Ok, this makes me GAG!! Pee freaks me out to begin with, forget peeing in the shower!!!! But apparently it’s a good thing, mathematically speaking.
Supposedly, an average flush for a modern toilet uses about 6 liters of water. Adults tend to pee seven times in 24 hours which means we kill 42 liters of water a day. More math, average that out over a year and you’ve gone through, 15,330 liters of water just by peeing!