Water Quality Characteristic of Ciliwung River at Bogor Botanical Garden Segmen, Bogor

Abstract

The Ciliwung River is one of the heavily polluted rivers in Indonesia. This is caused by the input of high population and industrial pollution loads along the river, from upstream in the recreation area and Puncak in Bogor Regency to through Bogor City, Depok City and downstream in the Jakarta metropolitan city. This condition is worsened by the decreasing vegetated land in the Ciliwung watershed, especially in the river border which is polluted by the increasing population and the development of various industries, which generally do not have sewage treatment units, so that the Ciliwung river is declared heavily polluted. Bogor Botanical Gardens (BBG) is one of the green open spaces that acts as a buffer for the Ciliwung River in the BBG section. This study aims to analyze changes in the water quality of the Ciliwung river along the BBG. The research was conducted by analyzing air quality based on physicochemical factors (temperature, turbidity, total solids, pH, DO, BOD, COD) and benthic community structure at BBG inlet, middle BBG, and BBG outlet. The physico-chemical parameters of the Ciliwung river in the BBG segment still meet the requirements of class II water quality standards except for COD. The macrozoobenthos community structure is dominated by the orders Ephemeroptera and Trichoptera. Air quality analysis using the Water Quality Index, Pollution Index, Shannon-Wiener Diversity Index and the Hilsenhoff Biotic Index showed an increase in air quality from BBG inlet, middle BBG to BBG outlet.