About Waterphile

Methodology

• Values come only from each brand's official website, label, or official water quality report. Each brand page links to its source and shows the date we last checked it.
• If a brand does not publish a value, we show a dash (—, “not published”). We never estimate, average or fill in values from other sites.
• European brands usually publish dry residue at 180 °C; US reports publish TDS. Nitrate is published as NO₃ in Europe and usually as nitrogen (N) in US reports. We show each as published and do not convert.
• Values can differ between bottle sizes, plants and batches. We note known differences on the brand page.
• We plan to re-check every brand at least once a year.

How “similar waters” works

For each pair of brands we take the mineral values both publish as single numbers (TDS, calcium, magnesium, sodium, potassium, bicarbonate, sulfate, chloride, silica), and need at least 5 of them. We compare them on a log scale, so 5 vs 10 mg/L counts the same as 50 vs 100 mg/L, and list the closest. pH and nitrate are not used. Ranges, “not detected” and unpublished values are left out. Similar minerals do not mean similar taste.

Not medical advice

Not medical advice. Waterphile shows mineral values as published by each brand, for general information only. If you have a health condition, follow a restricted diet or prepare infant formula, ask a doctor, pediatrician or health visitor.

Corrections

If a brand has updated its analysis, please tell us with a link to the official source. A contact address is coming soon.

Advertising

This site may show ads and, in future, retailer links. Rankings are based only on published data.