Groundwater Quality Assessment using Water Quality Index (WQI) in Liaquatabad Town, Karachi, Pakistan

Adnan Khan*, Yusra Rehman

Department of Geology, University of Karachi, 75270, Karachi, Pakistan

* Corresponding author E-mail: adkhan@uok.edu.pk

Abstract: The aim of present study is to evaluate the groundwater quality of Liaquatabad Town using water quality index (WQI) measured through physico-chemical parameters. For this purpose, groundwater samples (n = 31) were randomly collected through boring wells from various sites of study area. Data revealed that TDS content of groundwater is very high (mean: 1045.55 mg/L) which is double the WHO limit for drinking purpose. Elevated concentration of Ca, Na, Cl, and HCO3 is reported in 85%, 33%, 40% and 70% wells respectively which are exceeding the corresponding WHO guideline for drinking purpose. Very high concentration of these major ions (Ca, Na, Cl, and HCO3) is indicative of sewage mixing with groundwater in Liaquatabad. The calculated value of water quality index (WQI = 66.1) shows that groundwater in Liaquatabad town is not suitable for drinking purpose but can be used for industrial and irrigation purpose.

Key words: Groundwater, quality, water quality index, Liaquatabad town.

 

 

International Journal of Ground Sediment & Water

ISSN: 2372-0743 (print) ISSN: 2373-2989 (on line)

Journal Website: http://ijgsw.comze.com

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