Removing contamination from the soil is expensive. For this reason, the Capital Region is working together with companies and researchers to develop new methods. One promising method is to run a low electrical voltage through contaminated boulder clay, add “bacteria food” (reactants) and bacteria to eat the contamination. This method uses up to 25% less energy than the existing methods and removes 99% of the contamination. Through to 2016, interested parties will be able to see the technology in use in a pond near Frederikssund.