That was a really clever use of water as a resource! Especially how you could regain the water you lost. I wish you could jump/boost for longer as long as you had the water, and that there were more levels to play.
There's a little bug on the very first screen where running out of water forces you to restart the browser. It seems like if you run over a water particle that would normally replenish you, after you run out and lose, it breaks the game. Maybe a variable overflow?