Today, most of the environmental pollution problems are water pollution and wastewater. Wastewater is the most important factor of environmental pollution in wastewater, rivers, lakes, seas and groundwater. Wastewater contains many biological and chemical substances that harm the health of humans and living things. Heavy metal compounds, radioactive wastes, cyanide, organic and solvents and hydrocarbons are the leading factors that cause pollution in wastewater and thus create environmental pollution. Due to the rapid growth of industrialization, the rapid increase of population, the rise of living standards and the phenomenon of urbanization, large amounts of wastewater are generated in city centers, industrial facilities and agricultural activities.

Heavy metals and compounds are the major contributors to this process. Heavy metals and compounds that cause inorganic contamination of wastewater leave living things under significant environmental toxic effects. These effects may lead to accumulation and accumulation of food chains, acute and chronic poisoning and death in living organisms, damage to fish eggs and decrease in fish species.

Arsenic, lead, copper, zinc, cadmium, barium, iron, mercury, silver, nickel, chlorine, chromium, tin, boron, manganese, antimony, aluminum, molybdenum and thallium are the leading metals.

Mainly heavy metals are present in low concentrations in natural and deteriorated systems and when they reach certain concentrations, they create poisoning effects in living organisms. The poisoning effects of heavy metals vary according to the functions of living organisms. The most harmful heavy metals known are mercury, lead and cadmium. Metals that enter into living bodies accumulate differently in organs and tissues. For example, ionic metal contaminants act by binding to proteins in the cell. Lead leads to poisoning by affecting the functions of enzymes.

Heavy metal analyzes are also carried out in authorized laboratories within the scope of water and wastewater measurements.