Food outlets in the North Terminal remain open, but for passenger seating only.
Anthony Rochester, head of networks at SES Water, said that it “had restored water supplies to Gatwick Airport and the surrounding areas by re-routing our network”.
“We’re continuing to work closely with the airport as we understand water isn’t yet flowing throughout their buildings”, he added.
A Gatwick Airport spokesperson said: “Toilets have remained available throughout, and food and beverage outlets are now reopening and serving hot food.
“Since becoming aware of the issue, we have been working closely with our airport partners to help minimise the impact and successfully ensure all of today’s flights continue to depart as scheduled.
“We recognise the inconvenience caused by today’s water shortage and thank passengers for their patience and understanding. We will continue to provide updates as more information becomes available.”
In July, both terminals at Gatwick Airport lost running water for several hours after a power failure at a treatment works in the area.
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