IOWA — A new watchdog group is blaming one of Iowa’s biggest corporations for pollution in the state’s waterways over the past few decades. Ma...

IOWA -- A new watchdog group is blaming one of Iowa's biggest corporations for pollution in the state's waterways over the past few decades.

Made up of 20 groups from around the state, the "Clean it Up Tyson Coalition" announced its creation today.

The coalition says Tyson is polluting Iowa waterways with animal waste runoff, while promoting irresponsible grain production to feed those animals.