Columbia County's newest school remained without water for a second day.
A water test Tuesday found debris in the lines at Lewiston Elementary School, and drinking water was off limits when the school opened Wednesday.
Water use was again restricted Thursday as testing continued.
Billy Clayton, the county's Water-Sewer Department director, said a third test completed Thursday should showwhether the water is safe to drink by this afternoon.
Mr. Clayton said the test is so sensitive that his department requires two positive results.
The water department has its own state-approved laboratory to test water samples, which take 24 hours to complete.
With the water cut off, Mr. Clayton's department has sent in a water truck to supply the school's kitchen, while the school system provided bottled water.
"With new lines, anything can get in, and that's apparently what has happened," said school Superintendent Tommy Price.
Reach Melissa Hall at (706) 868-1222, ext. 113, or firstname.lastname@example.org.