A lot of people advocate peeing in the shower, saying it saves 1.6 gallons of water every time you do it. Well, let’s look more closely at this:
First, when you pee in a toilet, the water isn’t running. But usually, if a person pees in the shower, the water is. The normal flow rate of a normal US house will produce about two gallons of water a minute (ya the rate fluctuates and I’m not trying to be super exact here – but this is close). Peeing, of course, takes a different amount of time for different people, and there are other considerations (how much a person drinks and such). But let’s say it takes a person 30 seconds to pee. If the water is running, that’s a gallon right there.
I think you see my point.
If you pee in the shower, make sure you’re going WHILE you’re doing another shower-related activity like washing your hair or shaving your legs. Otherwise, you’re just flushing the toilet, but with HOT water (which actually makes it worse).