Fluoride health hazard assessment in ground water resources of Tiruchirappalli district, Tamil Nadu

Hydrogeochemistry of the groundwater is controlled by rock-water interaction was characterized using Gibbs plot. The groundwater in the study area is dominated by HCO₃⁻ and Na+ facies character with alkaline nature. The correlation technique has been used to understand the relationship between chemical parameters. The adversative health effect by in taking fluoride contaminated groundwater by humans including male, female and children are the major concern in this study by using secondary data. Among all the samples, seven samples were recorded above the permissible limit of fluoride during the post-monsoon season. Oral intake of fluoride and total hazard index resulted in 15 per cent of children in pre-monsoon and 13 per cent of male, female and children during the post-monsoon season were categorized under fluoride risk. Dermal intake of fluoride is normal in all the samples studied.