DEVELOPMENT OF WATER QUALITY INDEX CALCULATION METHOD IN RIVER WATER QUALITY ASSESSMENT (CASE STUDY: UPSTREAM CITARUM RIVER, WEST JAVA PROVINCE)

• Main Author: Afifa, Rahma
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/84192
• Institution: Institut Teknologi Bandung

The water quality index (WQI) is a tool for determining air quality status which is needed in monitoring and managing air resources. WQI is expected to be able to provide a true representation of river quality to the public and decision makers. The Upper Citarum watershed, which is one of the largest streams in West Java Province, is one of the water bodies that is closely related to the activities of the surrounding community. Therefore, an appropriate air quality index is needed to describe the air quality in the Hulu Citarum watershed. The main objective of this research is to validate the method for developing an air quality index so that it is suitable for the Upper Citarum watershed. The data used includes primary data obtained from interviews and questionnaires with panelists in the air sector which was carried out in two stages as well as secondary data originating from the West Java DLH as well as previous research regarding the comparison of the air quality index for the Upper Citarum watershed. Analysis carried out on the results of interviews and questionnaires found that there were 9 parameters and their weights that represented 4 categories of decline for the Upper Citarum watershed, namely TSS (0.07), color (0.038), and pH (0.059) which represented physical characteristic categories; BOD (0.139), COD (0.094), and DO (0.088) which represent a decrease in oxygen and organic levels; Nitrate (0.096) and Total Phosphate (0.105) which represent eutrophication; as well as fecal coli (0.313) which represent health hazards. This gives the impression that the selection parameters through the development method are in accordance with several air quality indices that apply in Indonesia.