Angraini, Riyani2021-10-212021-10-212021-04wahyu sari yenihttps://repository.unri.ac.id/handle/123456789/10298Composite is a material composed of two or more materials with different phases, namely a matrix and filler. The composite used in this research of natural rubber latex as a matrix, activated charcoal from mahoganiy fruit skin, cast sand and palm fiber as a filler. Compiste is made by varying the filler material : 100% activated charcoal (KA), 100% cast sand (KP), 100% palm fibber (KI), 50% charcoal : 50% cast sand (KAP), 50% charcoal : 50% palm fiber (KAI), 50% cast sand : 50% palm fiber (KPI) and 33,3% charcoal : 33,3% sand : 33,3% palm fiber (KAPI). Composite was applied to filter Kampar Kiri River Water in Teratak Buluh Village. The results showed that analysis of color, pH, TDS dan TSS parameters after filtering using composite, show that activated charcoal composite (KA) can reduce color intensity by 94,28%, TDS 99,81%, TSS92,13% and can increase pH from 6,1 to be 6,7.enactivated charcoalcompositefiltrationArticle