from 2003:
Mustard gas and cyanide have been found in river water in the Iraqi city of Nasiriya, coalition forces said yesterday. The poisonous substances are believed to have been dumped in the Euphrates either by Iraqi soldiers fleeing from U.S. troops or by local factories that produced weapons of mass destruction.
A spokesman for the U.S. marines, based outside the city, described the quantities of chemical agents found as “significant†and claimed that it was further evidence that Saddam Hussein has produced weapons of mass destruction. The poisons were discovered by the marines’ scientists who were testing the quality of water taken from the Euphrates before purifying it and distributing it to the residents of Nasiriya, a city of 250,000 people.