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The Best Episodes of H2O: Just Add Water

Every episode of H2O: Just Add Water ranked from best to worst. Let's dive into the Best Episodes of H2O: Just Add Water!

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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

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Episode Rankings

  1. #1 Fan Favorite
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    H2O: Just Add Water Season 1 Episode 25 - Dr. Danger
    7.5/10(4 votes)

    #1 - Dr. Danger

    S1:E25

    It's time for Emma's family's annual vacation trip, but she can't go as the risks are too high. But all her excuses don't go very well with her family. Meanwhile, with the return of Dr Denman, Zane is closer than ever to cracking the girl's secret.

    Director:Jeffrey Walker
    Writer:Unknown

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  2. H2O: Just Add Water Season 1 Episode 15 - The Big Chill
    7.3/10(4 votes)

    #2 - The Big Chill

    S1:E15

    Emma is doing well at her new job at the JuiceNet cafe, but when she is left in charge, she has trouble managing her new employee, Rikki.

    Director:Jeffrey Walker
    Writer:Unknown

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  3. H2O: Just Add Water Season 1 Episode 16 - Lovesick
    7.3/10(4 votes)

    #3 - Lovesick

    S1:E16

    Rumour has it that Cleo has a boyfriend and her friends and family are trying to find out who he is. Meanwhile, Zane continues his search for the 'sea monster' he saw.

    Director:Jeffrey Walker
    Writer:Unknown

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  4. H2O: Just Add Water Season 1 Episode 17 - Under the Weather
    7.3/10(4 votes)

    #4 - Under the Weather

    S1:E17

    The girls have to fake sick as a result of a thunderstorm, so their secret won't be discovered at school. But their 'sickness' attracts the attention of doctors.

    Director:Jeffrey Walker
    Writer:Unknown

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  5. H2O: Just Add Water Season 1 Episode 18 - Bad Moon Rising
    7.3/10(4 votes)

    #5 - Bad Moon Rising

    S1:E18

    Zane's quest to find the 'sea monster' has led him to Mako Island. Rikki loses control of her powers as a result of the full moon and Zane finds her.

    Director:Jeffrey Walker
    Writer:Unknown

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  6. H2O: Just Add Water Season 1 Episode 21 - Red Herring
    7.3/10(4 votes)

    #6 - Red Herring

    S1:E21

    Emma decides to change her look by colouring her hair red. Though nothing is that simple when you're half-mermaid. Zane asks Rikki out on a date.

    Director:Jeffrey Walker
    Writer:Unknown

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    The 20 WORST Episodes of H2O: Just Add Water

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  7. H2O: Just Add Water Season 1 Episode 23 - In Too Deep
    7.3/10(4 votes)

    #7 - In Too Deep

    S1:E23

    Rikki finds a locket that looks the same as Miss Chatham's in a Jewellery shop and she is determined to get it.

    Director:Jeffrey Walker
    Writer:Unknown

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  8. H2O: Just Add Water Season 1 Episode 24 - Love Potion #9
    7.3/10(4 votes)

    #8 - Love Potion #9

    S1:E24

    With the school dance coming up, Emma and Cleo hope Byron and Lewis will ask them out. Meanwhile, Miss Chatham and Lewis argue about which has more merit – magic or science.

    Director:Jeffrey Walker
    Writer:Unknown

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  9. H2O: Just Add Water Season 1 Episode 26 - A Twist in the Tail
    7.3/10(4 votes)

    #9 - A Twist in the Tail

    S1:E26

    Dr Denman sets up a trap for the girls at Mako Island and Zane is forced to decide who he should be helping.

    Director:Jeffrey Walker
    Writer:Unknown

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  10. H2O: Just Add Water Season 1 Episode 1 - Metamorphosis
    6.8/10(16 votes)

    #10 - Metamorphosis

    S1:E1

    Three very different teenage girls, Emma, Cleo and Rikki, facing everyday teenage problems. With a twist: they're mermaids; after discovering a magic place where they are given incredible powers over water that change their lives forever.

    Director:Colin Budds
    Writer:Philip Dalkin

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  11. H2O: Just Add Water Season 2 Episode 1 - Stormy Weather
    6.7/10(3 votes)

    #11 - Stormy Weather

    S2:E1

    The girls catch a glimpse of the full moon and Lewis tries to keep them grounded. Drawn back to Mako Island during a rare planetary alignment, they experience unpredictable shifts in their abilities. Cleo navigates some difficult new family dynamics at home.

    Director:Jeffrey Walker
    Writer:Unknown

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  12. H2O: Just Add Water Season 2 Episode 2 - Control
    6.7/10(3 votes)

    #12 - Control

    S2:E2

    The girls have problems with their new powers and Cleo finds that Lewis isn't helping. A new girl called Charlotte arrives and hits it off with a certain someone.

    Director:Jeffrey Walker
    Writer:Unknown

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  13. H2O: Just Add Water Season 2 Episode 3 - The One That Got Away
    6.7/10(3 votes)

    #13 - The One That Got Away

    S2:E3

    Rikki tries to avoid Zane when he comes back, but needs his help after an incident with a speedboat. Meanwhile, Charlotte continues to flirt with Lewis and Cleo worries for their secret.

