Researchers have found that 3 million dollars worth of gold lands in Switzerland’s sewage system every year. After taking a close look at Swiss waste-water treatment plants, they claim that over a hundred pounds of gold and 6,000 pounds of silver are washed away with waste. However, it would be too expensive to remove the gold from the wasted water.
Switzerland is a country that processes and refines gold on a large scale. About 70% of the world’s most precious metal passes through Switzerland in some way or other. Gold is used especially in the country’s watchmaking industry, which dominates the world market.
Other valuable metals pass through the country’ sewage system, but they do not pose an environmental threat.
Most of the refineries lie in the southern canton Ticino, only a short distance from the Italian border.
- border = line between two countries
- canton = province of Switzerland
- claim = to say that something is true
- dominate = to be number one
- environmental threat = danger to the world around us
- especially = above all
- pose = cause a problem
- precious = very valuable
- on a large scale = here: large factories refine large amounts
- refine = here: to make gold purer
- remove = take something away
- researcher = person who studies a subject in order to find out more about it
- sewage system = a place where waste water from households is collected; the water is cleaned and returned into rivers or the sea
- valuable = expensive
- waste-water treatment plants = place where waste water from households is cleaned from unusable material
- waste = unwanted material that we do not need