My new friend, George, and I were talking about identifying the world’s most polluted river. To some extent, the answer may be subjective, because one’s world view may come into play.

Thus, a clean looking river filled with toxic chemicals rendering the water unfit to drink might be viewed as more polluted than the Citarum River in West Java, Indonesia, which the Daily Mail noted back in 2007 may be the world’s worst:

Most Polluted River?

World's Most Polluted River?

As the article states,

So dense is the carpet of refuse that the tiny wooden fishing craft which float through it are the only clue to the presence of water.  … Their occupants no longer try to fish. It is more profitable to forage for rubbish they can salvage and trade – plastic bottles, broken chair legs, rubber gloves – risking disease for one or two pounds a week if they are lucky.