Update from Severn Trent Water 2020 BST:
With water supplies expected to Lorryloads of bottled water on their way for emergency distribution to people in need at Sainsbury's in Barnett Way, Barnwood, Gloucester and Tesco in Quedgeley.
More than 165 bowsers (mobile water tankers) are being mobilised to provide fresh water to areas in need right across Gloucestershire in the next 12 to 18 hours.
A spokesman said: "It is not just Severn Trent that is working on this. Yorkshire Water, Anglia Water and Thames Water have all offered their services to help the emergency water supply effort and if we may have to call on the military to help distribute water to areas in most need."
Water supplies in Gloucester have started to dry up after a pumping station failed earlier on Sunday. Water supplies to Cheltenham, Tewkesbury and the surrounding villages are said to be likely to fail later
Severn Trent is stressing that NO tap water in the area is contaminated - but flood water IS.
Fresh water supplies - bottled now and bowsers later - are being brought in ONLY to supply water to householders who have no drinking water on tap.
Severn Trent is asking people where possible to avoid contact with flood water which IS contaminated and on no account to play or swim in flood water.