Investigation on the Content of Fluoride in Drinking Water in Pastoral Area of Xilinhaote City in 2007

[Objective]To understand the content of fluoride in drinking water in pastoral area of Xilinhaote city,grasp the distribution of high fluoride in drinking water in fluorosis prevalence area,provide scientific basis for the program of safe drinking water.[Methods]Drinking water samples collected from 1 town,2 Sumu and 4 national owned pasture lands in Xilinhaote were tested for the content of fluoride in Sep,2007.[Results]Of the 1 469 water samples tested,the content of fluoride≤1.2 mg/L in 716 samples,the qualified rate was 48.745.while the content 1.2 mg/L in 753 samples,51.26% of them were over the standard.32.27%,16.27% and 2.72% of the water samples tested for fluoride can meet the standard of slight,moderate and serious fluorosis.22.66%(693) and 76.80%(776) of the water samples collected from the South and North area were over the standard(P0.01).[Conclusion]The super-standard rate of the content of fluoride in drinking water in Xilinhaote city was high,the prevalence of fluorosis was widely.