Study of the Decreasing of Fe Content in Well Water Using Active Palm Shell Charcoal Adsorbent with Partial Oxidation Method Before and After Chemical Activation Using H3PO4

—The community in Batuah (Samarinda) is currently experiencing population growth and in line with the increasing need for water which requires even more water, one of the water sources that can support many of the needs of the community at this time is by using water sources from dug wells. Therefore, it is necessary to study the reduction of Fe levels before use. One of the raw materials that can be used to reduce Fe levels is activated charcoal from palm shells (Elaeis guineensis). The aims of this research are: This research is expected to have the benefit of knowing whether the Palm Shells can reduce Fe levels in dug wells by the adsorption method based on PERMENKES NO. 32 of 2017 for Fe content. The treatment carried out in this study was to provide contact time with well water with variations of contact time of 30, 60, 90, 120, and 150 minutes. The best results obtained were the Palm Shell Activated Carbon (PSAC) treatment at 90 minutes contact time variation of 0.1343 ppm.