Groundwater contamination is mainly associated with anthropogenic inputs (fertilisers, filling station, chemical
industry, menagers waste). Analysis of physicochemical qualities of well water in the Boujniba mining region determines the
concentrations of calcium, phosphates, ammonium, fluorides related to their pollution in groundwater. The calcium, ammonium,
and phosphate contents were determined on 17 samples of well water, fountains, by spectrophotometric methods. The fluorine
contents of the water were analyzed by the potentiometric reference method using the fluorine electrode. Physicochemical
analyses of the calcium, phosphate, ammonium, and fluorine contents of well water for consumption by the population revealed
contents between 80 and 144 mg/l, from 0 to 56.5 mg/l, 0 to 75 mg/l, and 0.02 to 6.39 mg/l, respectively. Phosphate, calcium,
ammonium levels of the different well waters analysed present higher values to standard references. 50% of well water samples'
fluorine levels reveal values above recommended standards for children and adults. High levels of fluoride in drinking water have
repercussions on the onset of dental fluorosis in children. This study plays a vital role in determining the quality and its use for
drinking water supply and the impact on human health. These results make it possible to warn the population of the risk of
developing dental fluorosis by limiting the amount of fluoride ingested by the food consumed and taking hygiene and regular
control measures.
Key words: Fluorine; potentiometer; phosphates; calcium; water; fluorosis, Boujniba mining area.
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