It’s always confused me why we use our very limited fresh water supply for plumbing & cleaning our vehicles, why can’t we use salt water? We have so much more of it.
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Saltwater is corrosive as many have mentioned and it is only available on the coast and requires a completely y separate water distribution system. It would be terrible to clearna vehicle because you add salt which is quite corrosive.
There is another alternative for toilet usage. You can use gray water, which is wastewater from another source than the toilet. You can collect and filter all or some of it like just from the shower. You need a bit of filtering but not a lot. There is not need to make it potable just clean enough to use in the oiler, plane irrigation, or cleaning a car.
It requites local change in a building but no changes in water and wase infrastructure.
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