Six more buildings in Howard County Schools test positive for high levels of lead in their water.
The latest tests revealed Centennial High School, Glenelg High School, Hammond Middle School, Harpers Choice Middle School, Manor Woods Elementary School and Waterloo Elementary School are have elevated levels of lead.
18 of 29 schools tested had high lead levels in the water samples.
Howard County Public Schools hopes to have all 77 school facilities tested by 2020.
