A water main break flooded Webster Avenue in the Bronx Monday night, with water pouring into buildings and submerging cars, officials said.  

The flooding began around 7:30 p.m. near East 201st Street in Bedford Park. 

Crews tried to open drains, but the water was coming in too fast to control, and emergency teams had trouble trying to find the source of the water to shut it off, according to officials. 

Hundreds of residents were left without water, and sections of Webster Avenue remained closed Tuesday morning while the cleanup continued.

The city Department of Environmental Protection identified the source of the flooding as a 48-inch water main break beneath Mosholu Parkway, located about a block from Webster Avenue.  

The cause of the break is under investigation, but repairs are underway, according to the DEP.  

At a press conference Tuesday morning in the Bronx, Emergency Management Commissioner Zach Iscol said several city agencies — including the FDNY, the NYPD, the Department of Sanitation and the Parks Department — were working together to clean up the area. 

Iscol said gas had been shut off to approximately 13 buildings due to the flooding, and that power would have to be shut off on multiple blocks while crews examined the basements of flooded buildings.

"There’s a lot of work that needs to be done as well to clean up the streets, that we’ll be doing over the next couple of days,” Iscol said.

An FDNY official said several first-floor apartments were evacuated Monday night due to flooding, and one person was rescued from a vehicle that had been trapped in rising water.

The official said about 100 firefighters were on the scene responding to flooding at the height of the incident.

As for cleanup operations, Iscol said both DEP and Department of Sanitation crews were in the process of cleaning mud from the streets of the impacted areas. 

Con Edison building inspections will take place next, and once the water recedes further, underground infrastructure inspections will begin, Iscol said.

The FDNY is urging people to avoid the area while cleanup efforts continue. 

Iscol urged anyone whose small business has been impacted to call 311 for assistance. Those with property damage, Iscol said, should download the New York City Comptroller property damage report form to file a claim for compensation.