Does carbonation make sparkling water acidic?

Yes. The CO2 reacts with water to form carbonic acid. It is weakly acidic. Don’t know how much. Best thing would be to get some litmus paper and experiment.

Wouldn’t logic dictate that the level of acidification would depend on the amount of gas introduced per volume of water?

Are you asking whether soda is a healthy alternative to water?

Read about it and decide here. Read other articles as well.

https://www.scientificamerican.com/article/is-carbonated-water-bad-for-you/

I’m speaking of unsweetened sparkling water, not Coke. I know that Coke has phosphoric acid, which would make the water way more acidic than any carbonation could.

Sparkling water usually has a pH of around 3–4 which is considered slightly acidic. This is, indeed, due to the carbon dioxide used for the sparkle forming carbonic acid. But pH is a funny thing in that a little change chemically to pure water (pH 7) will alter it. Taking pH 7 water and setting it out on the counter for a day or so will give you water with a pH of around 6 just due to CO2 in the air being absorbed.
Are you worried about the acidity of sparkling water affecting your body? If so, what are your concerns?

Yes, I like sparkling water, and it seems like so much of everything I eat is acidic:
fruits (oranges, and all citrus seem particularly acidic), coffee and tea are said to be slightly acidic, tomatoes; onions seem a bit acidic to me. Of course, salad dressings with vinegar are acidic. They say even distilled water has a pH below 7.

If you take vitamin C, that’s acidic. So is aspirin.

So, is it possible to eat/drink too much acidic stuff? Do I need to keep watch how much I consume?

@2davidc8 are you worried about having your body get too acidic? That is a tricky thing. The human body operates somewhere between a pH of 7.3 and 7.4. But the things that change the pH of your body are not always what you think. There are a number of books out there about alkaline diets…diets designed to raise the pH of your body to the upper end of that spectrum. The first thing you have to understand is how they determine if a food (or liquid) is alkaline or acidic towards the pH of your body. What they do is take foods, burn them to ash and then measure the pH of the ash. This is an important thing because as your body uses the food and drink as fuel, it is effectively doing just that…burning the material to it’s base components. If you are truly looking for alkaline foods, you need to eat mainly green veggies. No meat, no sugars, no alcohol, no coffee, no dairy, all of which are acidic foods…their byproducts are acidic. Interestingly, it is recommended that you drink a certain amount of apple cider vinegar (with the mother) and you are allowed to use lemon juice. Both of these things on the surface are acidic, until you burn them and then they turn alkaline. The seltzer water or sparkling water isn’t going to impact your body. The carbonic acid will get absorbed into your system, the CO2 will come back out of solution, and you will exhale it as you breathe.

@2davidc8 Don’t worry about eating acidic things. Your body is remarkably capable of neutralizing anything. Your stomach is way more acidic than anything you could eat, and it’s immediately neutralized as soon as it gets into the duodenum and gets exposed to bile. Eat whatever you want.

Thank you, @Caravanfan and @seawulf575, for your wonderful answers.