In this paper, we confronted the issue of excessive usage of bathing water from a computational point. We designed a model based on the Newton’s Law of Heating and Cooling, the laws of thermodynamics, and the concept of heat transfers between physical systems. To explain our model, we used iPython computational tools to illustrate the results, weaknesses and strengths of our model. Our initial approach assumed that the heat propagated throughout the water instantaneously. To combat this, we used a cellular automaton to model the heat distribution throughout the bathtub.