Water quality status based on Pollution Index and Water Quality Index of Ciliwung River, DKI Jakarta Province

Abstract

The Ciliwung River receives loads from various sources of pollution along the border, both from agricultural waste, industrial waste, and domestic waste. The various wastes that enter the river cause a decrease in water quality. This study aims to determine the water quality status of the Ciliwung River in the Jakarta segment based on the Pollution Index (PI) and the Pesce-Wunderlin Water Quality Index (WQI). Monitoring on Ciliwung River water quality in the Jakarta segment was carried out in February-September 2021 at 18 observation stations. Most of the parameter tested for the water quality of the Ciliwung River in Jakarta does not meet the river water quality standards of class II based on Attachment VI of Government Regulation of the Republic of Indonesia Number 22 of 2021, such as total suspended solid, total dissolved solid, dissolved oxygen, ammonia, nitrite, total nitrogen, biochemical oxygen demand, chemical oxygen demand, total coliforms, and fecal coliforms. The water quality status of the Ciliwung River in the Jakarta segment is in medium to bad condition based on the Pesce-Wunderlin Water Quality Index and classified as moderately to extremely polluted based on the Pollution Index.