A water main break is causing people on the northwest and southwest sides of Cedar Rapids to have low or no water pressure.

Cedar Rapids spokeswoman Maria Johnson said the break happened at F Avenue and 18th Street NW.

She said if you're pregnant, nursing, or have a baby younger than 6 months old you should use bottled water only.

Crews have been working on the break since 2 Thursday morning and told KCRG-TV9 they don't have a time estimate of when it will be repaired.

Johnson said the Water Division is issuing a precautionary boil advisory through at least Saturday afternoon for an area bordered by F Avenue NW, 13th Street SW, 16th Avenue SW and 25th Avenue SW.

She said people living in that area should check

for updates.

The city is advising residents in the affected area to boil water before consuming it or using it for cooking.

The water main break is affecting two Cedar Rapids schools. Officials said there will be no classes at Cleveland Elementary. And 6th and 7th grade students at Roosevelt Middle School will be dismissed at 9:40 a.m. 8th grade students will be dismissed at 11:15 a.m. following the recognition assembly.