Is our drinking water causing diabetes?

I just read a disturbing article about arsenic in drinking water possibly contributing to diabetes. The link is that people with a higher concentration of arsenic in their bodies have a much higher incidence of diabetes. The research confirms tests previously done with animals. Can this help explain the epidemic in diabetes in humans and our pets?

http://health.usnews.com/articles/health/diabetes/2008/08/19/is-your-drinking-water-giving-you-diabetes.html