The well shown in this figure has become "contaminated" with naturally occurring salt water,drawn toward it because too much water was pumped from it for too long.What would be an easy way to restore the aquifer,that is,to push the saline groundwater back toward the ocean?
A) Cover the near-shore sea bottom with heavy plastic and concrete to prevent more seawater from entering the aquifer.
B) Install a line of wells between your "contaminated" well and the coast, and place desalination equipment in each one, to remove salinity from the aquifer.
C) Convert your "contaminated" well into an injection well and begin to pump freshwater into the aquifer through it.
D) Increase the amount of rainfall that occurs just inland from your "contaminated" well.

Question

The well shown in this figure has become "contaminated" with naturally occurring salt water,drawn toward it because too much water was pumped from it for too long.What would be an easy way to restore the aquifer,that is,to push the saline groundwater back toward the ocean? 
A) Cover the near-shore sea bottom with heavy plastic and concrete to prevent more seawater from entering the aquifer. 
B) Install a line of wells between your "contaminated" well and the coast, and place desalination equipment in each one, to remove salinity from the aquifer. 
C) Convert your "contaminated" well into an injection well and begin to pump freshwater into the aquifer through it. 
D) Increase the amount of rainfall that occurs just inland from your "contaminated" well.

Quizplus · Accepted Answer

By converting the "contaminated" well into an injection well and pumping freshwater into the aquifer through it, the saline groundwater can be pushed back towards the ocean. This method is known as "managed aquifer recharge" and can help restore the aquifer without the need for expensive desalination equipment or covering the near-shore sea bottom with heavy plastic and concrete. Increasing rainfall or installing a line of wells with desalination equipment may not be feasible or effective in this situation.

The Well Shown in This Figure Has Become "Contaminated" with Naturally