Abstract
In this study, various water quality parameters have been selected and examined. Weighted Arithmetic Index (WAI) method used to calculate Water Quality Index (WQI). Besides, a statistical model for WQI prediction was proposed to test the correlation between WQI, Acidity (pH), Turbidity (T), Total Dissolved-Solids (TDS), Total Suspended-Solids (TSS), and Electricalconductivity (Ec). The study was conducted in Kirkuk, north of Iraq. The results of laboratory tests showed that the quality of drinking water that is processed from Kirkuk water project K1 is within the Iraqi specifications, except in one characteristic (Turbidity). The calculated WQI ranged between 67.37-109.92. Water Quality (WQ) was within good and poor water. For the predicted model, an accuracy value was calculated by the regression process. The obtained regression coefficient value R2 was equal to 0.99. The results demonstrated that the features obtained by regression analysis are able to predicate the WQI with very high accuracy.
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