Geogenic contaminant mobilization illustration

Managed aquifer-recharge methods and processes. Managed recharge—which uses water of dissimilar geochemistry from groundwater through infiltration into shallow aquifers or injection into deep aquifers—can alter hydrologic and geochemical aquifer conditions such that arsenic and other geogenic contaminants are mobilized from sediment to aqueous phase. Modified by Amanda Carr, U.S. Geological Survey, from Fakhreddine and others (2021) graphical abstract.

Figure 17 from Status of Water-Quality Conditions in the United States, 2010–20 (https://doi.org/10.3133/pp1894C)