H2O: Just Add Water Episode Ratings Heatmap
2006 · 3 Seasons · 78 Episodes · Overall Score: 6.6/10 (26 rated)
Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 0.95), maintaining an average of 6.6.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 |
|---|---|---|---|
| Ep 1 | 6.9 | – | – |
| Ep 2 | 6.0 | – | – |
| Ep 3 | 6.2 | – | – |
| Ep 4 | 5.8 | – | – |
| Ep 5 | 6.0 | – | – |
| Ep 6 | 5.8 | – | – |
| Ep 7 | 5.8 | – | – |
| Ep 8 | 5.8 | – | – |
| Ep 9 | 5.4 | – | – |
| Ep 10 | 6.0 | – | – |
| Ep 11 | 5.8 | – | – |
| Ep 12 | 6.0 | – | – |
| Ep 13 | 6.4 | – | – |
| Ep 14 | 5.7 | – | – |
| Ep 15 | 7.7 | – | – |
| Ep 16 | 7.7 | – | – |
| Ep 17 | 7.7 | – | – |
| Ep 18 | 7.7 | – | – |
| Ep 19 | 4.7 | – | – |
| Ep 20 | 6.5 | – | – |
| Ep 21 | 7.7 | – | – |
| Ep 22 | 6.5 | – | – |
| Ep 23 | 7.7 | – | – |
| Ep 24 | 7.7 | – | – |
| Ep 25 | 8.0 | – | – |
| Ep 26 | 7.7 | – | – |
| Season Avg | 6.6 | – | – |
Ratings Analysis & Trajectory
Across 3 seasons and 78 episodes, H2O: Just Add Water has earned an overall series rating of 6.6 out of 10. The series displays remarkable consistency across its narrative arc, maintaining reliable ratings from premiere to conclusion.
The single highest-rated hour of television in the series is Season 1, Episode 25 ("Dr. Danger"), rated at an extraordinary 8.0/10 with 3 ratings. Conversely, the lowest-rated installment is Season 1, Episode 19 ("Hurricane Angela"), landing at 4.7/10.
The most precipitous single-episode shift occurred in Season 1 between Episode 18 ("Bad Moon Rising", 7.7) and Episode 19 ("Hurricane Angela", 4.7), a swing of 3 points.
Top 10 Highest Rated Episodes of H2O: Just Add Water
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 25 | Dr. Danger | 8.0 | 3 | Dec 22, 2006 |
| #2 | Season 1, Ep 15 | The Big Chill | 7.7 | 3 | Oct 13, 2006 |
| #3 | Season 1, Ep 16 | Lovesick | 7.7 | 3 | Oct 20, 2006 |
| #4 | Season 1, Ep 17 | Under the Weather | 7.7 | 3 | Oct 27, 2006 |
| #5 | Season 1, Ep 18 | Bad Moon Rising | 7.7 | 3 | Nov 3, 2006 |
| #6 | Season 1, Ep 21 | Red Herring | 7.7 | 3 | Nov 24, 2006 |
| #7 | Season 1, Ep 23 | In Too Deep | 7.7 | 3 | Dec 8, 2006 |
| #8 | Season 1, Ep 24 | Love Potion #9 | 7.7 | 3 | Dec 15, 2006 |
| #9 | Season 1, Ep 26 | A Twist in the Tail | 7.7 | 3 | Dec 29, 2006 |
| #10 | Season 1, Ep 1 | Metamorphosis | 6.9 | 15 | Jul 7, 2006 |