High silica

Silica varies a lot between springs. These publish the most.

Criterion: Silica (SiO₂) published as a single number, highest first. No WHO, EU, UK or US FDA rule sets a silica level or label claim.

Why it matters

Silica dissolves from the rock a water passes through, so values vary widely between springs. None of the WHO, EU, UK or US FDA rules we track set a limit or label claim for it, and we make no health claims about it.

Top 20 of 70 qualifying waters · per litre, as publishedCompare the top 3 →

#	Water	Silica	Score	Compare
1	SourotiGreece	100 mg/L	—	Compare
2	Kızılay ErzincanTurkey	99.5 mg/L	—	Compare
3	RozanaFrance	97 mg/L	—	Compare
4	FIJI WaterFiji	86 mg/L	9.3	Compare
5	AntipodesNew Zealand	78 mg/L	7.3	Compare
6	Otakiri SpringsNew Zealand	74 mg/L	7.6	Compare
7	SmithwaterNew Zealand	71 mg/L	8.4	Compare
8	Daylesford & Hepburn Mineral SpringsAustralia	70 mg/L	7.2	Compare
9	BambitoPanama	65 mg/L	—	Compare
10	Kızılay AfyonTurkey	63.4 mg/L	—	Compare
11	Pedras SalgadasPortugal	62 mg/L	6.3	Compare
12	Tongariro Natural Spring WaterNew Zealand	59.5 mg/L	7.8	Compare
13	La SalvetatFrance	55 mg/L	8.1	Compare
14	SpritzerMalaysia	53 mg/L	8.8	Compare
15	BeypazarıTurkey	48.21 mg/L	3.6	Compare
16	AuraThailand	45.5 mg/L	9.2	Compare
17	Castle RockUSA	45 mg/L	8.4	Compare
18	Knjaz MilošSerbia	45 mg/L	3.8	Compare
19	Hawaiian SpringsUSA (Hawaii)	43.6 mg/L	8.2	Compare
20	ArcensFrance	43 mg/L	5.3	Compare

Sources (20)

Souroti: souroti.gr – Ofeli, approximate composition (~ values, undated) · checked 2026-10-26
Kızılay Erzincan: Kızılay İçecek product page, Erzincan Sade 200 ml (mg/L) · checked 2026-10-26
Rozana: Sources ALMA brand page – 'Composition moyenne en mg/L' (undated) · checked 2026-10-26
FIJI Water: FIJI Water 2026 Bottled Water Quality Report (report date March 2026, linked from fijiwater.com FAQ) · checked 2026-10-25
Antipodes: Antipodes Water, About us (minerality at source, +/- 20%) · checked 2026-10-25
Otakiri Springs: otakirisprings.co.nz, Water quality analysis: Hills Laboratories 2025 results (with 2024 and older results) · checked 2026-10-26
Smithwater: smithwater.co.nz, Our Water: indicative analysis, still (no analysis date given) · checked 2026-10-26
Daylesford & Hepburn Mineral Springs: mineralspringsco.com, Sparkling Natural Mineral Water 750 mL: typical analysis (no analysis date given) · checked 2026-10-26
Bambito: Bambito official site, 'Perfil mineral' (Origen page and FAQ; approximate values and ranges, no analysis date given) · checked 2026-10-26
Kızılay Afyon: Kızılay Maden Suyu site (kizilaymadensuyu.com.tr), Afyon sade mineral values (mg/L) · checked 2026-10-26
Pedras Salgadas: Super Bock Group product sheet – Pedras Salgadas, per LNEG bulletin 19/H/2014 (sheet updated 08.01.2020) · checked 2026-10-26
Tongariro Natural Spring Water: Tongariro Natural Spring Water official site, 'Typical Analysis (mg/Litre)' (no analysis date given) · checked 2026-10-26
La Salvetat: lasalvetat.fr – Composition minérale and 'Nature' range page (undated) · checked 2026-10-25
Spritzer: Label photo, Spritzer natural mineral water 350 mL, 'Mineral Content' panel (Open Food Facts image, uploaded 2019-11) · checked 2026-10-26
Beypazarı: Beypazarı Doğal Maden Suyu e-catalogue, page 16 'Bir şişedeki mucizeler / Miracles in a bottle' (beypazarimadensuyu.com.tr) · checked 2026-10-26
Aura: aurah2o.com (Tipco), Aura 1.5 L: essential minerals (no analysis date given) · checked 2026-10-26
Castle Rock: 2026 National Testing Laboratories analysis report, Castle Rock still water (sampled 10 Aug 2026) · checked 2026-10-25
Knjaz Miloš: knjaznatura.co.rs (Knjaz Miloš official shop) – product declaration, Institute of Public Health of Serbia 'Batut' lab no. 82 of 19.01.2018 · checked 2026-10-26
Hawaiian Springs: Hawaiian Springs Bottled Water Quality Report 2017 (brand report hosted by Consumer Reports) · checked 2026-10-25
Arcens: Sources ALMA (owner) brand page for Arcens, composition in mg/L · checked 2026-10-26

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