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dc.contributor.authorLugodisha, Innocent
dc.contributor.authorKomakech, Hans C.
dc.contributor.authorNakaya, Shinji
dc.contributor.authorTakada, Ryogo
dc.contributor.authorYoshitani, Junichi
dc.contributor.authorYasumoto, Jun
dc.date.accessioned2021-06-15T08:48:09Z
dc.date.available2021-06-15T08:48:09Z
dc.date.issued2020-10-21
dc.identifier.urihttps://doi.org/10.2166/nh.2020.179
dc.identifier.urihttps://dspace.nm-aist.ac.tz/handle/20.500.12479/1248
dc.descriptionThis research article published by IWA Publishing, 2020en_US
dc.description.abstractIn Arusha urban, northern Tanzania, groundwater contributes about 80% of the water supply. However, elevated fluoride levels and evidence of anthropogenic pollution have been reported in the groundwater around Mount Meru which is a water source for Arusha urban. This study aims at understanding the recharge areas and flow pathways of groundwater in what has been a poorly monitored area. The study uses the isotopic ratio of oxygen and hydrogen to estimate the groundwater recharge area and flow pathway. The results show the recharge elevation of groundwater is between 1,800 and 3,500 m above mean sea level on the slopes of Mount Meru. The average fluoride contents in the study area are 5.3 ± 0.4 mg/L greater than the limits of 1.5 mg/L set by the World Health Organization (WHO) and Tanzania. The nitrate concentration of 83.9 mg/L at the lower elevation areas (<1,400 m above mean sea level) exceeds the 50 mg/L WHO limit. The relationship of F− with δ18O and NO3− suggests the leaching of fluoride in high altitudes and dilution in lower altitudes.en_US
dc.language.isoenen_US
dc.publisherIWA Publishingen_US
dc.subjectAltitude effecten_US
dc.subjectArusha Aquiferen_US
dc.subjectGroundwateren_US
dc.subjectIsotopesen_US
dc.titleEvaluation of recharge areas of Arusha Aquifer, Northern Tanzania: application of water isotope tracersen_US
dc.typeArticleen_US


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