SUMMARY Coconut shell (Cocos nucifera L.) is one of the materials that can be used as a good raw material for making charcoal. Charcoal can be used as an adsorbent for metals, non-metals, and organic compounds. In this study, the potential of coconut shell charcoal was seen from its ability to adsorb E.coli (Escherichia coli). This study aims to determine the optimum carbonization temperature …