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thetomahawk42 t1_j5vuh50 wrote

Reply to comment by daamsie in This SoCal business developed a system to reuse water as a way to fight the drought by inkwater

Drinking water is treated to be clean and potable.

Everything else is grey water.

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daamsie t1_j5vvbd6 wrote

Maybe in North America that is the definition. Here we make a distinction between rainwater and grey water.

Rainwater needs no treatment to be used on the garden.

Grey water does.

That's why we don't refer to rainwater as grey water

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