10 pH. Never from a tap. Always a perfect Ten. Do you know the source of your water? Many bottled waters come from a tap and are purified. Ten Spring Water is sourced from America's purest springs deep beneath the Earth's surface. This high pH water is naturally filtered to an incredibly pure state. It's hydration raised to the power of Ten. Electrolytes may crystallize in bottle, just shake gently and enjoy. pH test strips are generally inaccurate when measuring high pH water. Ten Spring Water contains no fluoride. Reduce the waste, please recycle. BPA-free bottle. Instagram: (at)tenwater. For water quality information contact: (678) 389-8800. www.TENspringwater.com. Made in USA.