While the drinks are said to have health benefits, some brands contain more than a day’s recommended intake of sugar in a single 300ml serving.
The Local Government Association, which represents councils that are responsible for public health, accused soft drink firms of ‘dragging their heels’ when it comes to minimizing sugar in their products.
It said children under the age of ten get almost a fifth of their sugar intake from soft drinks.
In a survey, the organization found that some cans of fizzy drinks contain almost twice the recommended daily sugar limit for adults.
Even some fruit juices contain more than a single day’s limit in a single serving – surpassing a can of Coca-Cola.
Ocean Spray Cranberry Classic juice drink was found to have 11g of sugar per 100ml, while PomeGreat ‘Super Juice’ had 12.1g.
Both exceed the 10.6g per 100ml in a can of Coca-Cola – but do not come close to the 15.1g per 100ml in Old Jamaica Ginger Beer.
Councillor Izzi Seccombe, Tory leader of Warwickshire county council and chairman of the LGA’s Community Wellbeing Board, said: ‘It is wholly unacceptable for one normal-sized can of soft drink to contain double the recommended daily limit.
A spokesman for Ocean Spray said cranberries are naturally low in sugar, so sweetening is required.
She added: ‘We offer consumers a range of reduced sugar options including our Cranberry Classic Light product