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How much gold found in sewage
According to various studies, significant amounts of gold have been found in sewage systems around the world. Here are some estimates:
Switzerland: Researchers evaluated 64 municipal wastewater treatment plants across the country and found:
Over 6,600 pounds of silver and nearly 100 pounds of gold (estimated)
Each year, more than $3 million in gold and silver winds up in Swiss wastewater
Switzerland (alternative estimate): Another study estimated that approximately 95 pounds of gold is flushed through Swiss sewage systems annually
United States: A 2015 study analyzed sewage sludge from a city of 1 million people and found approximately $13 million worth of valuable metals, including gold and silver