Aegir and the elemental plane of water has submerged your body with its purity and swift flow.

Your Dexterity score increases by 1.

You are now have advantage on saving throws against the poisoned condition and resistance to poison damage. You can drink any manner of water, so long as it is of an appropriate temperature - this includes seawater, thin mud, and other such liquids - and you still gain the benefits of drinking normal water.