Eight fire engines and around 60 firefighters have been called to reports of a burst water main in Queens Drive, Hackney, the London Fire Brigade has said.
Queens Drive resident Steve Stubbs told the PA news agency: "My water didn't work when I went to grab a drink so I asked my housemates whether they had any issues - one of my housemates left moments before it happened, it seemed.
"Then I checked Twitter and saw one tweet about a flood on Queens Drive.
I thought... oh that's where we are.
I opened the balcony door and saw this river flowing down the road.
"The school looks OK as it's on slightly higher ground, but residents around the area on ground doors are having issues I think.