The Definitive Guide To Choosing A Water Filter

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Standard tap water generally contains 300 to 500 mgs TDS per litre.

However, they can be so effective that they even remove trace minerals from the water – which you will have to replenish in other ways, as your body relies on them to function correctly.

Dr Martin Fox, author of ‘Healthy water for a longer life’’ says of this “It would be a mistake to believe that water with a very low or even zero TDS rating is an indication that the water is better”.

Reverse Osmosis: This process pushes water through a semi-permeable membrane that blocks particles larger than water molecules. Reverse osmosis can remove many contaminants not removed by activated carbon, including arsenic, fluoride, hexavalent chromium, nitrates and perchlorate. However, reverse osmosis does not remove chlorine, trihalomethanes or volatile organic chemicals (VOCs). Many reverse osmosis systems include an activated carbon component than can remove these other contaminants. Quality can vary tremendously in both the membrane system and the carbon filter typically used with it. Consumers should also be aware that reverse osmosis filters use 3-to-20 times more water than they produce. Because they waste quite a bit of water, they are best used for drinking and cooking water only. –

Choosing the Best Water Filter
Choosing the Best Water Filter

If You Have Hard Water

Water softening systems are first and foremost designed to deal with hard water problems. Do not mistake them for a filter per se – as most won’t remove many contaminants.

Water Softeners: These devices typically use an ion exchange process to lower levels of calcium and magnesium (which can build up in plumbing and fixtures) as well barium and certain forms of radium. They do not remove most other contaminants. Since water softeners usually replace calcium and magnesium with sodium, treated water typically has high sodium content. Some people may be advised by their physicians to avoid softened water. For the same reason, it is also not recommended for watering plants and gardens.

If You Are Worried About A Specific Contaminant

The EWG site offers a fantastic way to search for filters which reduce specific contaminants.

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