– How will water eventually run out?

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Water has been described as a finite resource. I’m talking about all water – not fresh drinkin water.

I understand that there are various things that water goes through to be recirculated through the environment, such as being absorbed by the sun and there is a cycle. But how can this lead to water being a finite resource? Are there other ‘destructive’ processes involving water that means it will be lost forever?

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>Water has been described as a finite resource. I’m talking about all water – not fresh drinkin water.

>I understand that there are various things that water goes through to be recirculated through the environment, such as being absorbed by the sun and there is a cycle. But how can this lead to water being a finite resource? Are there other ‘destructive’ processes involving water that means it will be lost forever?

Having “a limited water supply” is simply another way of stating “wastewater treatment is a very time-, infrastructure and resource-intensive process that cannot be provided everywhere”. The logistics involved are mind-boggling and they are what provides an upper limit to the total amount of fresh water that can be used.

Staying below that upper limit (by using less water) is significantly easier than artificially raising the limit by covering the world in wastewater treatment and desalination plants and the infrastructure required to maintain them.

Water is a recyclable resource. It cycles through the environment. You are drinking the same water the dinosaurs drank.

When people talk about water conservation the concern is usually managing droughts in a given area, or having enough clean drinking water. While Earth has plenty of water most of it is in the oceans and desalination is expensive and often done in a way that pollutes the ocean.

We can even react hydrogen and oxygen to make water but on large scales this is impractical because the process makes an explosion.

There is a finite amount of water on Earth, about 10^18 tons. There is only a finite mass for the Earth itself. While 10^18 tons a lot, it’s not an infinite amount. It’s only .025% of the mass of the crust of the Earth.

There is a finite amount of water on Earth, about 10^18 tons. There is only a finite mass for the Earth itself. While 10^18 tons a lot, it’s not an infinite amount. It’s only .025% of the mass of the crust of the Earth.

Water is functionality infinite for our purposes, *clean* and *drinkable* water can run out.

Or at least be used up faster than more is made.