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Groundwater quality index of Upper Athi River Basin in Kenya

Author

Listed:
  • Ebenezer Ashun
  • Kenneth J. Bansah

Abstract

Groundwater is a major source of drinking water in communities located within three sub-catchment areas of Upper Athi River Basin in Kenya. Water samples were collected from 36 different shallow wells and boreholes located in these communities and subjected to physicochemical analysis. Water quality parameters analysed included pH, electrical conductivity, turbidity, total dissolved solids, alkalinity, hardness, nitrate, fluoride, phosphate, sulphate, chloride, potassium, sodium, calcium, magnesium, iron, manganese and zinc. Levels (or concentrations) of these parameters were used to evaluate water quality index (WQI) of the groundwater. WQI values ranged from 115 to 778 with mean WQI of 234. Groundwater in the area is observed to be poor in quality and requires treatment before use. High WQI values were largely attributed to high concentrations of iron, manganese, turbidity, nitrate and chloride.

Suggested Citation

  • Ebenezer Ashun & Kenneth J. Bansah, 2017. "Groundwater quality index of Upper Athi River Basin in Kenya," International Journal of Global Environmental Issues, Inderscience Enterprises Ltd, vol. 16(4), pages 217-230.
    • Handle: RePEc:ids:ijgenv:v:16:y:2017:i:4:p:217-230
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