The Czech Republic has one of the highest rates of methamphetamine consumption in Europe, according to a study carried out for the journal Addiction and published on Tuesday. Prague’s waste water showed the strongest traces of methamphetamine in a comparison involving 42 European cities. Another Czech city, České Budějovice, placed second in the study. Prague was ranked 14th in terms of the amount of THC, which is found in cannabis, in its waste water, and 15th with regard to traces of ecstasy. Methamphetamine is known locally in the Czech Republic as pervitin.