2012), through intense urbanization, that produces domestic effluents and agricultural activity via animal husbandry or the use of manure and slurry as natural fertilizer ( Seiler et al. The cost of drilling being important ( World Bank 2007), the determination of the factors influencing the bacteriological quality of groundwater is useful in the perspective of avoiding financial waste and providing more rationale to the feasibility studies.īacteriological pollution of groundwater is generally due to the presence of fecal contamination bacteria indicators, originating mostly from humans or animals ( Koffi-Nevry et al. Groundwater destined for bottling is subject to rigorous bacteriological control before putting it in the market ( Ministry of Water Resources 2006). Taking into consideration its impact on public health and the economic sector, it is important to assess and monitor the groundwater quality, with focus on the bacteriological quality for the prevention against waterborne disease. Groundwater provides 63% of the total water demand in the Northern region and 96% of the water demand in the Sahara region ( FAO 2009). Its total potential is estimated 2.7 billion m³ in the Atlas northern region and 5 billion m³ in the southern region of the Sahara ( Chabour et al. The total production comes from groundwater. These findings are useful to avoid drill costs and to take the best strategy to protect groundwaters.Īlgerian bottled water demand is increasing ( Hazzab 2010). The performed logistic regression model showed that the presence of urbanization or agricultural activity multiplies significantly ( P < 0.001) the risk by 7 of being a poor bacteriological quality groundwater. Bacteriological quality was strongly and negatively correlated with urbanization and/or agricultural activity parameter ( r = −0.454). coli were the major sources of contamination with respectively 35 and 24 contaminated samples, followed in order by Pseudomonas aeruginosa, enterococci and sulfite reducing anaerobic bacteria spores with respectively 8, 7 and 2 contaminated samples. The bacteriological analysis highlighted that 37 of the 73 groundwater samples (51%) were of poor bacteriological quality while 36 of them (49%) were of good bacteriological quality. There should be no bacteria growth for each bacteriological parameter to qualify the groundwater of good bacteriological quality.
#Xlstat 2014.5.03 older version iso
The analysis was performed in accordance to ISO standards methods. A total of 73 groundwater boreholes were sampled and analyzed for the required bacteriological parameters. The aim of this study is to determine the bacteriological quality of groundwater that serves bottled water production. Groundwater from boreholes is the major source of bottled water in Algeria.
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