Credit: File photo

A plumbing problem closed Col. Zadok Magruder High School in Derwood on Wednesday, according to the Washington Suburban Sanitary Commission.

Montgomery County Public Schools wrote on Twitter at 6:13 a.m. that the school would be closed due to a “water main break.”

However, Ayoka Blandford, a spokeswoman with WSSC, said the problem wasn’t a water main break, but a problem with the plumbing on the school’s property.


Blandford said WSSC, which maintains a water main near Muncaster Mill Road, received a call at 11:47 a.m. Tuesday that there was a “suspected broken water main” in the 5900 block of Muncaster Mill Road. The utility shut down the main after school had dismissed, she said, but when crews arrived, they found that the main was not broken.

Blandford said the utility then alerted MCPS that the problem had occurred on the school’s property.

Gboyinde Onijala, an MCPS spokeswoman, said Wednesday morning that they were not sure yet what caused the problem.


Dan Schere can be reached at