The improvement of Cipunagara River quality (BOD parameter) based on pollution load analysis of domestic, agriculture, farming and industrial activities

Abstract

In many regions in Indonesia, rivers play a very important role to support the life activities of the communities. One of the rivers in West Java – Indonesia is Cipunagara River, which supports the biggest catchment in Subang Regency, West Java. Past research has shown that growing activities in the catchment area of the river has caused the quality deterioration of Cipunagara River. The importance of the river is multiplied because the river will also be used as the source of water for Sadawarna and Cilame Reservoirs. This paper aims at analyzing the pollution load on Cipunagara River, for the water quality parameter of BOD, from various activities. The analysis was undertaken by selecting the most important segment of the river using several criteria. Once the segment was selected, both existing and projected pollution loads were calculated based on the guidance from the Ministry of Environment and Forestry of Indonesia. Results show that total pollution loads of BOD from livestock, domestic, agriculture and industrial sectors exceed the maximum pollution level in Cipunagara River. The calculated pollution load for BOD parameter is: 6,391.21 kg/d with the maximum pollution load (based on PP 82/2001 Kelas 1) is 2,355.26 kg/d. These results were then used as the inputs in the BOD Model simulations to analyze possible strategies in improving the quality of Cipunagara River.