A water sample collected from a village well in October had a nitrate level higher than the 10 milligrams per liter maximum, said Village Administrator Travis Cooke.
The water still is considered safe for older children and adults, Cooke said. He cautioned against boiling the water, as that won’t decrease the nitrate level.
Trempealeau is constructing new wells in a treatment facility, but those won’t be completed before fall 2009, he said.
“Unless our nitrate levels go down — which we don’t know — we have to keep an ongoing advisory and send it out every three months,” Cooke said.
Residents with infants 6 months or younger should call the village office at (608) 534-6434, he said. The village hopes to be able to distribute bottled water to them in the future.

