The problem is that the organic nitrogen in the urine reacts with the chlorine in the pool to form chloramine, which is more irritating to eyes and skin than what was in the pool before--probably hypochlorites (NaClO, Ca(ClO)2, or LiClO) with cyanuric acid UV-stabilizer--and less effective at killing bacteria.
By peeing in the pool, you are using up the sterilization capacity already present in the water. The water quality manager then has to increase the rate of chlorination far past what is strictly necessary for bacteria, sweat, skin dust, and sunblock, to account for all the pool-pissers. With over-chlorination and a good particulate filter, some amount of pee in the pool can be absorbed by the system. But if you have the capability to exit the pool and pee in a toilet, that is the civilized and courteous thing to do.
If you recognize NaClO above, you might also know it as bleach. And you might also know that it is very dangerous to mix ammonia with bleach, because it forms respiratory irritants like chloramines and cyanogen chloride. The same types of reactions can occur with the urea in urine.
Also, urine can fertilize algae growth in the pool and screw up your pool pH.
even if the pool contained only urine, I don't think there would be any particular health hazard. Maybe if you drink too much of it, you could get some kind of salt poisoning, but then the same risks would occur when swimming in the sea.
Urine is sterile. That's why it's good to pee on wounds.
Edit: Wow, what harsh downmodding :) Yes I was wrong and learned something, isn't it still useful to keep my comment here for other's education?
I literally heard this "urine is sterile" comment in the last couple of weeks. I stand corrected, thanks!
Urine is not sterile,though it normally doesn't contain harmful bacteria, and it's not generally good to pee on wounds, and even the specific cases it's been popularized as a treatment for (jellyfish stings) it's not a good idea.
It came from the time when harmless bacteria weren't recognized as a thing, only infectious germs; urine from a healthy person does not tend to contain harmful bacteria and is this not an infection vector, thus it was held, incorrectly, to be sterile.
Because you don’t like the smell? You’re afraid other people will think you are gross? You have been trained to fear pee?
In normal circumstances getting urine on skin (or drinking small amounts of it for that matter) is not going to cause you any health problem. Urine contains various toxins your liver removed from your bloodstream, so drinking large amounts of it might not be the best idea.
Modern American (and possibly other) cultures have various taboos around cleanliness, including disgust about pee and peeing. But often these are not based on serious health fears.
Actually, if you are just using the bathroom to pee, you should probably wash your hands before you go, as your hands are usually "dirtier" than your genitals are.
Because you just touched your pelvic region which has tons more bacteria than urine itself does. Urine will have some, especially some from the urethra on the way out, so definitely shouldn't be considered sterile, but wash your hands if you're touching your pelvic region in general please.
