Biology+Conclusion

The result of this experiment doesn't support the hypothesis because the expectation was that the chemicals in the swimming pool water will kill //Staphylococcus epidermidis// cells but that is not what had happened. There are actually much more bacteria in the gram stain result of the "pool water plus human bacteria" agar plate then the "pool water" agar plate. From this result, we can conclude that the chlorinating agents in the swimming pools are not strong enough to kill most of the //Staphylococcus epidermidis//. This result is optimistic because //Staphylococcus epidermidis// occupies the surface of human skin and thus decreased the chance for other bacteria to invade human bodies. However, there is an issue on this result; our result suggests that the chlorinating agents might have allowed noxious bacteria to survive in the swimming pools water too.

__Some of the problems occurred on the way:__ - The time between chlorinating agents been put into the swimming pool and the collection of swimming pool water is not controlled. - The timing of collecting pool water can possibly effect the result of the experiment, because the water might contain more bacteria at the end of the day and more chlorinating agents early in the morning. - There might be different types and amount of chemicals used in different pools. And so, the results will not be accurate and cannot be applied to all the swimming pools out there.