Area's water 'tops for taste'.
Water from 10 regions was marked by judges in a blind taste test at the Tom's Kitchen restaurant in Chelsea, London.
And the judges marked Severn Trent Water the best.
The panel, which included Michelin starred chef Tom Aikens, gave each sample a mark out of five for clarity, smell and most importantly taste.
Severn Trent Water was described as having a "clean taste" and being "very fresh" by Mr Aikens.
Richard Rotti, head of wines at Annabel's, said the water was "beautifully pure, a mountain stream of freshness".
David Wickens, quality and environment manager for Severn Trent Water, said: "We take the production of high quality drinking water very seriously."