The Citarum river near the Indonesian capital of Jakarta, displays the abuse that mankind has subjected it to.
Citarum river pollution (West Java, Indonesia)
From the Daily Mail:
More than 500 factories, many of them producing textiles which require chemical treatment, line the banks of the 200-mile river, the largest waterway in West Java, spewing waste into the water.
Where once fishermen cast their nets, now people are foraging for rubbish. Sad story…
Link via Kottke