Every season of H2O: The Molecule that Made Us ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of H2O: The Molecule that Made Us!

Pulse

Civilizations

Crisis

A landmark, three-part series that tells the human story through our relationship to water. We find out how our success is intimately connected to our control of the molecule, but that the growth of our civilizations has also created a dangerous dependence on a precious resource. One that may be about to run out.

The Best Seasons of H2O: The Molecule that Made Us

Season 1