Spatial Uncertainties in Fluoride Levels and Health Risks in Endemic Fluorotic
Groundwater for Sustainable Development 14 (2021) 100618 Contents lists available at ScienceDirect Groundwater for Sustainable Development journal homepage: www.elsevier.com/locate/gsd Research paper Spatial uncertainties in fluoridelevels and health risks in endemic fluorotic regions of northern Tanzania Julian Ijumulana a,b,c,*, Fanuel Ligate a,b,d, Regina Irunde a,b,e, Prosun Bhattacharya a,g, Jyoti Prakash Maity f, Arslan Ahmad g,h,i, Felix Mtalo b a KTH-International Groundwater Arsenic Research Group, Department of Sustainable Development, Environmental Science and Engineering, KTH Royal Institute of Technology, Teknikringen 10B, SE-100 44 Stockholm, Sweden b Department of Water Resources Engineering, College of Engineering and Technology, University of Dar Es Salaam, Dar Es Salaam, Tanzania c Department of Transportation and Geotechnical Engineering, College of Engineering and Technology, University of Dar Es Salaam, Dar Es Salaam, Tanzania d Department of Chemistry, Mkwawa College of Education, University of Dar Es Salaam, Tanzania e Department of Chemistry, College of Natural and Applied Sciences, University of Dar Es Salaam, Tanzania f Department of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi County, 62102, Taiwan g KWR Water Cycle Research Institute, Groningenhaven 7, 3433 PE Nieuwegein, The Netherlands h SIBELCO Ankerpoort NV, Op de Bos 300, 6223 EP Maastricht, the Netherlands i Department of Environmental Technology, Wageningen University and Research (WUR), Wageningen, The Netherlands ARTICLE INFO ABSTRACT Keywords: Spatial uncertainty caused by large-scale variation in fluoride(F ) occurrence remains a setback for water supply Groundwater authorities in the F belts of the world. It is estimated that approximately 80 million people in the East African Fluoride contamination Rift Valley (EARV) regions and volcanic areas exhibit a wide variety of fluorosissymptoms due to drinking water Probability kriging with F‾ concentrations higher than 1.5 mg/L (WHO guideline limit).
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