Supermarkets where beer costs less than water

Amidst the World Cup frenzy - when supermarkets are falling over themselves to offer cheap deals on lager - an investigation has uncovered three supermarkets where lager is on sale for less than the price of mineral water. The price of the booze conforms to the government's rules which are supposed to prevent the sale of incredibly cheap alcohol.

So what's going wrong - and why is it so concerning?

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