Chlorine concentrations at Oklahoma State University

Abstract

Safe levels of disinfectants, such as chlorine, are maintained in drinking water by water treatment plants, ensuring the water meets quality standards when it leaves the facility. However, there is no monitoring or regulation of disinfectant levels at the point of use, such as taps or water fountains. Oklahoma State University (OSU) operates its own water treatment plant, but given the campus's historic nature, with buildings spanning various ages, there may be factors that influence chlorine concentrations after the water leaves the treatment plant. Our research investigates how building age, seasonal usage, and distance from the treatment plant impact chlorine levels in drinking water across campus. For this study, we have selected 35 campus buildings, including residential halls, academic facilities, and recreational centers. These buildings range in age from the historic Old Central, built in 1894, to the newly constructed Ag Hall, completed in 2024. The buildings are located across a wide geographic area, from Bennett Hall in the north to Kamm Hall in the west, the McKnight Center in the south, and the Seretean Center in the east. Chlorine concentrations will be measured using a Hach Total Chlorine Colorimeter, with testing performed consistently on the first floor of each building at the same location each time. After data collection, we will generate a Geographic Information System (GIS) model to identify areas with the highest chlorine concentrations. This model will help assess whether building age, distance from the treatment plant, or seasonal water use patterns affect chlorine levels on campus. The results will provide valuable insights for treatment plants and help identify areas where infrastructure improvements may be needed. By using this model, we can ensure that drinking water meets safety standards at all points on campus, even during periods of varying seasonal demand.Lew Wentz FoundationBiosystems and Agricultural Engineerin