“We have been assured that there will be no water shortages in any hotels this season,” a Balearic Islands’ tourist officer told edie.

The mobile desalination plants are being built in Palma, Andratx and Calvia, and politicians have promised that taxes will not be raised to pay for them.

A large, stationery desalination plant has been in operation in the Bay of Palma for a year now, but low rainfall last winter means that even the current supplies of desalinated water are not enough.