An interesting report and wrap up here. "What are the consequences of a local origin of water?
This does not tell us when the oceans appeared on Earth's surface, but we now know that Earth's water was not necessarily delivered by hydrated bodies that formed very far from the sun. However, we do not yet understand in what form(s) and by what process hydrogen was incorporated and stored in rocks of the inner solar system. The presence of hydrogen in inner solar system rocks is particularly important because it could have been a water source for the other rocky planets (Mercury, Venus, and Mars). Similar rocks could then represent a source of water for planets orbiting other suns, a condition to develop life, at least life as we know it."
Other models promote pebble accretion as the solution. The Milky Way may be swarming with planets with oceans and continents like here on Earth,
https://phys.org/news/2021-02-milky-swarming-planets-oceans-continents.html, Feb-2021
https://www.sciencedaily.com/releases/2021/02/210222192839.htm, Fed-2021. "Summary: According to a new study, Earth, Venus and Mars were created from small dust particles containing ice and carbon. The discovery opens up the possibility that the Milky Way may be filled with aquatic planets."
Interesting methods for creating Earth's abundant water supply we observe and measure today in science. There is also the giant impact model using Theia to create the Moon. Various N-body simulations demonstrate that Theia *can remain stable* before hitting the proto-Earth from 30 million to one billion years after solar system formation. Theia has much to say about Earth retaining water too
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All of the methods used so far to create Earth's abundant water supply we see today use catastrophism in the solar system in some form or another to explain Earth's abundant water supply. Catastrophic events can also create an Earth very sterile and dry today.