The German institution selected 14 brands of beer popular in the country, including Paulaner, Hasseroeder, Erdinger and Franziskaner, to search for traces of glyphosate, a chemical agent used to kill weeds.
"Tests of all the beer brands were successful… the highest [glyphosate] level was 29.74 micrograms per liter that is almost 300 times above the drinking water limit. Even the smallest measured level was still five times above the limit for drinking water," the report published on Thursday reads.
It was noted in the report that because these 14 popular beers were found to contain glyphosate, it can be assumed some less widespread beer brands might also contain harmful levels of the chemical agent.
In March, the International Agency for Research on Cancer released a report, which concluded that glyphosate was a "possible human carcinogen" and could be treated as a dangerous substance. The conclusions were based on epidemiological studies, animal studies, and studies of cell tissue.