Classification Based Water Quality Index (WQI) in UTM River

Water is important for drinking, bathing, washing, cooling, and protecting to continue surviving. Rapid development in human activities causes several of water issues and problems especially in river pollution. Water pollution occurs in Sekudai River through UTM River. Therefore, this research study is conducted to determine factors contribution to UTM River pollution through classification based Water Quality Index (WQI). Sampling area is concentrate along UTM River with setting of seven (7) stations in upstream, middle stream, and downstream river. Analysis showed majority parameters for DO, BOD, COD, NH3-N, SS, and pH are in class three and only minority is in class two or one, which result in calculation for WQI is class three in station 1 to station 7. UTM River proved water quality is in slightly polluted condition due to human activities which cause contamination through concrete waste, chemical waste, garbage and washing wastewater, restaurants, chain stores, gas stations, and so on. Continuous human activities will cause UTM River to be totally polluted and causing dead river, which will reduce human quality life and destruct environment. Therefore, human should be controlled, reduced, responsible, and ethically to protect the environment from missing forever.