By Matthew Green
BAGHDAD (Reuters) - Plunging under the olive green surface of the Tigris, worshippers from an obscure sect emerge spurting water from their mouths.
A little way downstream, a torrent of sewage gushes into the river as it flows through the Iraqi capital Baghdad. A stench like rotten eggs wafts through the air.
Described in legend as flowing from a source near the Garden of Eden, the Tigris is now choking with modern-day pollution that researchers say puts millions of Iraqis at risk.
"Basically, it's an open sewer," said Anna Bachmann, an independent U.S. researcher who began sampling water for testing on Sunday. "Everything and anything is getting in the river."
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