20 mg natural caffeine. Dripping Springs, TX. Water + electrolytes. Clean energy. Taste great - feels great. 20 mg = 1/4 cup of coffee. Why Curly's? At Curly's, I keep things simple and pure. No B.S., especially with my water. But plain water can be a drag, so I added electrolytes to intensify hydration and a little natural caffeine to boost energy. Wa-la. A functional bottled water to help you get your groove on any time of day. The best part? All you taste is clean, crisp, artesian water. It's water with benefits. Thanks for giving Curly's water a try. Love, Curly. drinkcurlys.com. Please recycle. BPA free.