H2O: Just Add Water
H2O: Just Add Water revolves around three teenage girls facing everyday teen problems with an added twist: they cope with the burden of growing a giant fin and transforming into mermaids whenever they come in contact with water.
Ratings
Based on audience scoresWhere to stream H2O: Just Add Water
Streaming now in the United States on Netflix, Amazon Prime Video, Dove Amazon Channel, Hoopla, The Roku Channel, and Pluto TV.
Rent or buy in the United States on Amazon Video, Apple TV Store, Google Play Movies, and Fandango At Home.
Trailer
H2O: Just Add Water Trailer
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Frequently asked questions about H2O: Just Add Water
Where can I watch H2O: Just Add Water in the United States?
H2O: Just Add Water is available to stream on Netflix, Amazon Prime Video, Dove Amazon Channel, Hoopla, The Roku Channel, and Pluto TV in the United States, and to rent or buy on Amazon Video, Apple TV Store, Google Play Movies, and Fandango At Home. Streaming availability is provided by JustWatch and can change over time.
Is H2O: Just Add Water on Netflix?
Yes. H2O: Just Add Water is streaming on Netflix in the United States, alongside Amazon Prime Video, Dove Amazon Channel, Hoopla, The Roku Channel, and Pluto TV.
Can I watch H2O: Just Add Water for free?
H2O: Just Add Water streams free with ads in the United States on Hoopla, The Roku Channel, Pluto TV, and Tubi TV. A subscription is not required, though the service may ask you to register.
What are the ratings for H2O: Just Add Water?
H2O: Just Add Water scores 7.8 on The Movie Database.
Who stars in H2O: Just Add Water?
H2O: Just Add Water stars Phoebe Tonkin, Cariba Heine, Indiana Evans, Luke Mitchell, and Burgess Abernethy. Jonathan M. Shiff is the creator.
How many seasons of H2O: Just Add Water are there?
H2O: Just Add Water has 3 seasons and 78 episodes, and is ended.
How long does it take to watch all of H2O: Just Add Water?
All 78 episodes of H2O: Just Add Water add up to about 31 hours 12 minutes at roughly 24 minutes each. At two hours a night that is about 16 evenings; at four hours a day it takes about 8 days.
What network is H2O: Just Add Water on?
H2O: Just Add Water airs on 10, and is produced by Pacific Film and Television Commission, Jonathan M. Shiff Productions, and Network Ten.
Ratings and streaming availability are aggregated from third-party sources; metadata from The Movie Database (TMDB), streaming data from JustWatch. This product uses the TMDB API but is not endorsed or certified by TMDB. Streaming availability checked September 2026.