The water they sell with the label - ESENTIAL WAITROSE & PARTNERS STILL NATURAL MINERAL WATER 2 LITRES - has deteriorated to the point where it is unfit for consumption. We drink it regularly, but the water in the last bottles we bought smells musty and swampy. I got stomach aches. I have older bottles of the same brand that don't smell like that.
I'm writing here to warn other people to be careful and not drink it because it may be poisonous.
I will also alert all institutions responsible for the safety of food and beverages sold in the UK.