Deep well injection ultimately stores liquid wastes in the subsurface geologic formations of the earth (Kepke, n.d.). The selection of suitable well sites involves a complex and detailed process (Van der Merwe et al, 2009). To obtain permission for deep well injection in South Africa is unlikely due to the risk of groundwater contamination (Dama-fakir, n.d.).
Other disadvantages of include high costs regarding the conditioning of the brine to prevent well clogging. The possibility of corrosive brines is also a concern because it could cause seismic activity that could damage the well and cause groundwater contamination (Van der Merwe et al, 2009).
