Sewer Diver Loves His Job | National Geographic

What is a major problem faced by the sewer system in Mexico City?

• Lack of sufficient water flow.

• Frequent blockages caused by waste.

• Too few sewer lines for the city's size.

• The sewers are too shallow.

Why did Carlos Barrios decide to become a sewer diver?

• He was offered a much higher salary.

• He wanted to explore underwater caves.

• He was bored with his previous office job.

• He was forced to change careers.

What are some of the health risks associated with diving in Mexico City's sewers?

• Exposure to extreme cold temperatures.

• Attacks from large aquatic animals.

• Infections from bacteria like tetanus and cholera.

• Getting lost in the vast network of tunnels.

What object caused the mysterious blockage at the Ecatepec pumping plant?

• A large pile of plastic bottles.

• A rusty wheel from an old sewage pump.

• A broken piece of a subway train.

• A dead animal.