The study, carried out by Lancaster Environment Centre, calculates that PET packaging could be reduced by 84% if consumers made their fizzy drinks from concentrate at home.
Each plastic Sodastream bottle replaces nearly 10 regular bottles, the study said. Switching to Sodastream would cut greenhouse gases by 600 tonnes and water use by 66 billion litres a year, it claimed.
Sodastream marketing director Fiona Hope said: “Packaging prevention, reuse and recycling are vital if we are to create a zero-waste economy.”
But plastic bottle producer APPE dismissed the report’s conclusions as “neither credible or realistic” and based on flawed data.