Solid Gold
While sewers are built to collect waste, not everything that ends up there is worthless. In Japan, for example, staff at a treatment center received 5 million yen in gold in 2009. They were sifting through sludge when they found the precious metal. They were able to use the metal because of the large number of precision equipment manufacturers in the region. They discovered 1,890 grams of gold per ton of garbage!
Luxury Watches
In reality, there is more luck in the sewers than we are aware of. In England, a drain technician named Aaron Large discovered four luxury watches in the drains in 2012. They weren’t regular timepieces. They included a £21,000 Rolex Oyster Perpetual Cosmograph in 18-carat gold, as well as another Rolex and two other high-end bits that he discovered a few days later. The owner of one watch was eventually identified, but the other three were fakes. Despite this, Aaron received a bonus from his boss for his efforts.