Corrosion of galvanized pipes; erosion of all-natural deposits; discharge from metal refineries; runoff from squander batteries and paints Arsenic is a powerful carcinogen and common contaminant in consuming water. Arsenic leads to thousands of situations of cancer yearly within the U.S. Click this link to study more details on arsenic. https://ca18518.canariblogs.com/air-quality-compliance-in-irvine-no-further-a-mystery-43463164