E.coli contamination has forced school officials to close the field at the East Jessamine High School soccer and track facility.
The field has standing water, and no one knows yet how it got there.
Test samples of the water showed E.coli levels nine times higher than the EPA's acceptable risk.
Jessamine County school officials were advised to just keep people away from the standing water, but they decided to close the entire field for now.
On Thursday, Nicholasville city workers are scoping nearby sewer lines to determine if a leak is the cause of the seeping water on the field.
After a cause has been determined, a plan will be put in place to get rid of the standing water and make the field safe.
In the meantime, alternate locations for games set to start next week are being secured.
School officials hope to keep those games in Jessamine County. Alternate venues include West Jessamine High School, the East Jessamine High School football field, or Asbury College.