Three water springs were selected in the western part of the city of Mosul (AinQana belongs to Al-Ayadiyah sub-district, Ain Abu Maria village, and AinSubashi in the center of Tal Afar district) to study some physical and chemical characteristics (temperature, electrical conductivity, acidic function, as well as negative and positive ions) and the biological characteristics of algae. The results of the study showed that the change in water temperature was little during the study period, and the highest value of the electrical connection reached (2557, 2488, and 1817) microsiemens / cm in Subashi, Qana, and Abu Maria sites, respectively. Whereas, the average dissolved oxygen concentration ranged between (0.0 to 3.6) mg / L at Qana and Subashi sites respectively. The total basal values ranged between (128) mg / L as CaCO3 at the site of Qana and (154) mg / L as CaCO3 at the site of Subashi. The results showed that the sodium concentration values were greater than the potassium concentration values in the three sites. Sixteen species of algae that belong to the algae section were diagnosed as bluish-green algae, green algae, and red algae. Oscillatoria was diagnosed in AinQana and the absence of the species belonging to the two algae sections, green and red algae in AinQana.
Keywords: Groundwater, Electrical conductivity. WQI