PHILADELPHIA (WPVI) --The School District of Philadelphia is retesting drinking water in schools to make sure it's free of lead.
Samples will be taken at 40 schools to make sure they comply with current EPA and Philadelphia Department of Public Health standards.
The retesting is part of the district's Safe Drinking Water Program.
Schools in areas where children have high blood-lead levels, and older buildings will be tested.
The school district last performed water testing in 2010.