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Human impact of septic tank effluent on groundwater quality in the rural area of Ain Soltane (Ain Defla), Algieria

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  • Bouderbala Abdelkader

    (Department of Earth Sciences, University of Khemis Miliana, Road of Thniet El-Had. Ain Defla 44225, Algeria)

Abstract

The impact of individual septic tank effluent on groundwater quality was investigated in the rural area of the Ain Soltane municipality in Algeria. This area has an important number of individual septic tanks, and it is devoid of a drinking water supply and sewerage systems. The septic tank is a pre-treatment solution of sewage by bacteria living without oxygen (anaerobic). The alluvial aquifer in this area is covered by a layer of good permeability on the surface, which can pollute groundwater by vertical transport of pollutants through the soil, including microbial contamination. Groundwater samples were collected from 33 wells in the dry period of 2016. The monitoring of groundwater quality has shown a significant degree of organic and inorganic pollution in the majority of wells, with very high concentrations of sulphate and chloride exceeding 450 mg/l and 250 mg/l respectively. The analyzes also show the presence of bacterial germs in the groundwater of which the origin is faecal (faecal coliform densities are above 10 organisms per 100 ml, and the Total Streptococcus is more than 240 colonies per 100 ml). Monitoring confirms the contamination of these wells from septic tanks and that it was moving into groundwater, which makes it unfit for drinking due to the pathogenic germs. This poses a major problem for public health. This study has identified the effects of septic tank effluent on groundwater quality in this area.

Suggested Citation

  • Bouderbala Abdelkader, 2019. "Human impact of septic tank effluent on groundwater quality in the rural area of Ain Soltane (Ain Defla), Algieria," Environmental & Socio-economic Studies, Sciendo, vol. 7(2), pages 1-9, June.
    • Handle: RePEc:vrs:enviro:v:7:y:2019:i:2:p:1-9:n:1
    DOI: 10.2478/environ-2019-0007
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    References listed on IDEAS

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    1. K. Brindha & L. Elango, 2012. "Impact of Tanning Industries on Groundwater Quality near a Metropolitan City in India," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 26(6), pages 1747-1761, April.
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