Category comparison
Mineral Water vs Spring Water
Both come from underground sources, but they are not the same product. The differences are legal (how each is defined and labeled), chemical (mineral content and consistency), and commercial (price and positioning).
The legal difference
In the U.S., spring water must flow naturally to the surface from an underground source, but it has no minimum mineral content. Mineral water must have at least 250 mg/L of TDS coming from a protected underground source. In the EU, natural mineral water is held to a stricter source-protection standard than spring water.
The chemistry difference
Most spring waters sold in the U.S. have a TDS of 50\u2013150 mg/L — light, low-mineral water. Mineral waters can range from 250 mg/L (the legal floor) to over 2,500 mg/L for brands like Gerolsteiner. That difference is measurable on the tongue and meaningful for calcium and magnesium intake.
The consistency difference
Spring water composition can vary between sources — a bottle labeled "spring water" might draw from different springs in different regions. Mineral water composition must be stable: the same brand should deliver the same mineral profile, bottle after bottle.
Real-world examples
Spring waters: Poland Spring, Deer Park, Crystal Geyser, Acqua Panna, Mountain Valley. Mineral waters: Gerolsteiner, S.Pellegrino, Perrier, Aqua Carpatica, Evian.
Frequently asked questions
Is mineral water more expensive than spring water?
Usually yes — source protection, mineral testing, and (often) import from Europe drive higher costs.
Can a spring water also be a mineral water?
Yes, if it meets the TDS threshold and source rules. Many European mineral waters could legally be sold as spring water but choose the more rigorous category.
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