Cleaning up the Matanza-Riachuelo River in Argentina

The Matanza-Riachuelo River divides Buenos Aires City from the Province of Buenos Aires and runs into the Rio de la Plata which provides drinking water for the million of inhabitants in this region.  Translated, its name means the Slaughter River.
http://en.wikipedia.org/wiki/Matanza_River
For decades the authorities have been attempting to clean up the river, but to no avail.  [...]

Argentina Closes Six Facilities for Polluting River

The Environment Secretariat of Argentina closed a poultry feed maker, a petrochemical company, three metalworking firms and a recylcing center on the contaminated Matanza-Riachuelo River basin.  They previously closed 80 facilities, but most were reopened after correcting violations.  The moves are part of a $1.8 billion cleanup of the river basin ordered by the Argentine [...]