Explainer: What do water filtration devices do; are they necessary given the quality of Singapore’s tap water?

Explainer: What do water filtration devices do; are they necessary given the quality of Singapore’s tap water?

On Thursday , the Competition and Consumer Commission of Singapore issued a warning to alkaline water filtration system supplier Purexygen forEarlier this year, the Advertising Standards Authority of Singapore received complaints against local water and air filtration firm Sterra Singapore, whichSterra has taken down the online advertisement after national water agency PUB issued advisories to the company asking them to remove advertisements containing “false or misleading claims about tap...

Then there are systems that generate hydrogen water and alkaline water, and systems that both remove and add substances in water. Brands also offer the option of providing water at pre-set temperatures from cold to hot, and commonly state that the filtered water they provide has a “cleaner” and “purer” taste.

While drinking alkaline or filtered water may have no immediate danger to the consumer, Dr Leong said some claims that companies put out may be unfair to consumers. “Whether we need the nutrients added via the filter is a question mark, because of course we get all our nutrients and minerals from our food. How much of these do we get from our water?” said Dr Leong.PUB has emphasised that tap water in Singapore is safe to drink and meets the World Health Organization’s guidelines for drinking water quality.

Water experts also said that while such water filtration systems are needed in other parts of the world, the quality of water in Singapore makes such devices less relevant here. “Quite certainly, boiling water at home before consumption does not add additional safety to Singapore’s already highly treated and vigilantly monitored drinking water. In fact, the use of cheap kettles may deteriorate water quality by introducing various metals into the water consumed,” said Prof Snyder.

For example, filters that claim to remove lead from water are “probably redundant” here, since levels of lead in tap water are “really low”, said Mr Kwok.

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