Southern Water says staff are “manning” the pumps after another failure at the Rumfields tower left properties in the Broadstairs and Westwood areas without water again.
It is the third outage in less than a month.
Supply was interrupted last week due to a technical fault with the pumps and in December properties were without water for around 3 days following a burst main at the site.
A Southern water spokesperson said: “We’re sorry for the disruption customers in Broadstairs experienced today.
“A failure at our booster pump station meant water was not being pumped through the network causing low pressure and loss of water.
“The pumps are now running and we are manning the site to ensure resilience.”