Up to 40,000 gallons of waste water from a manure pit at the Tyson meat processing plant in Perry spilled into the North Raccoon River this week. The spill started sometime Monday night or early Tuesday morning.

Someone called the meat packing plant late Tuesday morning to report foam in the river. According to information from the Iowa Department of Natural Resources, Tyson workers traced the discharge to a plugged line in their treatment system.

It allowed wastewater from a manure pit to overflow. The company is still working to repair the plugged line. The untreated sewage water is now being diverted into a holding pond.

State officials are monitoring the clean-up and may fine the company for the spill.