Mountain Valley® Spring Water. America's Premium Water™. Since 1871. National headquarters. Hot Springs National Park Arkansas. Bottled at the original spring source, Garland County, Arkansas. NSF® certified. This bottle made with recycled glass. Naturally occurring in parts per million: Calcium - 74.0. Magnesium - 7.3. Potassium - 1.0. Total dissolved solids 220. 7.8 pH. 800.643.1501. We gladly provide additional consumer information relating to water quality at www.mountainvalleyspring.com.