The break occurred in a 12-inch main on the 4100 block of East Joppa Road, near Seven Courts Drive, according to Baltimore County Department of Public Works. Crews closed the roadway in both directions at the site.
The result of the break is a "wider outage than initially expected," according to a public works spokesperson. "[It] may be due to some closed valves."
Baltimore County Public Schools said the break caused water outages at Carney Elementary, Oakleigh Elementary and White Oak Schools. No cancellation of classes has been announced by BCPS.
Public works officials could not give an estimate on when the break would be fixed, as of the publication of this article.