FLUORIDE CONCENTRATION IN PRIVATE ARTESIAN WELLS OF DIFFERENT DEPTHS

Abstract

ABSTRACT The groundwater presents a concentration of fluoride ranging from values below 0.05 and up to 35 mg F/L (ppm F), depending on rocks composition. The objective of this study was to evaluate fluoride concentration in artesian wells water at different depths in Maringá region, in Parana state. Water samples were collected from 166 artesian wells, with depths ranging from 9 to 400 meters and informations obtained from Water Institute of Maringá. The samples analysis were carried out by specific ion electrode to fluoride identification. The results showed that average concentration of fluoride was 0.09 + 0.15 µgF/mL, ranging from 0.03 to 0.92 µgF/mL. No correlation was observed between fluoride concentrations with wells depths. It was concluded that majority samples presented low concentration of natural fluoride, except for one water sample.

Keywords

• Groundwater
• Fluoride
• Water Wells