Measuring pH Near the Warren Wastewater

The purpose of our experimentation was to determine if there was a difference between the pH of the raw sewage that enters the Warren Wastewater Treatment Plant at the Red Run Drain and the pH of the water that exits the plant. We ran our trials by collecting samples of raw sewage water and samples of the chlorinated final effluent leaving the plant. We took the pH of these samples on 10 randomized days over a period of three weeks. After we had recorded these values, we analyzed our data. Because our data was skewed, we were unable to perform a Two-Sample T test, and thus were only able to do descriptive analysis. By doing this, we determined that the median pH value of the raw sewage water was higher than the median of the chlorinated final effluent. There is only a slight overlap between our two data sets, and there is a difference between the medians. Because of these reasons, we determined that our two data sets are likely from different populations.

Research Done By:

Chrissy McCoy
Sterling Height

Sarah McCracken
Warren Mott