This is a really polished product! The art is fantastic, the music is relaxing, and the theme is integrated quite well into the core mechanics of the game. I enjoyed it enough to do multiple runs of the game. The first run didn't go super well, because I didn't really internalize that the lumber mills needed to be at the same height as the trees to harvest resources, but once I realized that it went pretty smoothly.
The only minor suggestion I would make is that it might be cool to have a UI element on screen at all times that tells you the amount of food, water, dirty water, and wheat you've collected. I thought it was just a bit difficult to determine when I had hit a good production rate of resources and found myself constantly mousing over the town hall to check.
Amazing work!