How to filter out fluoride from tap water

Written by kat oakley
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How to filter out fluoride from tap water
Adding fluoride to tap water is controversial. (Juri Samsonov/iStock/Getty Images)

Fluoride can occur naturally in water but some UK water companies add the chemical to water supplies. Although fluoride is beneficial for preventing dental cavities, some research suggests that fluoride might be a neurotoxin that could cause neurological disorders. If you don't want to risk drinking fluoride, there are a few ways to filter the chemical out of tap water.

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  1. 1

    Try steam distillation. The process uses activated alumina to remove fluoride and will remove 95 per cent or more. A steam distillation process needs a large area to heat and distil the water. It is a very slow process that will only remove fluoride from about 1 litre (1/4 gallon) of water per minute.

  2. 2

    Experiment with reverse osmosis. Reverse osmosis uses a semi-permeable filter allowing water to pass through while stopping contaminants from entering the water supply. This process requires some pressure to push the water through the filter and out to the tap. A good reverse osmosis system will use a crossflow process that automatically cleans the filter and pushes the contaminants down the drain, away from the household water supply.

  3. 3

    Install a home water filter system. This option uses a filter made of activated alumina and sometimes carbon. These filters will take out all contaminants and give you healthier drinking water.

Tips and warnings

  • Tailor your system to your needs. The steam distillation process would be more suited to a business, as this system is very large. The in-house water filter is the best option for domestic use.

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