We have really good quality tap water, but shops still sell 'spring water'. There are a several towns which are known for their spring water spas. Often said to have medicinal properties.
Some years ago I was in Buxton , one such spa town. You could buy the bottled spring water, or simply go to the spring, which is in town, and fill your own bottles for free.
St Ann's Well, natural spring water, Buxton, Derbyshire:
The first time I was in Buxton, at the age of 16, I drank the Buxton Spring Water from St Ann's Well. It was still warm from being 1,500ft underground. I generally only drink tap water, but on the few occasions that I buy bottled water, usually if I'm out for the day, it's Buxton Spring Water I buy. It seems that most of the bottled water sold in the UK is natural spring water.
Your post reminded me of Dasani (Coca-Cola) bottled water and the Fiasco surrounding it -- something that I followed in the news at the time. They encouraged stores in Buxton to stop stocking Buxton water by saying they would provide the stores with free chillers, but only if they stopped stocking Buxton water. This was followed by News reports of Dasani's "Bully Boy Tactics".
Dasani set up a factory in Sidcup, southeast London, and they marketed it as a high-quality, purified water, and as being better than tap water. It was only going to get worse from there on, as they were selling and marketing public British tap water with a roughly 800 to 1,000% markup. Some UK consumers, who previously drank bottled 'spring water', felt cheated.
The British Food Standards Agency and Advertising Agency got involved. As did Thames Water, who were supplying public drinking water to Dasani. Thames Water said Dasani's various statements had made it sound as though Thames Water 'drinking water' wasn't already purified enough or safe to drink. Dasani's bottled water was then tested, and found to have "
chemicals in it that shouldn't be there". Chemicals that were being added for taste -- Magnesium Sulfate; Potassium Chloride; Sodium Chloride (Salt). Then it was found that due to an accident in its 'manufacturing' process, it contained illegal levels of Bromate (a suspected carcinogen), when compared to UK standards.
Dasani then recalled its product, stopped production, and left the UK. They haven't been back since.