Investigation of the infection rate of carp fish infected by cat liver fluke larvae in the Dnieper River within the Dnipropetrovsk city was carried out. In a parallel way we collected the helminth carriers – molluscs Bіthinia inflata in the inundated reservoirs. The helminths larvae in fish and molluscs were not found. That can testify to the absence of threat of opisthorchiasis to the city inhabitants.