauna. Hence, mass desalization of ocean water both threatens wildlife, and causes global warming on a local scale.
(all of which is true - but, it is also insignificant).
(besides, who gives a rat’s patoot - I am thirsty.)