Let it be known that if you ever had any doubts about the cognitively evacuated morons who run the EU, those doubts have now been laid to rest with this EU directive which officially declares that water cannot prevent dehydration.
They might as well just declare that breathing cannot provide oxygen to your body, or that eating food cannot provide calories and nutrition. The EU has reached a level of mouth-gaping, slobbering stupidity that no nation in human history has quite matched.
Physicians Scientific Informational Symposium