Water companies across London have asked customers to use as little water as possible as severe weather conditions has caused multiple pipes to burst.
More than 20,000 people are believed to be affected as extreme weather conditions have also caused a drained reservoir in Hampstead.
Customers have complained they have been unable to register outages with Thames Water as the helpline is unavailable.
Thames Water said they were aware of the problems and were hoping to resolve the problem.
"We're aware that some customers in #IG7 #IG8 may be experiencing no water/low pressure. We have a team in the area investigating and we hope to repair it as soon as possible," they tweeted.
Shops in the worst-affected areas have reportedly run out of bottled water as people to look to stock up.
Thames Water is currently trying to set up water bottle stations while the pipes are being fixed, the BBC reported.
The warnings come as thousands of households in the south and southeast were left without water as frozen pipes burst as they thawed.
South East Water apologised to customers across Berkshire, Hampshire, Kent, Sussex and Surrey who had low pressure or no supply at all.
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