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Original Articles

Impact of small dam’s construction on groundwater quality and level using water quality index (WQI) and GIS: Nagarparkar area of Sindh, Pakistan

, ORCID Icon, , ORCID Icon, &
Pages 2586-2607 | Received 19 Jul 2019, Accepted 27 Sep 2019, Published online: 22 Nov 2019
 

Abstract

The study was conducted in Nagarparker area, Thar, Pakistan to assess the small dam’s impact on groundwater quality for domestic use and water level variance in wells during pre and post-monsoon periods. The water samples collected from various locations of the study area were analyzed for twenty physicochemical parameters and their appropriateness was assessed using the water quality index (WQI) and geographicinformationsystem (GIS) techniques. The results revealed that groundwater level increased from 15-25 ft near the dams and 8-14 ft away from the dam after rainfall, a minor change was observed in the concentration of chemical and trace elements. Physico-chemical parameters analysis indicated that the concentrations of the 40% parameters (pH, SO4, Fe, CU, Mn, Zn, As and fluoride) were within the World Health Organization (WHO) guidelines, whereas 60% exceeded the thresholds. The WQI revealed that the quality of only 20% of the water samples was excellent, 25% good, 15% poor, 15% very poor and 25% unsuitable for drinking purposes. The spread of water related diseases in the area also indicated the groundwater contamination. Overall, the quality of water is poor to unsuitable for drinking purposes. Thus, such water should be treated properly before use to avoid toxic and hazardous effects on human health.

Acknowledgment

We are grateful to Dr. Rick Bereit and Dr. Forster, Professors, The University of Utah (UU), United States of America (USA) for their useful suggestions regarding the improvement of the original copy. We additionally acknowledge positive and productive remarks and proposals of the mysterious commentators.

Disclaimer

No potential conflict of interest was reported by the authors.

Additional information

Funding

We offer our thanks to the U.S.- Pakistan Centers for Advanced Studies in Water, Mehran University of Engineering and Technology, Jamshoro, Pakistan for financing this research work.

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