Animals
No one is accusing humans of intentionally injuring animals, but what is one of the most frequent items discovered in drains? Animals. This is not limited to the United Kingdom; it occurs all over the globe. Not only tiny animals like cats and dogs but even animals like cows and sheep! Many different creatures have been retrieved unharmed from sewers. In the United States, there have been reports of alligators patrolling the sewers, though most people dismiss this as fiction.
Solid Gold
Sewers are a place for garbage, but not everything that ends up in them is useless. In Japan, for example, staffers at a treatment center received 5 million yen in gold in 2009. They discovered the valuable metal while treating sludge. They used the metal due to the vast number of precision equipment manufacturers in the region. They discovered 1,890 grams of gold in every ton of rubbish!