WATER QUALITY INDEX DETERMINATION USING OVERALL INDEX OF POLLUTION (OIP) METHOD, SAID-WQI METHOD, AND POLLUTION INDEX (IP) METHOD

• Main Author: Aulia Rahmi, Nurul
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/77716
• Institution: Institut Teknologi Bandung

One of the rivers that is of concern in Indonesia today is the Citarum River. The quality status of the Citarum River has a value that changes every year. In various other countries, several methods of measuring water quality have been developed, or also called the Water Quality Index (WQI). However, among the methods that have been developed, there are differences in the results of the water quality status obtained with water quality data in the same water body. Therefore, a study was conducted on a comparison of the water quality index of the Citarum River based on the results of calculating the water quality index using the Overall Index of Pollution (OIP) method, the WQI method developed by Said (Said WQI), and the pollution index (IP) method which represents the method of calculating the water quality index. in Indonesia. This research was conducted using two types of data, namely secondary data and primary data obtained from the Citarum River water sampling results. Data processing was carried out using Microsoft Excel, QGIS software which assisted in determining rainfall, and SPSS software to assist in statistical tests. Several parameters whose overall average values were below the quality standard included Biochemical Oxygen Demand (BOD), Dissolved Oxygen (DO), fecal coliform, and total coliform. The Citarum River received 'Good', 'Medium' and 'Poor' status for the Overall Index of Pollution (OIP) method and the Said-WQI method. Meanwhile, for the pollution index (IP) method, the statuses were 'Lightly Polluted', 'Moderately Polluted' and 'Severely Polluted'.