The head of the Environmental Protection Agency (EPA) is admitting the toxic sludge released into the Animas River by an EPA work crew is going to pollute rivers all the way into Mexico.

EPA Administrator Gina McCarthy admitted waters will be polluted into Utah, New Mexico, the Navajo Nation reservation and into Mexico.  McCarthy said at a press conference they would use the “full breadth of the agency” to try and clean up their spill.

“We’re working around the clock,” McCarthy said. “It pains me to no end to see this happening.”

While they admitted they are the source of the leak, EPA official say they still don’t know exactly what happened to cause the toxic waste to reach the river.

“We’ve launched an independent investigation to see what happened, and we’ll be taking steps to ensure that something like this doesn’t happen again,” Shaun McGrath, the EPA administrator in charge of the region, told reporters on Monday.

Officials said the Animas River and the San Jan River into which the Animas feeds will be closed to the public at least until August 17th because of the toxic metals in the water.   Durango, Colorado and the New Mexico cities of Aztec and Farmington have been forced to shut off their river intakes for resident water supplies.

The EPA workers also admitted that many of the heavy metals will sink into the sediment of the rivers and could be stirred up when a major storm hits the region causing flooding or increased water flow.

Claims are now being made against the EPA by local residents who have suffered hardship because of the spill.  Under federal law, the EPA is financially responsible for damaged caused by any mistakes made in clean up of toxic sites.