Varanasi: Groundwater in Varanasi and adjoining areas is contaminated with uranium, according to a study by a group of scientists. The study conducted by G.C. Chowdhary, former Professor at the Geology Department of Banaras Hindu University, and S.K. Agarwal, also a professor of Geology, has shown that the drinking water in the University premises and some other places in the city contains more radioactive uranium than the recommended limit. Samples for the study were collected from 11 tubewells tapping deep aquifers (more than 100 metre deep).