The chapter discusses the artificial recharge of groundwater, which involves placing surface water in basins, furrows, ditches, or other facilities to infiltrate into the soil and recharge aquifers. This method is increasingly used for short- and long-term underground storage and water reuse. The design of such systems requires permeable surface soils, and if these are not available, trenches or shafts in the unsaturated zone can be used, or water can be directly injected into aquifers through wells. Key considerations include determining infiltration rates, ensuring adequate permeability in the unsaturated zone, and avoiding excessive groundwater mounding. Water quality issues, such as clogging layers and geochemical reactions, must also be evaluated and managed through pretreatment and regular maintenance. The chapter emphasizes the importance of field investigations and test basins to predict system performance and manage clogging effects.The chapter discusses the artificial recharge of groundwater, which involves placing surface water in basins, furrows, ditches, or other facilities to infiltrate into the soil and recharge aquifers. This method is increasingly used for short- and long-term underground storage and water reuse. The design of such systems requires permeable surface soils, and if these are not available, trenches or shafts in the unsaturated zone can be used, or water can be directly injected into aquifers through wells. Key considerations include determining infiltration rates, ensuring adequate permeability in the unsaturated zone, and avoiding excessive groundwater mounding. Water quality issues, such as clogging layers and geochemical reactions, must also be evaluated and managed through pretreatment and regular maintenance. The chapter emphasizes the importance of field investigations and test basins to predict system performance and manage clogging effects.