how long before the planet runs out of all forms of water?

Water will not disapear. Earth has an atmosphere and there are no water being launched to the space because is trapped into the atmosphere.

Maximum can change liquid water into combined chemical elements/rocks. What wouls cause massive climatic disruption and world would end many years before the end of water cycle.

This possibility if closiest to Scifi than reality.

I can think of a couple very, very tiny examples of where water used by humans might not be returned to the environment. One is water contaminated by radiation at a nuclear power plant. Another is trash containing small amounts of water that are buried in landfills. Perhaps their are a couple other minor examples that don't come to mind. It's not much

However, to put this in perspectve...the oceans are deep and there is a LOT of water in them. If the earth were completely smoothed out, not only would water cover the entire planet, but it would do so at a depth of 12,000 feet. In otherwords, more than 2 miles of water would cover every inch of the planet. The water is not going away.

If you're talking about ALL forms of water per se, then probably never unless the earth's temperature deviates so much that all liquid water turns gaseous or solid. Examples of catastrophic events of such magnitudes include ice ages and the impending implosion of the sun in 5 billions years. But then its still water albeit in another state.

If you are talking about the running out of potable drinking water however, then we're probably going to face severe shortages well within our lifetimes. In fact many parts of the world already face critical shortages of clean water.

So it all depends on what kind of water you're talking about

Just where do you think all the water is going to go?

Bearing in mind just how much water all the oceans, seas, lakes, rivers, ice caps, underground caverns etc etc contain, and the fact that most of the water we use is eventually returned to the general "pool" in some way or another I'd say it's going to last a fair while!

clean water intake is already a important concern in a large style of modern-day-day, stepped forward factors; purely ask the solid people of Florida or California. As campbelp2002 reported above, clean water is renewable by using capacity of ability of organic and organic tactics, this inflow on my own is insufficient to assist the inhabitants in any large city section. there are quite a few the final thank you to grant potable water (it rather is, in spectacular difficulty for human use and intake) which incorporate waste water reclamation, and distillation. Gleaning clean water from the sea is extremely inefficient in terms of capacity, and an endless ammount of money is already being spent to verify extra beneficial acceptable the final thank you to grant it. As clean water will exchange into extra and extra scarce as a commodity, that is fee will upward push and additional money could be spent to grant it and make is extra beneficial sustainable. much like oil, that is not any longer likely that it will with out observe "dry up" quicker or later, yet there's a evaluate the now no longer-so-distant destiny on a similar time as our water utilization will could desire to be plenty extra beneficial frugal.

A couple of billion years, give or take a week or two! (When the sun goes nova, water will boil off. Even then, 'all forms of water' is quite a wide definition - there could still be hydrates left!)

Each glass of water you drink has passed through a dinosaurs gut, the water cycle has been going on for a long time.

If the Summer [there's a laugh] we've just had here in UK is anything to go by, I'd say the chances of the Earth's water supply running out is very unlikely.

Rain! We've had it with rain here in UK. What we need is sun and lots of it - when Oh God!

Sea-water?

Considering how much water and ice there is on Earth I would say a consideraby long time. Where is it going to go?