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Pedra Azul

Pedra Azul is a very light, low-pH mineral water from Marechal Floriano in the mountains of Espírito Santo, where it is the leading brand. — as described by the brand

7.4/10Waterphile Score9/9 properties published

pH5.25 ideal 6.5–8.53.4
TDS17.35 mg/L ideal 225–500 mg/L5.0
Sodium1.8 mg/L ideal up to 20 mg/L10.0
Calcium1.02 mg/L ideal 36.7–80 mg/L · counts half5.0
Magnesium0.49 mg/L ideal 16.7–30 mg/L · counts half5.0
Sulfate0.5 mg/L ideal up to 248 mg/L10.0
Chloride2.49 mg/L ideal up to 250 mg/L10.0
Nitrate4.6 mg/L ideal up to 10 mg/L10.0
Bicarbonate2.03 mg/L ideal 30–396.6 mg/L · counts half5.0

Each bar is out of 10 for that property. Deductions: −0.1 for an undated analysis. Editorial score, not a health rating. How scores work →

Mineral FactsPer litre · 10 of 11 values published

Basics

5.25

Total dissolved solids dry residue 180°C (calculated)

17.35 mg/L

Minerals

Calcium

1.02 mg/L

Magnesium

0.49 mg/L

Sodium

1.8 mg/L

Potassium

0.72 mg/L

Other dissolved substances

Bicarbonate

2.03 mg/L

Sulfate

0.5 mg/L

Chloride

2.49 mg/L

Nitrate (NO₃)

4.6 mg/L

Silica

—

— Not published by the brand · we never estimateSource: aguapedraazul.com.br, Nossa Água: physical-chemical characteristics and chemical composition (no analysis date given) · checked 2026-10-26

Producer table: pH 5.25 (25 °C), 20.4 °C at source, conductivity 27.3 µS/cm, dry residue at 180 °C (calculated) 17.35 mg/L; barium 0.040, calcium 1.02, strontium 0.017, magnesium 0.49, potassium 0.72, sodium 1.80, nitrate 4.6, sulfate 0.5, fluoride 0.02, chloride 2.49, bicarbonate 2.03 mg/L. Among the lightest waters on Waterphile. No analysis date published.

How it stands out

Lowest bicarbonate of the 152 brands that publish a bicarbonate value (2.03 mg/L).
Sodium is 1.8 mg/L, under the 20 mg/L level the UK/EU uses for “suitable for a low-sodium diet” on natural mineral water labels.

UK/EU label thresholds met

Applied to the published numbers for information; these indications legally apply to natural mineral water labels.

Very low mineral content (fixed residue ≤ 50 mg/L)
Suitable for a low-sodium diet (sodium < 20 mg/L)

Taste notes

No taste notes yet. Soon you will be able to say how Pedra Azul tastes to you. Results will appear here once people have voted; nothing is shown until then.

SoftNo votes
CrispNo votes
SmoothNo votes
MineralNo votes
SaltyNo votes
SweetNo votes
BitterNo votes
MetallicNo votes

Ratings & reviews

Waterphile Score lab data

7.4/10

From the brand’s published mineral values. How it works

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Similar waters

Computed from published numbers only: the waters whose mineral values are closest to Pedra Azul’s on a log scale, using the values both brands publish as single numbers (at least 5). pH and nitrate are not used. Similar minerals do not mean similar taste.

Source & spring

Source	Marechal Floriano, Espírito Santo, Brazil (BR-262 km 69.5)
Country	Brazil · all waters from Brazil
Water type	Natural mineral water · what this means
Still or sparkling	Still
Data source	aguapedraazul.com.br, Nossa Água: physical-chemical characteristics and chemical composition (no analysis date given) Last checked 2026-10-26

Brands update their analyses from time to time, and values can differ between bottle sizes, plants and batches. Check the label on your bottle. Spotted a change? See corrections.

Where to buy

See the official Pedra Azul website for stockists. Retailer and price links are coming later.

Compare Pedra Azul with

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.