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High fluoride, modest fluorosis : investigation in drinking water supply in Halaba (SNNPR, Ethiopia)

In Halaba district in Southern Ethiopia fluoride levels from boreholes are high (2.6 to 7.0 mg/l), yet the inci-dence of fluorosis is modest. Drinking water users living in the vicinity of four drinking water systems that have been in operation for more than 35 years were surveyed. Out of 625 persons 5 percent had severe dental fluorosis and 42 percent had mild forms—which is considerably less than results of other areas with compa-rable fluoride levels. The incidence was highest in the older age groups. Possible explanations were explored. A likely reason may be the continued large dependence on rain water harvesting ponds for human consump-tion alongside the use of water from the public borehole systems, but more investigations would be required to confirm this proposition. [authors abstract]

TitleHigh fluoride, modest fluorosis : investigation in drinking water supply in Halaba (SNNPR, Ethiopia)
Publication TypeJournal Article
Year of Publication2011
AuthorsSteenbergen, F. van, Haimanot, R.T., Sidelil, A.
Paginationp. 120 - 126; 4 tab.; 1 fig.
Date Published2011-02-01
Keywordsdental health, ethiopia halaba, fluorides, fluorosis, water quality, water quality monitoring, water-related diseases
Abstract

In Halaba district in Southern Ethiopia fluoride levels from boreholes are high (2.6 to 7.0 mg/l), yet the inci-dence of fluorosis is modest. Drinking water users living in the vicinity of four drinking water systems that have been in operation for more than 35 years were surveyed. Out of 625 persons 5 percent had severe dental fluorosis and 42 percent had mild forms—which is considerably less than results of other areas with compa-rable fluoride levels. The incidence was highest in the older age groups. Possible explanations were explored. A likely reason may be the continued large dependence on rain water harvesting ponds for human consump-tion alongside the use of water from the public borehole systems, but more investigations would be required to confirm this proposition. [authors abstract]

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