ANALYSIS OF WATER QUALITY AND POTENTIAL ECOLOGICAL RISK BASED ON HEAVY METAL CONTENT (CR, CU, PB, AND ZN) IN CIKIJING RIVER, RANCAEKEK DISTRICT, WEST JAVA

• Main Author: Wijaya, M.
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/69230
• Institution: Institut Teknologi Bandung

The Cikijing River is one of the rivers of the Citarik River Basin which empties into the Citarum River and crosses Bandung Regency and Sumedang Regency. One of the uses of the Cikijing River is as a source of irrigation for rice fields in the Rancaekek area, but the current condition of the water quality of the Cikijing river has decreased, mainly due to the disposal of wastewater from the Rancaekek industrial area which is dominated by industry in the textile and textile products sector. This study aims to determine the potential ecological risks and water quality of the Cikijing River based on the content of heavy metals (Cr, Cu, Pb, and Zn). The sampling method used was purposive sampling which was carried out once in the rainy season and once in the dry season at ten monitoring points. Based on the results of this study, it was found that the water quality of the Cikijing River was classified as good based on the content of heavy metals (Cr, Cu, Pb, and Zn) with a Pollution Index value below 1 (one), while for the sediment compartment of the Cikijing River, according to the geoaccumulation index, taking into account the effect of variations in the earth's layer (lithosphere) were categorized as unpolluted for heavy metals Cr, Cu, and Pb (Igeo < 0), heavily polluted to very heavy for heavy metals Zn (4 < Igeo < 5). The Pollution Load Index is useful for determining the pollution status of several heavy metal contaminants in the sediment and it is found that the Cikijing River is classified as polluted by several heavy metals (PLI > 1). Furthermore, the results of the analysis using the Potential Ecological Risk Index concluded that the Cikijing River has a mild ecological risk potential (PERI <150). The results of the correlation test concluded that there was a strong and significant relationship between the concentrations of heavy metals Pb and Zn with Total Dissolved Solids, salinity, and electrical conductivity in the water compartment. While in the sediment compartment there is a strong and significant relationship between sediment texture and heavy metal Cr.