Do I need a water filter?
For homes attached to a mains water supply, a water treatment device is probably not necessary, because the water supplier is responsible for providing water that is safe to drink and of good aesthetic quality. However, consumers may choose to use a home treatment device, and there are many products on the market.
There are two primary reasons why consumers may choose to have a home water filter — for aesthetic reasons to improve taste or odour, and for health reasons to protect against microorganisms. Different types of filters are designed to remove different contaminants, so it is important to select the correct type of filter for the right purpose. Most are ‘point-of use’ devices that simply treat water where it is used, such as at the kitchen sink. The advantage of this approach is that only water used for drinking or cooking is treated, so it is much cheaper than treating the entire water supply to the home with a point-of-entry device.
Whatever sort of device is used, it is important to maintain it properly, because home water treatment devices can be a health hazard. For example, a water filter provides an excellent environment for bacteria to grow if it is not used properly. Bottled water is subject to different water quality requirements than drinking water, so water delivered in bottles is not necessarily subject to the same treatment, storage and delivery requirements as drinking water out of the tap.