I've been making my own flavored water for a long time. Americans spent about $9 billion on bottled water last year, and we dump 60 million plastic bottles daily. Over 25 percent of bottled water actually comes from municipal water supplies,the same water that comes out of your faucet at home. Tap water safety standards are far stricter than for bottled water. When I make my water I have a pitcher with filter.Then I chill the water.The flavors are easy to find. I buy inexpensive frozen juice concentrate. Could be grape or cranberry, for example. For just a hint of flavor for 1 liter of water I'll add two table spoons of concentrate.Mix it well and pour it my reusable bottle. Lots of times I'll just add piece of fresh lemon,lemon water is my favorite.