Water filters are increasingly popular, with many people distrusting tap water. A 2023 UK survey by Tappwater found 42% of respondents do not trust or like the taste of tap water, and 54% of Londoners use a filter. In the US, a poll by the Environmental Working Group showed half of 2,800 respondents considered their tap water unsafe, with 35% filtering it.
Filters range from simple jugs to high-tech devices costing thousands. They use technologies like adsorption, reverse osmosis, and UV light to remove contaminants. However, experts say the benefits depend on local water quality. In developing countries, filters can prevent diseases like diarrhoea, which kills one million people annually. A trial in the Dominican Republic saw diarrhoea rates drop from 25.6% to under 10% after installing filters.
In the West, tap water is tightly regulated and generally safe. Filters may improve taste and remove some contaminants, but they are not necessary for health. Some filters can even remove beneficial minerals. Consumers should check local water reports and choose filters certified for specific concerns.
