I live in the northeastern United States, and have drank unflavored seltzer water (also known as club soda, sparkling water, fizzy water or effervescent water) regularly all my life. Often purchased in bulk from stores.
Recently, I have noticed that "unflavored" or "original" seltzer are noticeably flavored. Right now, I'm (ruefully) drinking a very clearly peach-flavored seltzer labelled "original" by Polar, but I've noticed this in a variety of brands, including generic ones. The flavoring is considerably weaker than in the seltzers advertised as being flavored, but still noticeable.
Has there been any news coverage of this phenomenon? (I'm new to this site but I think it's on topic here because it involves selection of ingredients).