71 / 2016-04-30 21:52:28

SPATIAL IDENTIFICATION OF POINT AND NON-POINT SOURCES POLLUTION IN ALUR ILMU STORMWATER CHANNEL, UKM BANGI, MALAYSIA

spatial identification,point source,non-point source,2275,stormwater

Rapid urban development and human activities have caused adverse impacts on the environment. Alur Ilmu is a 1.73 km of stormwater channel built in the center of UKM Bangi Campus, Malaysia. The stormwater channel is vulnerable and susceptible to water pollutions from upstream and surrounding. Hence, it must be managed to maintain a healthy ecosystem. Traditional practices of stormwater management are inadequate to address surface runoff, soil erosion and domestic waste discharged from point and non-point sources. The present paper aims to identify point and non-point sources pollution in Alur Ilmu by analyzing spatial distribution of water quality parameters. There are thirteen stations have been selected in this study to identify point and non-point sources based on turbidity, phosphate, nitrate, iron, aluminum and oil & grease. A spatial interpolation has been conducted through a Kringing model on the water quality parameters to indentify point and non-point sources. From the analysis, phosphate, nitrate and oil and grease were detected exceeding Interim National Water Quality Standards for Malaysia (INWQS) acceptable level during dry season; turbidity and heavy metals were detected exceeding acceptable level during wet season. The results produced can be served as a decision making tool for policy maker to device effective policy guidelines in managing stormwater in the campus.