The Ogallala aquifer described in the Closer Look box in Section 18.3, provides 82% of the drinking water for the people who live in the region, although more than 75% of the water that is pumped from it is for irrigation. Irrigation withdrawals are approximately 18 billion gallons per day. (b) What process or processes accounts for the presence of arsenic in well water?

Video transcript

Hello everyone Today. We are being asked to determine how does arsenic leach into well water? Well, the answer is that arsenic leaches into well water through the process of dissolving. See if minerals that are in the rock feed somehow into the aquifer fire and they're soluble. They dissolve in the water. And so they usually will take the form of arsenic oxide ions, which is presented as a S. 203 ions, and this is dissolved in the aquifer fire, giving us D as our final answer. I hope this helped, and until next time.