Edit: OK, I am not sure where I got 2.5 gallons from because it turns out standard toilets in the US are 1.6 gallons, as the comment below states. It still seems crazy to me that 1.6 gallons can push waste all the way from the toilet to the sewer. I feel like it would stop at some point and need more water to get to the street.
On a side note, I find plumbing and water treatment fascinating.
In: Engineering
Isn’t it possible that it doesn’t make it on the first trip? A couple pee only flushes could help out get there eventually?
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