The City of Ottawa, under a boil water advisory since Tuesday afternoon, sent a water sample to the Kansas Department of Health and Environment in Topeka and are awaiting the results, according to a city news release issued Wednesday morning.

The release said the city will not receive any updates from the lab until after 8 a.m. Thursday, which means the boil water advisory remains in effect until at least then. City officials said any updates will be released when they become available.

KDHE issued a boil water advisory Tuesday afternoon for Ottawa because compressed air entered the distribution system during maintenance on the irrigation system at the high school, 1120 S. Ash St., Ottawa, which puts the system at risk for contamination, a release said.

“The water is usable except for consumption,” Dennis Tharp, city utilities director, said. “There is water pressure. If you’re going to drink it or cook with it, it needs to be boiled.”

City officials said no rural water districts are effected.