This is cool puzzle game! I enjoyed the water manipulation quite a bit. I did have a LOT of trouble on one screen, but thankfully someone in the comments had figured it out. All the other puzzles were intuitive enough that I could figure them out on my own.
I love the intro story and ending art! The level sprites look good and all work well enough. The platforming is functional, though can get a little frustrating jumping out of the water on bricks sometimes, especially in tight spaces.
I would have liked a little more story/explanation of what was happening in game.. even though the intro was cool, it didn't really tell me what was happening.
A little more polish in general would really kick this up a notch! I really liked the core concept, I'd love to see animated water, the people doing a bit more, more story, tighter controls.
Overall, this is a good game with a great concept. I hope you keep working on it!