Anything you drink is recycled urine...
There are 6 billion people in the world, all drinking and urinating.
Add to that all the animals, insects, etc... who all have their own renal system.
Then also add the fact that our planet has known life for over 4 billion years, all of these lifeforms having some kind of renal system (even single cell organisms have to get rid of their waste).
About every water molecule on our planet has been part of someone's urine in some part of the history, so theoretically... you shouldn't drink anything :p
I can fully understand the feeling you're having, but it's all just in your mind. Just think about it rationally, and you'll see that it's no big deal after all
-Toine