South East Water apologised and said it was continuing to release isolated air pockets in the system.
Nearly 6,000 properties in West Kent lost supply on Thursday and some are yet to see it return.
Bottled water stations will re-open on Friday as a precaution, South East Water says.
Customers are experiencing low pressure or no water due to issues at Bewl Water Treatment Works.
Stephen Castle, 59, from Matfield, is charged with the murder of 54-year-old Wayne Woodgate.
Kent Police say the man was hit by a car and a van after leaving his vehicle following a prior crash.
Margate parent Jason Tipple says the potential financial impact is “absolutely terrifying”.
Long traffic queues formed and cars were abandoned in Kent, Sussex and Surrey.
Supplies are returning in Kent and East Sussex and bottled water is available in Hawkhurst.
