Still or sparkling? Coconut or tree sap?

LIFE 69p for 500ml ‘UNTOUCHED by man before it is bottled.’ For every litre bought, Life funds at least a litre of clean drinking water in the developing world.

blk. £6 for 500ml THIS ‘alkaline mineral water’ is infused with distinctive black ‘fulvic trace minerals’.

UGLY £1.15 for 330ml SPARKLING water ‘infused with natural fruit flavours’ because, the makers say, ‘you’re sweet enough already!’ Comes in lemon and lime or grapefruit and pineapple flavour.

COCO ZUMI £2.25 for 330ml THE ‘100% pure’ and ethically sourced juice comes from a ‘tender young green coconut’. Crucially, green coconuts have the lowest calorie content of all

natural juices.

PLENISH+ £2.50 for 330ml WATER flavoured with fruit juice and ‘bioactive cultures for cleansing and sugarfree hydration’.

SIBBERI BIRCH WATER £2.25 for 250ml ‘A DIVINE, all-natural alternative to water’ made from coldpressed birch tree sap. According to Sibberi, it has ‘a subtle aftertaste of forest’.

BUDDHA WATER £1.89 for 250ml A SPARKLING drink made from ‘pure organic’ birch sap. It claims to help with weight loss, eliminate cellulite and improve cholesterol.

GLACEAU SMARTWATER 57p for 600ml THIS is ‘vapour-distilled’ to remove minerals and impurities, then ‘remineralised’ with electrolytes. But experts have dismissed Coca-Cola’s product as no better than tap water.