chromium 6 is actuly what Erin Brocovich was so mad about before the movie was made. I suspect alot of problems, with people that have sensitive digestive systems, are a direct link to this, and t has been know for a long time that this would be in the water, and still nothing from anybody or any agency they say the levels are not dangerous, when in that movie they got all kinds of trouble started and lots of people got sick. And the levels now are reported to be the same level and even higher. what is realy in the water? and why?