Iowa ranks second in cancer rates nationally. A local group is testing water for nitrates and demanding policy change.

Most tap water in the U.S. is safe to drink. But concerns about aging pipes, a group of chemicals known as PFAS and taste ...

There's federal money for local schools to test their water for lead, which can be dangerous for kids. Many school systems opt not to test their faucets, even if it's free. The U.S. Environmental ...