How Often Should I replace Water Filters at Home?

Not all water in the world is safe for consumption, which is why there is a need to purify the water first to make it suitable for drinking and other necessary household chores. There are various methods on water filtration. And however reliable and expensive the filters you have been using, they always need to be replaced time and again.

Pouring water into glass on blue background

Most of the filtration methods use minerals like carbon, charcoal or any combination of filter media to lessen contaminants in water. Several methods mechanically filter impurities by trapping the large crusts in the pores of the filter while others stick to the surface of the filter media. After some time, the pores of the filter media will be clogged with fragments that water will not be able to pass through the filter appropriately. Also, the surface area of the filter media becomes so full of impurities and it will not be able to absorb contaminants.

The matter on when to replace the water filters should be standardly answerable by it depends. The recommended regularity of the change cycle of water filters depends upon the quality of water. If the water which is being filtered holds voluminous impurities, then the effectiveness of the filter would be around a shorter period of time and should be replaced more frequently compared to water with lesser contaminants. In addition, the change cycle of filters also depends on the quantity of water usage. For a big family that uses large quantities of water, the filters are to be changed more frequently than those families that use water less. Water filters that are purchased from the market come with manufacturer’s instruction on when to properly changed water filters in order for the water filter product to effectively continue reducing impurities in water.


It is also advisable to find the perfect replacement cartridge because a tiny difference in size could lead to ineffective water filtration. Unregistered and non-certified cartridges should be avoided as they may not be of the same quality and could risk the safety and cleanliness of the water.