Netflix: H2O: Just Add Water is available on Netflix in selected regions, including the United States, Canada, the United Kingdom, Australia, and some European countries.
Amazon Prime Video: The series can be purchased and streamed on Amazon Prime Video in some regions. Check your local Amazon Prime Video store for availability.
Google Play Store: Individual episodes and seasons of H2O: Just Add Water can be purchased and downloaded from the Google Play Store.
Apple TV: You can purchase and stream the series on Apple TV in various regions.
Vudu: H2O: Just Add Water is available to rent or purchase on Vudu.
Peacock: The series is streaming on Peacock, which is a streaming service from NBCUniversal.
It's worth noting that the availability of H2O: Just Add Water may vary based on your location and streaming service subscription. Some platforms may only have certain seasons or episodes available, so be sure to check the details before streaming.