Adding fluoride to water supplies

Adding fluoride to water supplies.

Cancer mortality in England in relation to levels of naturally occurring fluoride in water supplies.

Sixty-seven small areas in England have been classified into four groups according to the level of naturally occurring fluoride in their water supplies. Small area mortality statistics for 1969-73 have been used to look for differences in cancer mortality in relation to fluoride levels. Deaths from all cancers and from cancer at 12 specific body sites have been examined; no consistent trends in...

Investigation of Fluoride Level in Drinking Water Supplies of Qaemshahr City (North of IRAN) from 2006 to 2012

Abstract Background and purpose Fluoride is one of the fundamental and required components in human body. The current study intends to survey the status of fluoride in drinking water supplies ( underground water source and drinking water) in Qaemshahr city from 2006 (march/21) to 2012(march/19) and comparison with universal standards, national and climatic conditions. Materials and methods This...

Natural fluoride levels from public water supplies in Piauí State, Brazil.

The aim of this work was to determine the natural fluoride concentrations in public water supplies in Piauí State, Brazil, in order to identify cities in risk for high prevalence of dental fluorosis. For each city, two samples of drinking water were collected in the urban area: one from the main public water supply and another from a public or residential tap from the same source. Fluoride anal...

Chemical contamination of water supplies.

Man-made organic chemicals have been found in drinking water for many years. Their numbers and varieties increase as our analytical capabilities improve. The identified chemicals comprise 10 to 20% of the total organic matter present. These are volatile or low molecular weight compounds which are easily identified. Many of them are carcinogenic or mutagenic. Chlorinated compounds have been foun...