"Martin Wagner and his colleague, Jorg Oehlmann, from the Goethe University Frankfurt, in conjunction with a team of researchers from the German Federal Institute of Hydrology, learned this after conducting tests on 18 different bottled water products to look for the presence of EDCs. Using an advanced combination of bioassay work and high-resolution mass spectrometry, the team identified some 24,520 different chemicals present in the tested water."