This experiment's purpose was to see how materials commonly used in modern construction affect the quality of water they come into contact with (runoff). The materials that have been tested are concrete, asphalt roofing shingles, clay bricks, and vinyl siding.

First, the totes used were rinsed to wash away any debris. Next, they were each filled with 3.79 liters of filtered water, and this water was tested for pollutants. The building materials were then placed into the totes which were subsequently closed. Each tote's water was tested for pollutants every 24 hours for a week. Every material was represented by 2 totes.

The asphalt roof shingle had the most impact on water quality, followed by the clay brick, vinyl siding, and concrete brick (based on the number and amount of substance increases). The asphalt roofing exhibited increases in 10 pollutants, and the others all exhibited increases in 9. In addition, the roof shingle had the most highest increases and the concrete brick had the most lowest increases, with others in between. The hypothesis was partially proven; the first two materials' predictions were determined to be correct but the last two materials' predictions were interchanged by their rank of impact.