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Table 3 Spatial distribution of fluoride in water sources by division

From: High fluoride water in Bondo-Rarieda area of Siaya County, Kenya: a hydro-geological implication on public health in the Lake Victoria Basin

Division Asembo Uyoma Maranda Nyang’oma Usigu Overall
Mean [F]±SD 0.92±0.46 1.39±0.84 0.69±0.42 1.00±0.59 0.78±0.66 0.85±0.67
Highest 2.27 5.44 1.7 2.23 2.34 5.44
>3.0 ppm - 01(9.1%) - - - 1(0.8%)
1.5-2.9 ppm 3(8.6%) 2(18.2%) 2(4.5%) 2(33.3%) 5(16.7) 14(10.9%)
1.0-1.4 ppm 9(24.3%) 2(18.2%) 6(13.6%) 0(0.0%) 4(13.3%) 216(16.4%)
0.5-0.9 ppm 20(57.1%) 3(27.5%) 21(47.7%) 3(50.0%) 9(30.0%) 56(43.8%)
0-0.4 ppm 5(14.3%) 3(27.5%) 15(34.1%) 1(16.7%) 12(40.0%) 36(28.1%)
Lowest 0.17 0.01 0.02 0.2 0.11 0.01
% [F] > 1 ppm 28.6 45.5 18.2 33.3 30 28.1
Sample size (n) 37 11 44 6 30 128