Location and time-specific investigation of roof rainwater quality is important to safeguard public health

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dc.creatorTaffere, Getachew Redae
dc.creatorBeyene, Abebe
dc.creatorVuai, Said A. H.
dc.creatorGasana, Janvier
dc.creatorSeleshi, Yilma
dc.date2020-03-23T07:12:47Z
dc.date2020-03-23T07:12:47Z
dc.date2016
dc.date.accessioned2022-10-20T13:09:15Z
dc.date.available2022-10-20T13:09:15Z
dc.descriptionAbstract. Full Text Article available at: https://www.tandfonline.com/doi/abs/10.1080/19443994.2015.1107757
dc.descriptionHarvested roof rainwater plays a vital role in supplying water in the scarce semi-arid areas. Prior knowledge of rainwater quality helps to understand the relative pollutant contributions of location- and time-associated factors. The present work is aimed to explore source and time factors affecting rainwater quality and associated public health risk in the city of Mekelle, a semi-arid area in Ethiopia. Roof rainwater samples (n = 21) were collected from May to August 2014 from residential, commercial, bus station, and industrial areas. The samples were analyzed for major ions, physical parameters, and coliforms. The order of concentrations of major ions was observed to > Ca2+ > Cl− > Mg2+ > > Na+ > > > K+. The average pH of rainwater at these stations was 8.26 and ranging from 6.84 to 10.59, indicating alkaline nature. The observed alkalinity is attributed to the nature of soil and geological formation of the area and a significant influence of the cement factory. No definite trends were found in most of the ionic components at all the locations and time of sampling with p-value > 0.05. However, concentrations of physical parameters (total dissolved solids, electrical conductivity, total suspended solids, and turbidity) were statistically significant with time of sampling (p-value < 0.01). Bacteriologically, 76% of the samples were positive for total coliforms. Moreover, 19% of the samples were positive for fecal coliform. These signify the importance of appropriate treatment measures before using rainwater for domestic water supply so as to prevent potential adverse health effects.
dc.identifierTaffere, G. R., Beyene, A., Vuai, S. A., Gasana, J., & Seleshi, Y. (2016). Location and time-specific investigation of roof rainwater quality is important to safeguard public health. Desalination and Water Treatment, 57(43), 20318-20326.
dc.identifierhttps://doi.org/10.1080/19443994.2015.1107757
dc.identifierhttp://hdl.handle.net/20.500.12661/2278
dc.identifier.urihttp://hdl.handle.net/20.500.12661/2278
dc.languageen
dc.publisherTaylor & Francis
dc.subjectRoof rainwater
dc.subjectHealth effect
dc.subjectWater quality
dc.subjectEthiopia
dc.subjectRainwater
dc.subjectRainwater harvesting
dc.titleLocation and time-specific investigation of roof rainwater quality is important to safeguard public health
dc.typeArticle

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