THE CONTENT OF HEAVY METALS (CD, PB, AND CR) IN WATER AND SEDIMENT IN THE MESUJI RIVER, LAMPUNG, INDONESIA

Mesuji River is a natural resource that provides water for human life. Mesuji River quality standards based on Government Regulation No. 22 of 2021 with class II water quality standards. River quality can be seen from the physical, chemical and biological parameters of the river. Pollutants that have the potential to be found in river waters are heavy metals. Based on the relatively highwater utilization of the Mesuji River, a study was conducted on the contamination of heavy metals Cd, Pb, and Cr so as to provide appropriate control measures and sustainable river management. The research was conducted in 2 time periods, namely the rainy season and the dry season and water and sediment samples were taken at 7 sample station points. Pollution of metals Cd, Pb and Cr in water and sediments in the Mesuji River as a whole still meets quality standards. The correlation between Cd content in water and Cd in sediment with a negative correlation value of -0.217 (weak correlation) while the correlation values of Pb and Cr in water and sediment each have a very strong correlation value with correlation values of 0.801 and 0.822.