DeKalb County Schools released the latest round of results in its system-wide test for the presence of lead in drinking water on Tuesday.

DeKalb Schools began testing their water after an 11Alive investigation about the lack of lead testing in local school districts.

The latest test results show no lead found in two schools: Briar Lake Elementary School and McClendon Elementary.

In two other schools, however, testing found lead at or above the EPA's action level of 15 parts per billion. Those schools were:

- International Student Center. A drinking fountain in a kindergarten sink was found to have 28.2 ppb. That fountain was removed and remediation has begun.

- Former Terry Mill Elementary School (Now the temporary home of Barack H. Obama Elementary School). A kindergarten drinking fountain was found to have 34.1 ppb. The source was removed.

Testing began last month and will continue through next summer. According to the DeKalb County Schools website, out of 16 schools tested, 10 schools had at least one drinking source test positive for lead.

RELATED | High lead levels found in kindergarten classroom water fountain

DeKalb Schools have set up a new hotline to answer any questions about the lead testing program. It will be staffed from 8 a.m. to 4:30 p.m., Monday to Friday. The number is 678-676-1222.

Operators can answer general questions about the testing schedule and the results of tests posted online.

The DeKalb County Schools are posting testing results on their website. The system operates 150 schools and facilities with more than 100,000 students.

Photos: Atlanta Public Schools lead testing

RELATED | 2,500 Georgia Children test positive for lead exposure

AND | Investigation: Thousands of Georgia children sickened by lead

ALSO | Investigation: Lead poisoning numbers may be higher than reported