T The research area is in the Tajur Village area and its surroundings, Citeureup District, Bogor Regency. This research aims to determine the distribution of infiltration rate values, the distribution of groundwater level depth, and what parameters can influence the infiltration rate, as well as determine the clay minerals present in the research area. The methods used include measuring soil infiltration using an infiltrometer, measuring groundwater levels, taking soil samples for XRD analysis testing to determine the clay minerals contained in the soil, testing soil permeability and soil water content. From the results of the research and tests that have been carried out, it was found that the lithology distribution of the research area is in the form of mudstone units and limestone units. Then it is known that the infiltration rate value is divided into 2 zones, namely, slow-medium infiltration rate (0.5 – 2 cm/hour) and medium infiltration rate (2 – 6.5 cm/hour). The results of testing soil samples for soil permeability showed moderate permeability values (2.0 – 6.25 cm/hour) and rather fast (6.25-12.5 cm/hour). Furthermore, analysis of groundwater content was 3.19% to 5.64%. Then, by analyzing the clay minerals using XRD, there were clay minerals in the soil in the form of vermiculite, nontronite, heulandite, kaolinite, nacrite, palygorskite, mica, illite, and saponite. From these results, several clay minerals have characteristics that have the potential for swelling, this has an influence on soil permeability related to the properties of the clay minerals which then has an influence on the infiltration rate.