Pollutant Index Method in Determining the Water Quality Status of the Cimahi River in West Bandung Regency

Abstract

Cimahi River is one of the sub-watersheds of the Citarum River. The upstream of the Cimahi River is located in the West Bandung Regency area through 7 villages namely Karyawangi, Cihanjuang, Cihanjuang Rahayu, Sukajaya, Padaasih, Jambudipa, and Kertawangi. The research was carried out at 3 points, namely monitoring point 1 at coordinates E 107°34‘41.01” S 06°47‘51.29”, point 2 at coordinates E 107°34‘24.36” S 06°48‘54.09”, and point 3 at coordinates E 107°33‘58.28” S06°50’ 05.33”. The purpose of this study is to determine the status of the water quality of the Cimahi River so that the level of water pollution that occurs can be known. The method used to calculate the status of water quality is the Pollutant Index which refers to the Decree of the State Minister of the Environment Number 115 of 2003 concerning Guidelines for the Status of Water Quality. Based on the research results, there are 6 main parameters that cause water pollution, namely TSS, BOD5, COD, Nitrite, Free Chlorine, and Total Detergent. The Pollutant Index results obtained in the Upper Cimahi River are categorized as heavily polluted with a significant increase from point 1 to 3, respectively 13.38 at point 1, 14.99 at point 2, and 15.36 at point 3. Source potential pollutants in this river are the domestic sector, agriculture, and livestock.

Assessment of Heavy Metal Pollution Status in the Middle Sector of the Citarum River

“…This study is focused on sediment from the Citarum River-Purwakarta segment, the middle sector of the Citarum catchment area [8]. It was assumed that this area received more heavy metal from human activity at the upstream area.…”

Determining the Status of the Setiamanah Reservoirecosystem in Cimahi City of West Java Province

“…Population growth increases the need for clean water. Cimahi City's raw water is experiencing a decline in quality and quantity, especially from river water [1]. The quality of river water in Cimahi City is heavily polluted due to domestic and agricultural activities [1].…”

“…Cimahi City's raw water is experiencing a decline in quality and quantity, especially from river water [1]. The quality of river water in Cimahi City is heavily polluted due to domestic and agricultural activities [1]. While the quantity of river water in Cimahi City decreases during the dry season, during the rainy season, it can cause flooding in several areas due to a lack of water absorption and changes in land use.…”