    Director:Jeffrey Walker
    Writer:Unknown

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  14. H2O: Just Add Water Season 2 Episode 4 - Fire and Ice
    6.7/10(3 votes)

    #14 - Fire and Ice

    S2:E4

    Trouble arises when Emma throws a party to prove she is as fun as Rikki. Meanwhile, Lewis is trying to prove his manhood and Cleo is receiving cards from a secret admirer.

    Director:Jeffrey Walker
    Writer:Unknown

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  15. H2O: Just Add Water Season 2 Episode 5 - Hocus Pocus
    6.7/10(3 votes)

    #15 - Hocus Pocus

    S2:E5

    Trouble is in the air as the Setori's start to suffer and the JuiceNet is endangered by a new bar. But when Lewis finds a book of mermaid spells, the girls attempt to use a potion to fix everything. However, things aren't so easy when you have special powers.

    Director:Unknown
    Writer:Unknown

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  16. H2O: Just Add Water Season 2 Episode 6 - Pressure Cooker
    6.7/10(3 votes)

    #16 - Pressure Cooker

    S2:E6

    Cleo is worried when she sees her dad around with another woman. When she arrives at their house, she turns out to be Charlotte's mother! Meanwhile, Rikki and Emma attempt to save the Sertori's dinner with their powers.

    Director:Unknown
    Writer:Unknown

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  17. H2O: Just Add Water Season 2 Episode 7 - In Hot Water
    6.7/10(3 votes)

    #17 - In Hot Water

    S2:E7

    Everyone is shocked when Cleo is fired at the Ice Cream Stand, and even more so when Lewis takes her place! Rikki and Emma strike back at him but end up going too far

    Director:Unknown
    Writer:Unknown

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  18. H2O: Just Add Water Season 2 Episode 8 - Wrong Side of the Tracks
    6.7/10(3 votes)

    #18 - Wrong Side of the Tracks

    S2:E8

    Zane is curious by Rikki's reluctancy to reveal where she lives. So one day, he eventually convinces her to reveal her home: a trailer park with her grouchy father.

    Director:Unknown
    Writer:Unknown

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  19. H2O: Just Add Water Season 2 Episode 9 - Riding for a Fall
    6.7/10(3 votes)

    #19 - Riding for a Fall

    S2:E9

    Emma has to take Eliot for horse riding lessons and the competitive perfectionist tries to be better than the instructor. Meanwhile, Lewis double dates with Charlotte and Cleo.

    Director:Unknown
    Writer:Unknown

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  20. H2O: Just Add Water Season 2 Episode 10 - Missed the Boat
    6.7/10(3 votes)

    #20 - Missed the Boat

    S2:E10

    Cleo starts to struggle at school and gets help from the new tutor. But there are bigger problems when Charlotte starts to get closer to Mako Island with the help of Lewis.

    Director:Jeffrey Walker
    Writer:Unknown

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  21. H2O: Just Add Water Season 2 Episode 11 - In Over Our Heads
    6.7/10(3 votes)

    #21 - In Over Our Heads

    S2:E11

    In need of cash, Rikki decides to go and searching for a lost statue with a huge reward. But she lies to Emma and Cleo, which causes danger when Rikki is knocked out!

    Director:Unknown
    Writer:Unknown

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  22. H2O: Just Add Water Season 2 Episode 12 - Fish Fever
    6.7/10(3 votes)

    #22 - Fish Fever

    S2:E12

    Emma gets poisioned after cutting her finger on some coral and she begins to turn into a white scaled monster! Meanwhile Charlotte thinks Cleo is trying to break her and Lewis apart.

    Director:Unknown
    Writer:Unknown

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  23. H2O: Just Add Water Season 2 Episode 14 - Get Off My Tail
    6.7/10(3 votes)

    #23 - Get Off My Tail

    S2:E14

    Cleo decides to restart her friendship with Lewis and embrace her abilities, while Emma is shocked with the new supervisor who has big changes planned.

    Director:Unknown
    Writer:Unknown

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  24. H2O: Just Add Water Season 2 Episode 15 - Irresistable
    6.7/10(3 votes)

    #24 - Irresistable

    S2:E15

    Zane learns of the myth of Ambergris, a fragrance that can make mermaids fall for any man that wears it. When he buys it, Nate ends up wearing it and Emma, Cleo and Rikki all fall for him!

    Director:Unknown
    Writer:Unknown

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  25. H2O: Just Add Water Season 2 Episode 16 - Double Trouble
    6.7/10(3 votes)

    #25 - Double Trouble

    S2:E16

    Lewis is puzzled when he dreams about Cleo being photographed by people. Later, he and Cleo take Eliot and Kim to the marine park. Meanwhile, Emma thinks something is up between Ash and Rikki.

    Director:Unknown
    Writer:Unknown

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Best Episodes Summary

"Dr. Danger" is the best rated episode of "H2O: Just Add Water". It scored 7.5/10 based on 4 votes. Directed by Jeffrey Walker and written by Unknown, it aired on 12/22/2006. This episode scored 0.2 points higher than the second highest rated, "The Big Chill".