Since Elbonia is completely underwater already, wouldn't the best idea be to send water purification tablets? Notice, the challenge is 'getting fresh water to Elbonia', not actually sending it. I think that plan is worth a pat on the back from DHB.
Wally's award-winning idea was used by the U.S. Navy in the Philippines to deliver fresh water to hurricane survivors:
"In addition, Sailors onboard George Washington are using innovation when possible - taking empty 48-cubic-foot containers used for shipping large material, lining them with plastic, then filling them with water and freezing the entire container. This frozen container of ice can then be delivered via helo, where it will melt into water when it reaches those on the ground."