Eli5: Why do we use clean, potable water in toilets?
In: 228
It’s pretty standard in Australia to not use potable water in the toilet, at least not as the default option. Building regulations for at least a couple of decades now have required all new houses to direct rainwater from the roof into storage tanks. That gets used in things like toilets and on gardens. If the tanks run out there’s a valve that flips to direct potable water into the lines instead.
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