Sources of Nitrate in Ground Water Aquifers of the Semiarid Region of Tanzania by Rita Alex, Aldo Kitalika, Emmanuel Mogusu, Karoli Njau

“…The higher NO3− contamination observed in the wet season could be due to rainfall which accelerated the surface runoff that collects different materials from various settings into the ground water sources. Nitrate source identification through hydrochemical technique revealed that most nitrates originated from sewage effluents and/or organic wastes such as manure. …”
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