Ironically this is a concept I also came up with for VimJam 3! However I wasn't sure on how I would implement certain aspects so I went another route.
Excellent job on the art and music as well as the overall level design and tutorial aspects.
I would say with a game like this where you respawn to the start of the level, the repeated pop up of what to do can be a bit annoying, so a way for that not to automatically appear would be great! Also found that you can get stuck when you run out of water but haven't given any to the people so you can't finish but you also can't kill yourself on the fire because you've put it out.
Overall though, a great concept with excellent art and music. Good Job!