sentences:  The State General Laboratory and the Department of Hygiene and Epidemiology, University of Ioannina, Ioannina Region notified the results of analysis of samples from lake Pamvotis in order to ascertain the reasons that led to the death of a host of fish.As revealed by the results, the lake is impaired by pollutants from sewage, which significantly exceed permissible limits.According to what was said by the Head of State General Laboratory Department of Ioannina Anastasios Tsongas, the effluent is the same quality as those that led to biological treatment, with the difference being that these were channeled directly to the lake.