RAW sewage leaking across London Road and into properties in West Croydon has been described as 'utterly horrific' by Thames Water.
A spokesman said staff are on the scene, at the junction with Hathaway Road, and apologised for the 'mess'.
"We are dealing with a serious issue of sewer flooding in Croydon," the spokesman said.
"We are still investigating exactly what has caused this and are working hard to try and prevent any further damage.
"Some properties in the area are suffering with internal sewer flooding which is utterly horrific and we are doing everything we can to help these people.
"We're really sorry for the mess this has caused."
It is understood the leak began shortly after 1pm.
Raw sewage began gushing across London Road and into some of the properties in the area.
Prem Sundaram, owner of Select Supermarket, said he had put shopping trollies out to try to stop people from driving through the sewage and spreading it across the road, but that it had no effect.
London Road remains open to traffic and Transport for London said public transport is not affected.
