Arsenic Hot Spots (IMAGE) Columbia Climate School Caption These are hot spots of dangerously high arsenic content (yellows to reds) can be found in many states. Greens show somewhat lower levels, but some health authorities say no level may be completely safe. Credit US Geological Survey Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.