Officials say the 16-inch main ruptured on Brunswick Avenue near Eisenhower Drive around 8 p.m. Monday.
The break caused a significant impact on water service, with some users having little to no pressure.
Related: Drivers fear worst as water leaks into Lincoln Tunnel
In the meantime, residents are urged to boil water before drinking, cooking, and other potable water uses due to the potential for the water supply to be contaminated with disease causing microorganisms.
NewsCopter7 over water main break:
Crews are working to repair the main and restore normal service, which they hope can be finished by Tuesday evening.
Brunswick Avenue being closed to through traffic, causing traffic delays.
Motorists are advised to avoid the area.
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