WATER POLLUTION AND SEDIMENT INDEX OF THE CIMANUK RIVER BEFORE DEVELOPMENT OF RAW WATER INTAKE OF DRINKING WATER

E Wardhani^[1]*, M R Pratama¹

¹ Environmental Engineering Study Program, Faculty of Civil Engineering and Planning, National Institute of Technology, Bandung, Indonesia

[1]^* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art18

ABSTRACT

Cimanuk River water is the main raw water source in West Java Province. The quality of the water must be maintained so that it can be useful in the long term. Cimanuk River water is planned to be a source of raw water for clean water services in the West Java Region. Based on this, it is necessary to know the quality of this river water. This study aims to calculate the water and sediment pollution index considering that there is a strong relationship between the water column and sediment in the river. The research method uses the Pollution Index method to determine the water pollution index and the Contamination Factor and Metal Pollution Index to assess the quality of sediment due to heavy metal pollution. . There are 6 (six) parameters that do not meet the quality standards, namely: BOD₅, COD, Total Ammonia (NH₃-N), Sulfur as H₂S, Free Chlorine (Cl₂), and Copper (Cu). Sources of pollution are predicted to come from domestic and agricultural activities in the Cimanuk river basin. The results of the analysis of sediment quality using the Contamination Factor method showed that the sediment of the Cimanuk River was polluted with heavy metals Cadmium and Copper with a very high category. Based on the results of calculations using the Metal Pollution Index method, it was concluded that the sediment of the Cimanuk River was polluted with heavy metals.

Keywords: Cimanjuk, River, Sediment, Water, Quality

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