The Effects Of Sewage Water Upon The Fish Growth In Al-Hamza River

Fish plays an important role as a healthy food source because its contains a lot of nutrients required for growth and better human health, fish needs clean or at least water have little pollutants to growth healthy in the river. This paper studying the impact of four heavy metals ( Cu, pb , and Iron or cadmium ) in sewage water upon fish growth, the type of fish have been chosen is Carp ( Cyprinus Carpio). The study including the physicochemical properties of the water and four heavy metals, samples collected during June-2024 , many heavy metals observed in this study four of them have been chose ( Cu, pb , cadmium and Iron ) the current study revealed that the growth of fish is influenced by the following parameters: water pH, temperature, turbidity , as well as the availability of nitrogen and phosphate compounds and food distribution sources. The study showed that fish in first station were active and healthy due to disappear of sewage water and the river pass throw village in first station, but the second station the fish were weak and smaller due to the presence of an untreated sewage network that was dumped into the river, in addition to a place for washing cars, but the last station fish were better than the second station but not like the first station, the distance between each station is 5 KM .aim of study shown the fish growth in Al- Hamza River including physicochemical parameters measurement in the study stations , finally four heavy metal in the study lab were measured.