The French government on Thursday ordered an investigation into the water table around all of France’s 58 nuclear reactors in an effort to dispel fears raised by a leak from a treatment plant run by Areva in southern France.

Jean-Louis Borloo, ecology minister, has asked an independent committee to carry out the probe to stem mounting public concern over nuclear waste management after a low-grade leak at the Socatri treatment plant at Tricastin focused public attention on a still unexplained, older contamination of the water table.