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Purified water brands

Purified waters, best score first.

Criterion: Waters we list as purified (US FDA definition: produced by distillation, deionization, reverse osmosis or similar) with a Waterphile Score, highest first.

Why it matters

In the US, the FDA defines purified water as water produced by distillation, deionization, reverse osmosis or another suitable process. It often starts as municipal water and has few minerals unless some are added for taste. How scores work →

Sources (1)
20 waters qualify · per litre, as publishedCompare the top 3 →
Sources (20)

FAQ

What is the best purified water?

By Waterphile Score, the highest-scoring purified water is Mai Dubai (8.7 out of 10), followed by Great Value Purified Drinking Water (8.4) and Kirkland Signature (Costco) Purified (8.4). The score comes from each brand’s published analysis and is not a health or safety rating.

Which purified water has the lowest sodium?

Of the 12 ranked here that publish sodium as a single number, Polar (purified water) lists the least: 1.1 mg/L.

Which purified water has the highest pH?

Of the 17 ranked here that publish a single pH value, Essentia lists the highest: pH 9.92.

Values as published by each brand, per litre. Not medical advice.