Sewer Divers takes audiences on a journey through the outdated, centuries old sewer systems in key cities across the U.S. that are maintained by the brave workers who do the job most people wouldn't ...

Mexican sewer diver Julio Cu Camara, 52, is lowered down in a cage during a dive at the city's drainage system plant in Mexico City March 21, 2013. Cu Camara's job involves diving in the city's sewage ...

In North Jersey, N.J. Dirty Water Don dives into a toxic sewer line. In Mt. Vernon, VA. Ramone and George try to fix a sewage-filled basement. In Cleveland, Josh tries to break down a rock-solid ...

MEXICO CITY — Deep below the streets of Mexico City, Julio Cesar Cu is hard at work swimming in dark sewer waters in a diving helmet and dry suit, surrounded by rats, feces and condoms. It's a dirty ...

A down-and-dirty, up-close look at the rugged, blue-collar heroes that keep America's centuries-old sewer systems running so the rest of us can stay out of the muck and the mire.