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> Where I live the temperature of the water is about the same as the temperature of the air

How do you manage that? By me the water comes in from underground pipes and is always the temperature of the ground, which stays pretty constant (and cold) year round.

> suggest washing in salt water

And aside from the other things you mentioned, most people don't have access to salt water. In the US it's only available on the coasts, but the coasts are usually premium land and not available for industry.

I do think we've basically come to an agreement that it depends mainly on the process used for washing the bottle.

With two points of disagreement: I still think the extra labor needed tips the energy balance away from reuse. And I think that trading water for energy is worth it.

> reduce the demand ... you need fewer bottle factories.

It's much easier to make a factory larger than it is to build a whole new one.



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