What is the most accurate definition of "Mineral Water" in the US?

The most accurate definition of "Mineral Water" in the United States is that it contains 250 to 1,500 parts per million (ppm) of dissolved mineral solids. This specification is important because it ensures that the water has a certain concentration of minerals, which can impart various health benefits and contribute to the flavor profile of the water. Mineral water is sourced from natural springs and contains essential minerals such as calcium, magnesium, and potassium, which come from the geological formations through which the water flows.

The range of 250 to 1,500 ppm is established to differentiate mineral water from other types of bottled water, ensuring that consumers receive a product with a specific mineral content that meets regulatory criteria. Other definitions, such as water with added minerals or tap water with minerals, are too vague and do not reflect the unique characteristics of mineral water that arise from its natural source and mineral concentration. Distilled water, on the other hand, involves the removal of minerals and impurities, which is contrary to the essence of what mineral water represents.