Artificial groundwater recharge is a way to refill underground water sources with surface water to prevent loss. It can also help protect coastal aquifers, improve water quality, and prevent land subsidence. There are three main methods: spreading basins, injection wells, and recharge shafts/pits. The method chosen depends on factors like available land and economic constraints. Concerns have been raised about the quality of water used for recharge, especially reclaimed wastewater. This has led to changes in water laws regarding ownership rights and liability.