A recent report shows more than two dozen water sources in school buildings across Bradley County tested positive for lead earlier this year.
All schools built before 1998 are required to have their water sources tested for lead, according to state law.
The report says 141 water sources in 12 buildings were sampled in May in accordance with EPA standards, according to a news release from Bradley County Schools. Preliminary results released in June showed that of the sources sampled, one source had lead levels at or above the state's maximum level. Another 22 had levels at or above the American Academy Pediatrics recommended level.
It is not known which buildings tested positive.
Bradley County Schools shut down the water sources and fixed the issues before the new school year began, the release states.