This is a base project for GUTS clubs Fall 2014. It creates agents who wiggle around the world, and create waste water agents when they encounter a white patch. The waste water agents are counted by a data box. The waste water agents form a pond in the lower left corner.
Extensions could be to introduce algae to treat the waste water, to create a graph, to give turtle agents a trait to create less waste water (low flow faucets), or to begin with an existing pond of fresh water that is used by the people and turned into waste water, which could be treated.