There's an excellent analysis of the water privatization debate in LiP Magazine that starts with our own problems with Nestle/Perrier/Ice Mountain megacorporation in Mecosta County, Michigan and then compares it with other communities in the US, Central and South America. Take the link to LiP then scroll down through the Features section.
This is a global problem and it will take a global solution. Water rights activists must begin to band together internationally. Water is a right, not a privilege.