Where did Earths water come from? The most likely and sensible source is from inside the Earth itself. Water comes out under pressure in the deepest parts of the oceans, the source of some springs are on the top of small hills and even in the desert you can have oasis.
What can create water? Plasma creates water. Water has been found on the
surface of the sun and also being spewed from a
'Black Hole' or more likely what is a Plasma Discharge Event.
"We have been observing the water maser every month since the detection and seen a steady signal with no apparent change in the velocity of the water vapour in the data we've obtained so far," said Dr John McKean of the Netherlands Institute for Radio Astronomy.
"This backs up our prediction that the water is found in the jet from the supermassive black hole, rather than the rotating disc of gas that surrounds it." European Week of Astronomy and Space Science meeting
Remember the days when a Black Hole sucked everything in?
Bernath, an expert in molecular astronomy, said it is surprising to find water vapor on the sun because its surface temperature of 5,700 degrees C causes it to break into atoms of hydrogen and oxygen. Since sunspots are cooler, the atoms can recombine to form water vapor that can absorb escaping infrared radiation....
Bernath said the spectrum of hot water is also important here on earth. "For example, the exhaust of a rocket contains hot water vapor. University of Waterloo and the National Optical Astronomy Observatories in Tucson
Most old civilisations mention The Floods, with similar stories to the Bibles version.
on that day all the springs of the great deep burst forth...Now the springs of the deep and the floodgates of the heavens had been closed... Genesis Chapters 7 and 8
The waters also came up from the earth, from the fountains of the deep.
If water is created by a Plasma discharge (the Sun and all stars are Plasma and so are "Black Holes") then this should mean that there is a Plasma discharge occuring on or below the surface of Earth. Maybe inside it.