The hypothesis is that the water from a water cooler will contain more bacteria than tap water.

You will prepare two petri dishes, label them, and dampen two sterilized swabs with water from the water cooler and tap water. Then, you will rub the swabs across the agar in the petri dishes and close the covers. Finally, you will measure the size of the bacteria growth in the petri dishes for the next five days.

You will need two agar petri dishes, two disinfected swabs, one bottle of disinfected water, tap water, one water dispenser and water cooler, and one marker pen.

The results showed that tap water had smaller amounts of bacteria compared to water from the water cooler. The hypothesis was proven correct - the water from a water cooler does contain more bacteria than tap water.

This science project is interesting because it shows how bacteria can grow quickly in places with high levels of moisture, and how chlorine is added to tap water to kill bacteria and prevent water-borne diseases.

Variations of this science project could include repeating the experiment with water from different sources such as a water fountain or well, or repeating the experiment using water samples from different types of water filters.

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!