Purified

Deionised water

Written by the VitaWhat editorial team · Medically reviewed by Steve Davis · Last reviewed 19 July 2026 · Editorial policy

Water with charged mineral ions removed by resins.

Where it comes from

Passed through ion-exchange resins that strip out charged mineral ions.

What it contains

  • Almost no dissolved mineral ions
  • May still contain non-ionic impurities

Benefits

  • Very pure for industrial and lab use

Cautions

  • Not intended for drinking
  • may still carry bacteria or organics

Sources & references

  1. WHO — Drinking-water
  2. UK Drinking Water Inspectorate

Related entries

Distilled waterPurified / reverse-osmosis waterAlkaline waterArtesian waterFiltered waterGlacier / iceberg water
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