1, 4-dioxane plume, 2009. Image: Roger Rayle / SCIO Residents For Safe Water

Ann Arbor’s 1, 4-dioxane plume: A tale of two cities

In the United States, approximately 10 million pounds of 1,4-dioxane are produced each year. It is being detected in groundwater at dozens of sites across the country. Once thought to be relatively benign, new science says otherwise.