What is spring water?

https://www.healthline.com/nutrition/spring-water-vs-purified-water#spring-water

Spring water is a popular form of bottled water. It comes from groundwater, which is water that exists underground in an aquifer that sits at or below the earth’s natural water table.

As water naturally flows to the ground’s surface, it’s collected at the opening of a spring. It can also be collected directly underground from a borehole.Trusted Source

This water is generally considered pre-purified, as it has traveled through natural filters like limestone, sandstone, and clay.

Once collected, it’s sampled and analyzed to ensure it meets strict safety standards set by the Food and Drug Administration (FDA) and Environmental Protection Agency (EPA). Finally, it’s bottled and ready to be sold.