Which test is not run on raw wastewater?

The fecal coliform test is typically not run on raw wastewater because it specifically assesses the presence of coliform bacteria, which are indicators of fecal contamination and the potential presence of pathogens. This test is more commonly performed on treated effluent, drinking water, or water bodies to determine the effectiveness of treatment processes and assess public health risks. In contrast, the other tests—BOD (Biochemical Oxygen Demand), suspended solids, and pH—are standard analyses for raw wastewater. BOD measures the organic matter present, suspended solids assess the particulate matter, and pH indicates the acidity or alkalinity of the wastewater, all of which are crucial for understanding the characteristics of raw wastewater and designing appropriate treatment processes.