Assessment of the Water Quality of the Tigris River Prior to Treatment and Delivery to Consumers, and the Operational Efficiency of the Unified Yathrib Water Treatment Project

Abstract

The current study was conducted at the General Company for Medical Supplies Industry in Samarra, the study aimed to assess the quality of the Tigris River water prior to treatment and its delivery to consumers, as well as to evaluate the operational efficiency of the Unified Yathrib Water Treatment Plant in Salah Al-Din Governorate. It also aimed to determine the suitability of the treated water and observe monthly and spatial variations during the six-month study period, which extended from August 2024 to the end of January 2025.

The study in cluded the measurement of several physical parameters such as water temperature, turbidity, electrical conductivity, and total dissolved solids (TDS). It also encompassed various chemical properties including pH, dissolved oxygen (DO), biological oxygen demand (BOD), total hardness, calcium Chardness, magnesium hardness, chloride concentration.

The results showed that that water temperature ranged between (14.3-30) degrees Celsius, while turbidity values ranged from (0-24) NTU,electrical conductivity ranged between (390-590) micros/cm, and the dissolved solids levels ranged from (242-280) mg/L. The pH values ranged from (7.8-8.5), The dissolved oxygen concentrations were between (7.5-20) mg/L. and BOD values ranged from (1.7-5.8) mg/L.

Total hardness values were between (95-120) mg/L, calcium hardness between (40-80) mg/L, and magnesium hardness between 15.25 42.7 mg/L. chloride concentrations ranged from (16-30) mg/L.