If you decide to pee in the shower, it's best to do it in your shower, not a public one. "Generally speaking, urine is sterile since it has no 'living' organisms," Dr. Brahmbhatt told Health. "But this isn't always the case since someone could have a urinary tract infection. Also, the urine could pick up some bugs from the end of the urethra as it exits." So peeing in your shower, not a public one, keeps you from being exposed to those bugs.