From Webster’s dictionary:

hydrate (verb)
1: to cause to take up or combine with water or the elements of water
2: to supply with ample fluid or moisture
From the Greek hydor meaning water

This is what happens when you have too many bureaucrats and too much government:

EU bans claim that water can prevent dehydration:
Brussels bureaucrats were ridiculed yesterday after banning drink manufacturers from claiming that water can prevent dehydration.

EU officials concluded that, following a three-year investigation, there was no evidence to prove the previously undisputed fact.

Producers of bottled water are now forbidden by law from making the claim and will face a two-year jail sentence if they defy the edict, which comes into force in the UK next month.