The testing of Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) of river water in Cipager Cirebon

Abstract

This research was conducted to investigate the value of Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) in river water of Cipager, Cirebon. The object of the study was the water which taken from 6 spots from Cipager River. This research belongs to descriptive research with quantitative approach. Purposive sampling was used in this research. Based on the result of BOD and COD test the data showed that BOD at point 1 was 0.78 mg / l, point 2 was 0.38 mg / l, point 3 was 1.17 mg / l, point 4 was 0.13 mg / l, point 5 of 0.26 mg / l, and point 6 of 0.65 mg / l. In the other hand the COD results at point 1 was 118.8 mg / l, point 2 was 118.8 mg / l, point 3 was 138.6 mg / l, point 4 was 138.6 mg / l, point 5 was 118.8 mg / l, and point 6 is 138.6 mg / l. The result of BOD and COD test shows that T3 was the highest value of BOD with 1.17 mg and COD and 138.6 mg. After the data was analyzed using the pollution index values showed that the level of pollution in the water of Cipager River for class IV water quality criteria was categorized as mild contamination.