Hydrochemical Evaluation of Groundwater from Selected Wells in Al Muthana Governorate, Southern Iraq

  • Raad Al- Khafaji Department of Biology, College of Education for Pure sciences (Ibn Al-Haitham), University of Baghdad, Baghdad, Iraq
  • Saad Muhi Department of Geology, College of Science, University of Baghdad, Baghdad, Iraq
  • Adnan Jassam Department of Biology, College of Education, Iraqia University, Baghdad, Iraq
Keywords: Water type, groundwater, irrigation water, chemical formula

Abstract

The study area is part of the city of Samawa in Al Muthanna Governorate in southern Iraq. The study  area is located to the west of Samawa city bounded by the north latitudes 31⁰11'-31o42' and east longitudes 44o58'- 45⁰16'and its groundwater resources are developed for supply and irrigation purposes. In order to evaluate the quality of groundwater in the study area, twenty three groundwater samples were collected and analyzed for physical and chemical parameters. Hydrochemical analysis showed that the groundwater of the study area is excessively mineralized  and very hard. The increase in flow length of groundwater in the study area caused a change in water quality from bicarbonate to sulfate and chloride. The abundance of the major ions is as follows: SO4> CL>HCO3>NO3and Na>Ca>Mg>K. The dominant type  of groundwater is Na+- sulfate. The water of the  studied wells is not suitable for human drinking. Depending on TDS and EC values, most samples of the water are moderate saline class for irrigation. Most wells are good to permissible (wells No.4,14,17) and doubtful (well No. 12) for irrigation depending on Na%, while unsuitable for irrigation depending on EC  (except well No. 17 which is  permissible). Excellent water class (S1)for agriculture was recorded depending on SAR, except for well N0.2 which had an a good class (S2).

Published
2021-07-01
How to Cite
Al- Khafaji, R., Muhi, S., & Jassam, A. (2021). Hydrochemical Evaluation of Groundwater from Selected Wells in Al Muthana Governorate, Southern Iraq. Iraqi Journal of Science, 62(6), 1930-1942. https://doi.org/10.24996/ijs.2021.62.6.18
Section
Geology