Ecological Systems and Devices Annotation << Back The problem of influence the sewage on a Ob`s and Taz`s reservoirs condition Kuz’mina I.Yu., Litvinova O.V., Skvortsova S.G., Kudasheva F.Н. This article presents hydrologycally and hydrochemically extremely unlearned reservoirs of Ob`s and Taz`s bays. It based on the observation of the quality and chemical composition of the sewage and reservoirs`s waters. In spite of the quality improvement of the sewage in a number of the chemical qualitative indices we had to point out that the reservoirs are influ-ential of the sewage disposal dropping.