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Chemical formula: H2O
Other common names: Aqua, names specifying the source of water (distilled water, deionized water, spring water, mineral water)
Function: Solvent
EWG Skin Deep rating: 1 data-robust
PubChem GHS classification: primary hazards-none
EPA Safer Chemical rating: green circle
CIR Expert Panel report: n/a
More: Reflexion Horse purifies its water using reverse osmosis. Reverse osmosis is a process that uses a "membrane under pressure to separate relatively pure water from a less pure solution". (Reference one [R1], Reverse osmosis, 1980, paragraph 2)
Date created: May 27, 2026
Date updated:
Fun facts!
The water cycle on Earth recycles water and has the same amount of water it had when Earth was formed. That means you could fill a glass with water and be drinking the same water molecules a dinosaur drank!
Seventy-five percent of the human brain is water...
Water regulates your body's temperature and it regulates Earth's temperature.
One percent of Earth's water is drinkable and useable for human needs!
Water facts of life. (2016, February 23). United States Environmental Protection Agency. Retrieved on May 27, 2026. https://www3.epa.gov/safewater/kids/waterfactsoflife.html.
Purified Water
References
Purified Water
Reference one [R1]. Reverse osmosis. (1980, October 21). United States Food and Drug Administration. https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/inspection-technical-guides/reverse-osmosis.
[EWG reference]. Skin deep water. (n.d.). Environmental Working Group. Retrieved on January 14, 2026. https://www.ewg.org/skindeep/ingredients/706945-WATER/.
[GHS Classification reference]. Compound water. (2004, September 16). National Library of Medicine. Retrieved on January 14, 2026. https://pubchem.ncbi.nlm.nih.gov/compound/Water.
[EPA reference]. Safer Chemical Ingredients List. United States Environmental Protection Agency. Retrieved on January 14, 2026. https://www.epa.gov/saferchoice/safer-ingredients.