Arsenic contamination of groundwater in the U.S., China, and many other countries comes from:

Question

Quizplus · Accepted Answer

Arsenic contamination of groundwater comes from weathering of bedrock and sediments. Arsenic occurs naturally in rocks and minerals and can be released into groundwater when these substances weather or dissolve. It is also a common byproduct of mining and industrial activities, but in the case of groundwater contamination, natural weathering of bedrock and sediments is the primary source.

Arsenic Contamination of Groundwater in the U