You are testing the groundwater quality of an aquifer and find that it has high amounts of arsenic.What is the likely source?
A) The arsenic comes from minerals in the aquifer rock that have dissolved.
B) The arsenic comes from the reaction of the water with your testing supplies.
C) The arsenic is being poured into the groundwater to poison the town.
D) All groundwater contains high amounts of arsenic.

Question

Quizplus · Accepted Answer

High amounts of arsenic in groundwater are commonly caused by minerals in the aquifer rock that dissolve into the water. This can happen naturally, or due to human activities such as mining or drilling. The other options are possible but much less likely. The arsenic from testing supplies would be small and would likely not cause a high amount of arsenic in the water, and intentional poisoning of a town's water supply is extremely rare.

You Are Testing the Groundwater Quality of an Aquifer and Find