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The complete
encyclopedia
of water.

Explore the science, history, geography, and future of the most essential molecule in the universe.

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AT A GLANCE

Water by the Numbers

71%
of Earth's surface is covered by water
Oceans • Rivers • Lakes • Ice
2.5%
of all water is freshwater
Most locked in ice caps & glaciers
97%
of Earth's water is in oceans
Saline water
1.4B
km³ total volume of water on Earth
A constant amount for billions of years

Global Freshwater Withdrawal by Sector

Annual withdrawal in cubic kilometers (approximate)

2023 Data
Agriculture remains the largest consumer of freshwater globally.
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Latest from the World of Water

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Research 2 days ago

Scientists discover vast hidden aquifer beneath Sahara Desert

A team from NASA and European researchers has mapped one of the largest underground freshwater reserves ever found.

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Crisis 2026 Jan 2026

2026: Multiple regions declare 'Water Bankruptcy' amid global crisis

Several countries and Indian states have officially declared water bankruptcy as groundwater levels hit critical lows and climate-driven droughts intensify. Experts warn this marks a turning point in the global water crisis.

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Space Jan 5, 2026

JWST detects water vapor in atmosphere of distant exoplanet

The detection on WASP-96b brings scientists closer to understanding water distribution across the galaxy.

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WHY IT MATTERS

Water is life.
Understanding it is our responsibility.

From the tiniest cell to the largest galaxy, water shapes everything. Water Omnis exists to make this knowledge accessible to everyone.