Zabrat Lake – it is a small lake in Absheron located in a tense ecological condition. Zabrat lake is situated at the Absheron Peninsula in Sabunchu region of Baku city. Wastewater is disembarked from household, other facilities and private houses which are built around the lake and not equipped with the sewerage systems in the Sabunchu district of the city. At present 8000 m3 of payable and household water is supplied into the lake from various sources every day. One of the main sources of the lake pollution is the household waste dump in the Zabrat district in the Sabunchu region in the eastern part of the lake. The main source of the pollution of Zabrat lake was the discharge of household wastewater. In accordance with the mineralization of water, Zabrat lake belongs to the group of salt-water is much higher than that of others. The oxygen regime of the lake is completely disrupted. One of the basic reasons of soluble oxygen‘s weakness in the water of Zabrat lake is the acceleration of biological processes as a result of ghe oxidation of pollutants. For this reason the biochemical oxygen consumption in Zabrat lake is much higher. Since the 1970s, fecal, domestic wastewater has been discharged through the open channels without a purification process into the lake which seriously worsened the sanitary state of Zabrat, the bottom of the lake and the coastline are polluted with the household waste. Due to the evaporation of waste in hot weather, light fractions of organic waste waste are released into the atmosphere and cause a pungent odor. As a result of the influence of natural factors and wastewater into the lake, the concentration of cations and anions in the water also sharply rises with an increase in the mineralization of Zabrat lake. Cu, Cd, Fe, Zn, Mn and other heavy metals are the main pollutants of Zabrat lake and exceed the MPC by several times. Along with the wastewater, synthetic surfactants enter the lake water. Synthetic surfactants contain sodium polyphosphates in which detergents are dissolved, as well as a number of additional ingredients that are toxic to aquatic organisms: fragrances, bleaching agents (persulfates, perborates), soda ash, carboxymethyl cellulose, sodium silicates. Changes in the level of the Caspian Sea also affect the ecological conditions of the lake and its hydrological regime. As the sea level rises, the water table also increases, and as a result, the amount of water in the lake increases. When the sea level drops, the opposite process occurs. A state program for the socio-economic development of the city of Baku and its settlements for 2014-2016 has been prepared, approved by the order of the President of Azerbaijan I. G. Aliyev dated January 17, 2014, a project for environmental rehabilitation has been developed to improve, protect and use the lakes of the Absheron Peninsula. The project of ecological rehabilitation of the lake will be implemented in two stages. Work is underway at the present time, and the results are good. At the same time, serious work has been organized to ensure safety, the protection zone of the lake and the prevention of pollution of the lake and coastal areas from household and construction waste.