A 3ft-wide water pipe burst in Herne Hill at the junction of Half Moon Lane at around 5am today.
This has caused substantial flooding to the road and 36 properties in the area. We're really sorry to affected customers and we are working hard to put things right as quickly as possible.
Our main priority is to get people's lives and businesses back to normal.
Our loss adjusters are en route and will soon be talking to people to get the insurance process under way.
Customers should all still have water running through their taps as we have managed to re-route our network.
More top news
Two people are being treated in hospital after they were shot outside a tube station in east London.
Each of London's boroughs has a different policy on recycling, so maybe it's time we switched to a consistent way to go green?
Emergency services were called to Kennington Road, near the junction with Black Prince Road to a report of a man who had been stabbed.