A transparent standard for intelligently remineralized water.
Most bottled and purified water is stripped of the minerals our bodies rely on. MineralizedWater.org is an independent, science-based initiative defining what good remineralization looks like — starting with the balance of calcium and magnesium.
Our goal is to create a credible category and a clear rating, so consumers, companies, and regulators can all speak the same language about what is actually in the water.
Five levels of mineralization
A simple five-star scale based on two essential minerals. Higher ratings require higher — and balanced — levels of calcium and magnesium.
- Minimum MineralizedCalcium: ≥ 20 mg/LMagnesium: ≥ 10 mg/L
- EnhancedCalcium: ≥ 50 mg/LMagnesium: ≥ 25 mg/L
- FunctionalCalcium: ≥ 80 mg/LMagnesium: ≥ 40 mg/L
- Advanced BalancedCalcium: ≥ 150 mg/LMagnesium: ≥ 75 mg/L
- Premium ProfileCalcium: ≥ 200 mg/LMagnesium: ≥ 100 mg/L
Draft for review. These thresholds are a proposal pending sign-off from our scientific advisory group. The first-star threshold in particular is likely to be adjusted.
See the full methodology on The Standard.
Clear definitions, grounded in science.
We are not here to rank or criticize brands. We are here to define a category well, and to make it easy to understand and adopt.
Remineralization, explained
What remineralization is, why purified water often lacks minerals, and how minerals are added back responsibly.
Calcium & magnesium balance
The science behind proper mineral ratios — why both the amount and the balance of these minerals matter.
Transparency
Helping consumers and industry understand what is actually in their water, in plain and comparable terms.
Guideline levels
A clear star-rating framework that defines what qualifies as mineralized water at each level of quality.
A shared reference for the whole field.
Companies
Water and beverage producers who want a credible, voluntary standard to design toward and communicate clearly.
Health organizations
Researchers and public-health bodies seeking a consistent vocabulary for mineral content in drinking water.
Regulators
Government and standards bodies who can reference a transparent, expert-reviewed framework as it matures.
Help shape the standard.
We list products that voluntarily meet the standard, and we welcome researchers and specialists to our advisory group. If you build, study, or regulate water, we would like to hear from you.