An underground leak is continuing to plague residents in Sudbury despite appearing more than two months ago.
Motorists have had to navigate past a vast pool of water Harrow Road near the junction with Medway Gardens, after it flooded the street in October.
And Councillor Jim Moher says the leak is a massive health and safety hazard.
"The puddle has been turning to ice in the cold weather and putting drivers and pedestrians at risk," he said.
Margaret Saunders, of Harrow Road, added: "It is so dangerous and there is going to be a terrible accident if nothing is done. The water board don't seem to be doing anything about it."
Brent Council said the leak was not its responsibility to fix.
"It is fresh water which means the leak has come from a pipe so it is the responsibility of Three Valleys Water to clean up," said council spokeswoman Cheryl Curling.
"They need to identify where the leak is coming from and repair it. The council has notified the water company about the problem on three occasions."
Three Valleys Water said it was aware of the problem and were working to try and determine its source.
"Our on site team are currently using a number of different techniques to find out whether this is our supply and will continue investigating and work to repair the leak if it is found to be our supply," said a Thames Water spokeswoman.
"Leaks can sometimes be very difficult to find, as the water might be leaking in one location and then appear up to 100 metres away."
The council said it had been gritting the road during the recent cold spell.