the article presents analysis of water samples obtained by research carried out in the lower, middle, upper reaches of the seaside collector of Bukhara region. In addition, as a result of research carried out in the Dengizkul collector between 2020 and 2022, several dominant types of algae were bred in laboratory conditions. The purification of the hydro chemical composition of the water of the Dengizkul collector with the help of algae was achieved.