This article on wikipedia provides the details of the phenomenon of arsenic contamination of groundwater and provides information on the following lines:

• The definition of arsenic contamination
• The risks associated with arsenic contamination
• Reported incidents of groundwater arsenic contamination from all over the world
• Contamination specific nations and regions
  • Bangladesh
  • West Bengal
  • United States
  • Nepal
• Water purification solutions
  • Small scale water solutions
  • Large scale water solutions
  • Subterranean Arsenic Removal (SAR) Technology
• Dietary intake
• References
• External links