Before starting a project, it is key to boil down the requirements: exactly what is the point, or goal of the project. Here are the requirements for this project:

1. Determine the common municipal water contaminants that consumers are worried about.
2. List methods for filtering each contaminant.
3. Identify filter media types and life cycles.
4. Identify system flows that can increase life of media.
5. Design filter housings.
6. Design filter system flow for my specific need.
7. Identify control methods and implimentation.