Episodes
78
3 seasons
78 episodes · 3 seasons · 31.2 hours to binge
78
3 seasons
31.2 h
1d 7h
1 days
non-stop
7.8/10
690 votes
H2O: Just Add Water runs to 78 episodes across 3 seasons, at roughly 24 minutes each. Watching every episode back to back is 31.2 hours of pure run time — that's 1 days and 7 hours without a single break.
More realistically, at two episodes a night you'll finish in about 39 days. That's 3.9 full 8-hour work days of screen time. Use the planner below to pick your own pace and get an exact finish date.
31.2 h
Pure run time
39 days
At 2 episodes/day
24 min
Per episode
Day 39: 100% done (78 of 78 episodes)
26.0
on average
10.4 h
on average
1,872
1 days non-stop
At 31.2 hours, H2O: Just Add Water is longer than 59% of every series tracked here — making it a solid commitment. Within the Drama genre the average is 48.5 hours, so H2O: Just Add Water sits below that.
H2O: Just Add Water is very well rated at 7.8/10 from 690 votes. With 31.2 hours of total run time it's a few weeks of viewing — plan accordingly before you press play.
All 78 episodes of H2O: Just Add Water add up to 31.2 hours of pure run time — that's 1 days and 7 hours non-stop.
H2O: Just Add Water has 78 episodes across 3 seasons, averaging about 24 minutes per episode.
At 1 episode a day it takes 78 days, at 2 episodes a day 39 days, and at a marathon pace of 8 a day just 10 days.
H2O: Just Add Water is rated 7.8/10 from 690 votes. Budget 31.2 hours if you want to watch the whole thing.
Episodes, seasons, runtime (24 min/episode) and rating come directly from TMDB (as of 2/12/2026).
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