Every bit of information I find just talks about water cycling through its different states of matter, I’m aware that water evaporates then rains and returns to the earth but none of them say at which point more water is actually produced or how. Is it actually renewable or is it the concept that there are other sources such as ice and humidity that can keep refilling our supply?
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There is no “new water”. The water that’s been sustaining life on this planet is the same water since the earth formed. That’s why we say that every cup of water you drink has shared at least one water molecule with every historical figure you can think of, from Genghis Khan to Cleopatra (the reason has to do with statistics, but we’ll ignore that for now).
Water simply changes states, or in some cases can decompose into hydrogen and oxygen. None of it is technically lost, the planet is pretty much a closed system where everything is recycled in one way or another. The problem occurs when too much of it is not in a drinkable state.
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