I know we need to conserve water and such but why? Doesn’t it eventually flow back into the ground or evaporated and rained back down regardless of how it’s consumed, so it’s a cycle? Do we lose a bit per cycle?
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Reservoirs under the ground take decades if not centuries to fill up again. Draining them completely is not a good long term sustainable goal. They should be for emergencies and not the only solution for drinkable water.
Easily accessible water like rivers or streams are good but we have run off of chemicals and oil into them to we need to purify it in order to drink it. Rivers change over time too. A river is not a static formation and a river can “move.” This was one of the many key factors that started the drought in California. Rivers tend to change all the time and there’s an entire science behind this fluid mechanics used by engineers when building structures to tame water.
Great answers in this thread and a great question too!
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