Rubbish and packaging thrown away (10 tonnes) is the second main source of plastic trash in the lake – around 10 tonnes a year – followed by plastics used in construction work (3.3 tonnes), and particles from textiles (2.2 tonnes), paint (0.9 tonnes) and cosmetics (0.7 tonnes).
The study, led by Julien Boucher, together with the Federal Institute of Technology in Lausanne (EPFL), estimates that 99% of the plastic that ends up in the lake are dropped as litter and particles washed away via gutters, ditches and drains. Only one tenth of the plastic that is thrown or flushed into the lake is evacuated via the Rhône River, near Geneva.
According to tests, most of the plastic waste appears to accumulate in sediment at the bottom of the lake and very little is broken down even on the surface. Sizeable amounts of plastic waste are absorbed by fauna, especially birds and fish.
To combat the problem of plastic waste, the ASL is urging large companies to limit the amount of plastic used especially in packaging, and for consumers to favour reusable materials and containers.
A study published earlier this year found that plastic waste washed up from Lake Geneva had hazardous levels of bromine and cadmium that presented a clear threat to wildlife. Researchers also detected high concentrations of mercury and lead among the litter.
More
More
Nestlé ranked among top plastic polluters worldwide
This content was published on
Coca-Cola, PepsiCo and the Swiss food giant Nestlé are the world’s biggest producers of plastic waste, according to an indicative study by Greenpeace.
Demonstrators in Swiss capital demand better access to mental health care
This content was published on
Thousands of people demonstrated in Berne on Saturday afternoon against long waiting lists, the lack of therapy places and the absence of a clear pricing structure.
This content was published on
Swiss companies' expectations for salary growth are down by 0.3 percentage points compared to a year ago, according to a survey conducted by the Center for Economic Research (KOF).
One Swiss national killed in plane accident in southern France
This content was published on
A Swiss national was killed alongside a German national in a crash involving two light aircraft on Saturday afternoon in Saint-Pons, south-eastern France.
Over 6,000 apprenticeships remain unfilled in Switzerland
This content was published on
By mid-August, which is the start of the Swiss school year, some 6,400 apprenticeship vacancies remain, mainly in the construction, catering and machinery industries.
Japanese film Tabi to Hibi wins Golden Leopard at Locarno
This content was published on
The Japanese film Tabi to Hibi by director Sho Miyake won the Golden Leopard, the top prize in the international competition, on the final day of the Locarno Festival.
Switzerland could produce up to 5Mt of emissions annually by 2050
This content was published on
Two to five megatonnes of CO2 equivalents per year: this is the amount of greenhouse gas emissions that Switzerland is still expected to produce annually in 2050, a new study shows.
US tariffs putting 100,000 jobs at risk in Switzerland
This content was published on
US tariffs of 39% on Swiss imports will directly affect 100,000 jobs, mainly in the watchmaking, machinery, metals, and food industries, economiesuisse warns.
This content was published on
Switzerland has released CHF4 million (nearly $5 million) to help Sudan, which has been severely affected by famine and cholera.
Switzerland rejects new Israeli settlements in Palestinian territory
This content was published on
Switzerland says it rejects the announced construction of thousands of housing units in the Israeli-occupied Palestinian West Bank.
Larry Finck and André Hoffmann named interim co-chairs of WEF board
This content was published on
The WEF also revealed an investigation commissioned by the board has cleared its founder Klaus Schwab and his wife of accusations made by anonymous whistleblowers.
This content was published on
Switzerland has an international reputation for cleanliness and pristine landscape, but a team of scientists from the University of Geneva and Britain has revealed that the lake is as susceptible to plastic waste problems as the ocean. The team analysed 3,000 objects, such as toys, pens, cotton swabs, food packaging and fragments of foam and…
This content was published on
The research, carried out by scientists from Lausanne’s Federal Institute of Technology (EPFL) and commissioned by the Federal Office for the Environment, found that the concentrations present in the lakes did not pose a direct threat to the environment and quality of drinking water inside Switzerland. “But these are not natural particles and they don’t…
Rhine has one of highest concentrations of microplastics
This content was published on
The River Rhine flowing between the cities of Basel and Rotterdam has one of the highest concentrations of microplastics in the world, according to a study by researchers from the University of Basel.
You can find an overview of ongoing debates with our journalists here . Please join us!
If you want to start a conversation about a topic raised in this article or want to report factual errors, email us at english@swissinfo.ch.