The sludge was on its way to a farm in Callaway County to be used as a fertilizer.

That spill could have some lasting effects on the environment. The U.S. Geological Survey looks at the same material to see if it is harmful to fish.

Fish biologist Chris Ingersoll said if the sewage is properly cleaned of harmful metals and microbs it should be safe for the soil: "It's this sludge left over from the processing and specifically the term bio-solids are the types of materials that have deemed to be acceptable for application on areas such as farmland."

The area where the spill happened is along Route UU in Callaway County and it still needs to be cleaned properly in case the sludge was not processed correctly.

Longwell said they need to, "Take the existing requirements to critically look at those to see if were asking enough of the quality of these kinds of materials."

A professor of hydrology and water quality at the University of Missouri said there might be a possibility of danger if the materials entered a water source.

"People don't usually get too concerned about these types of things, until you add water," Jason Hubbart said. 

So far in this case, there doesn't seem to be any danger in the area, but folks who live nearby could have their water tested to make sure. To help make sure the least amount of harmful material got in the soil, crews also cleaned the area with lime.