Discriminant Analysis (DA) for Surface Water Quality Assessment

Zainb Abd alelah  Abd Alateef; Fatma Abd Alemam  Jyad; Maha Atta  Faroon; Ahmed Naseh Ahmed Hamdan

doi:10.30572/2018/kje/170310

Authors

Zainb Abd alelah Abd Alateef Department of Civil Engineering, College of Engineering, University of Basrah, Basrah, Iraq
Fatma Abd Alemam Jyad Department of Civil Engineering, College of Engineering, University of Basrah, Basrah, Iraq
Maha Atta Faroon Department of Civil Engineering, College of Engineering, University of Basrah, Basrah, Iraq
Ahmed Naseh Ahmed Hamdan Department of Civil Engineering, College of Engineering, University of Basrah, Basrah, Iraq https://orcid.org/0000-0001-6871-7049

DOI:

https://doi.org/10.30572/2018/kje/170310

Keywords:

Discriminant analysis (da), hydro-chemical variables, pollutants

Abstract

This study evaluated the quality of surface drinking water using ten hydro-chemical variables at three stations on the shatt al arab river. A water quality index (wqi) was established, with values ranging from poor to unsuitable for the three stations. Statistical data revealed that all parameters at st1 and st3 were outside the standard limits. Furthermore, na+ > ca+2 > mg+2 > k+ were found for all three stations. Pumping specific amounts of water from the al-badaa canal for specific periods of time improved water quality, but it remained unfit for human consumption. The variables primarily responsible for spatial variation were identified using a discriminant analysis (da) approach. Sulfate, magnesium, calcium, and alkalinity were found to be the most significant characteristics that characterized different locations and contributed to spatial variations in surface water quality. The results of this study provide decision makers with useful information to address the important issue of water quality management and protection

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