Did I Miss Something?

  Now I know Chicago's sales tax is high but when I bought a flavored bottle of water yesterday and noticed a 12.75% sales tax on it, I was shocked.  I know how taxes seem to run rampant in Illinois so I decided to look online to see what exactly the sales tax was for a good like flavored water.  I couldn't pinpoint an exact tax rate for flavored water but I did find out that there is 5 cents added to each individual bottle of water bought.  This excludes flavored water and sports drinks.  This 5 cents is called the "sin tax" since now it is considered a "sin" to fill our landfills with plastic bottles.  People are encouraged to drink tap water out of re-usable containers.  I find that a reasonable argument.  From my online searching though, the origins of the 12.5% tax on my receipt still remains a mystery.