Another solution to the water scarcity crisis is to improve our attempts to recharge our groundwater. Artificial groundwater recharging has been in existence for decades and has proven to be one of the most successful methods of solving water scarcity in many areas. The process of recharge can either be a human-induced process or a natural process as part of the hydrological cycle. Groundwater recharge can be done directly via injection wells or spreading basins or as a result of human activities including waste disposal and irrigation. Reclaimed wastewater and human-induced recharge are gaining grounds in many regions, gradually making it a key component of the hydrological cycle.

Aquifer recovery and storage is another water scarcity solution. Here, recharge is done via surface infiltration into unconfined, shallow aquifers. In recent years, this process has evolved to accommodate direct injection into deeper aquifer systems, including those containing poor quality groundwater, making freshwater storage available in areas where none formerly existed. A major constraint to recharging by injection and infiltration is the clogging of pores from particulates, chemical precipitation, and biofilm formation. This can have adverse effects on the quality of groundwater such as the formation of dissolved sulfides and iron solubilization (EPA, 2017). That notwithstanding, if done and controlled properly, these two methods can greatly reduce the level of water scarcity in some areas stricken by this phenomenon.