GREENTOWN, Ind. (AP): Local health officials are pleased by test results showing elevated levels of lead in fewer than five students or staff members at Eastern Howard School Corporation.

The Kokomo Tribune reports that the Howard County Health Department tested 635 students and staff in February after water tests in November showed elevated lead levels in drinking water from a classroom’s sink at Eastern High School.

An initial blood screening found blood lead levels above what’s deemed safe by the Centers for Disease Control and Prevention in six students and staff.

The health department conducted a blood draw from five of those individuals to confirm the initial test. The follow-up test determined that fewer than five of them had elevated lead levels in their system.