The Wisconsin Department of Natural Resources says the manure from an accidental spill earlier this week has reached a tributary of the Kewaunee River.
An estimated 100-thousand gallons of manure was released Monday when a farm employee left a valve open. The D-N-R says there is some risk of groundwater contamination, so private well owners are being advised to monitor their water quality closely. The spill was originally reported by the Kroll farm as one-thousand gallons, but state workers realized it was much larger when the cleanup started Tuesday. It is contained.