Tau is bottled at source in the Welsh Cambrian Mountains, an area of mudstone, siltstone and sandstone that is protected and organically managed.

Tau still is light and very low in minerals, whilst its sparkling counterpart has very loud bubbles and should be paired with a food with a substantial mouthfeel.

Chic and minimalist, the bottle is inspired by the Welsh verb Tau which means to be silent.

Composition in mg/litre

• pH (at source)  7.2
• Total Dissolved Solids  202
• Calcium 30.5
• Magnesium 12.2
• Sodium 21.4
• Potassium 1.2
• Bicarbonates –
• Sulphates 28
• Chlorides 21
• Nitrates <0.1
• Silica –