This has been bugging me everytime I go to the restroom, and I finally got a picture of it. Someone correct me if I’m wrong, but does 1 gpf mean gallon per flush?1 GALLON per flush? That’s 3.8 litres, and that’s no small amount. I’m really clueless about water usage in flushing systems, but isn’t that a lot to be used to flush?

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