NAMPA, Idaho — A popular southwestern Idaho lake is contaminated with E. coli bacteria.

The Idaho Department of Environmental Quality says lab tests Friday found high levels in Lake Lowell of the bacteria that signals the presence of fecal matter.

Officials on Friday said people visiting Lake Lowell shouldn’t ingest the water and should wash their hands after coming in contact with it.

The state agency says it will monitor the water and try to find out the extent of the contamination and its source.