[Water pollution and carcinogenic risks].

The main subjects emphasized in this contribution are the following ones: 1 - To investigate the presence of cancerogenic compounds derived directly or by transformations within trophic chains from domestic and industrial effluents. 2 - To evaluate potential cancerogenic health hazards due to polluted a quatic environement. The following substances might be regarded as to be cancerogenic: nitros amins, mycotoxins, complex organic and inorganic compounds and synthetic organicals. Based on epidemiological and epizoonic evidences, as well as human and experimental pathology, the relevant importance of particular group of compounds is evaluated. Presented evaluation is indicating that the water-borne cancerogenesis might be of an important significance. Therefore, the needs for essential increase in relevant research, implemented by advanced methods, which can cope with complexity of ecological processed, are stressed and further efforts recommended.