Pemetaan Kualitas Air Permukaan ( H2S, TSS dan Kesadahan ) dengan Metode Indeks Pencemaran di Sungai Aek Singolot Kabupaten Mandailing Natal

Abstract

Aek Singolot River located in Purba Baru, Mandailing Natal Regency is a flow from the meeting of the upstream river with Sorik Marapi hot water. Aek Singolot River is thought to be indicated by pollution due to the activities of residents living along the river which causes a decrease in river water quality. The purpose of this research is to analyze the quality of river water (H2S, TSS and Hardness), analyze the spatial distribution pattern of water quality with Geographic System Information (GIS) application and analyze the status of water quality. The method of determining river water quality used in this study is the pollution index method. Based on the calculation results with the pollution index method, the water quality status of Singolot River Aek still meets the quality standards. The result of the calculation of the IP value of point 1 is 0.165359, point 2 is 0.174559, point 3 is 0.143139 and point 4 is 0.422115.