There is a solid substance from which water can be liberated after transportation. Unfortunately, you need to keep it quite cold to prevent premature liberation of the water.

...No you can't really make something like that where you end up with pure water and the catalyst but you could in theory just transport a hydrated salt and get the water out later but it just doesn't make sense to do that instead of just transporting the water. Also, pretty much any time you're transporting water, it being a liquid is beneficial. To prevent a ton of sloshing all you need is some baffles.

Cucumber is 95% water. Would that do?

What ? Are you serious or is this some kind of joke that I'm missing.

"dehydrated water" !!

Probably the most efficient way would be something you could burn to yield water, like a hydrocarbon or carbohydrate, if you had to liberate the water by chemical process. Or you could use something to contain the water in a solid structure, like a sponge or plant tissue. None of these options makes a lick of sense to simply accomplish transportation of water.

I'm pretty sure that if you could add water to something other than water to get more water than you had before, that would violate the law of conservation of matter.

Polywater...

http://en.wikipedia.org/wiki/Polywater

Your username makes me think you're trolling. Are you asking a genuine question or messing around?