Bubbles have been given a bad rap, thanks to Coke, Fanta etc.… but that’s not the bubbles fault!
To create the palatable, enjoyment of the fizz, carbon dioxide is added (carbonation) to water. This can take place via different methods, which will be explained later, but essentially the bubbles are harmless for us, despite some myths (of calcium depletion from the bones, and eroding tooth enamel) which are unproven. The only possible difference is a slightly lower PH level, which in some opinions gives sparkling water a slightly more sour taste; and for those with sensitive stomachs or symptoms of IBS (irritable bowel syndrome), may find the extra bubbles cause some stomach discomfort.
So essentially still water and bubbled water are equally good for hydration and health but… not all waters and not all bubbled waters are the same!
Seltzer and soda water is created from plain water, which could be sourced from absolutely anywhere and both have been artificially produced by passing pressurized carbon dioxide through water. But while seltzer contains no added ingredients or flavourings, soda water often contains additives such as table salt, sodium bicarbonate, or potassium bicarbonate to add a slightly salty flavour (as is the case with many other flavoured sparkling
Mineral or spring water typically comes directly from the source of natural springs. While not all mineral water is “sparkling”, the bubbly varieties get their effervescence from naturally occurring gases. After mineral water is bottled, manufacturers may add more carbon dioxide artificially. Because it is filled with a high number of naturally occurring minerals like magnesium, potassium, and calcium, sparkling mineral water contains a distinct, yet slight mineral bite.
In a nutshell: Look out for salts (sodium) and other additives found in soda or flavoured waters… but when it comes to hydration and health: still, sparkling, mineral or spring, whichever goes down best!