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The aim of our study was to determine fluorides (F-) content in the well water consumed as drinking water by some Moroccan populations in rural areas. All samples were collected between April and October 2011. Measurements were performed by an ion selective electrode. Thirty wells spread to cover most of the country and locally chosen based on the number of inhabitants who consume its water. All wells were in rural areas. The mean (+/- SD) of F- was 1.84 +/- 1.6 mg/L with a range from 0.42 to 8.95 mg/L Concentrations of F- in phosphate regions were higher than those found in other regions. More than half of the samples exceeded the current standard. Our study showed that water of some Moroccan regions is naturally rich in F-exposing people who consume it at high risk of fluorosis.

This study aimed to analyze the fluoride concentration in tap drinking water in different cities of Morocco using an electrochemical ion-selective method. Three samples were collected from each thirteen selected cities in the period between March and May 2011. The median value of fluoride was 0.94 mg/L (0.21-2.97). High fluoride concentrations (>0.8 mg/L) were found in sixteen cities. Very high values were found in phosphate regions such as Khouribga which is known to be an endemic dental fluorosis area. This study has shown that the concentration of fluoride in drinking water exceeds the limit especially in phosphate regions.