How To Know It's Time to Replace Your Water Purifier's Filters

How To Know It's Time to Replace Your Water Purifier's Filters

In order to ensure that we have access to clean and safe drinking water, water purifiers have become a crucial part of our lives. Indeed, there are various benefits of investing in a purifier. Water purifier filters play a vital role in removing impurities, contaminants, and harmful substances from our water supply.

However, to maintain their efficiency, it is crucial to replace the filters regularly. Here are 4 tell-tale signs that indicate it is time to replace your water purifier’s filters.

1. Decreased water flow

Significantly less water flow is one of the most obvious indications that your water purifier’s filters need to be replaced. If the filters are blocked with debris or other impurities, you will likely notice a weaker or slower stream of water. This is because the accumulation of these particles over time reduces the efficiency of the water filters.

To maintain optimal performance, it is recommended to check your water flow periodically. If you notice a substantial decrease, it is a clear indicator that the filters are saturated and need to be replaced promptly.

A change in the taste or odour of the water is another indication that it is time to replace the filters in your water purifier. Filters are made to get rid of impurities like bacteria, chlorine, and other contaminants that can affect the quality of the water we drink. Filters lose their capacity to properly remove contaminants as they deteriorate and get saturated with impurities, which may cause the water to taste or smell bad.

Thus, the presence of an unpleasant taste or odour in your drinking water even when the purifier seems to be working well is a clear sign that the filters are no longer doing their job of eliminating pollutants.

3. Visual examination of filters

The filters in your water purifier may be visually inspected to provide important information about their quality. The filter housings on most water purifiers are transparent or semi-transparent, allowing you to view the filters within. Examine the filters closely and look for any fading, obvious sediment accumulation, or evidence of deterioration.

As a general rule of thumb, the filters have reached their limit and are no longer able to efficiently cleanse the water if they seem discoloured or clogged with dirt. To guarantee the effective operation of your water purifier, it is also crucial to change the filters right away if they are deteriorated or damaged.

4. High number of litres used

When you see a large volume of litres being consumed, this is one of the key indicators that it’s time to replace the filters in your water purifier. A certain volume of water may be filtered via a water purifier before the filters need to be changed. If you find yourself surpassing this number quickly, it means the filters have hit their limit and are no longer successfully eliminating pollutants.


Maintaining clean and safe drinking water requires checking the state of your water purifier’s filters and changing them as needed. The 4 warning indicators covered in this article make it abundantly evident that it is time to replace the filters in your water purifier for home.

PureDew offers four replacement water filters that complement our range of water dispensers in Singapore. These water filters are accredited as NSF Certified Filter Media and FDA Certified Filter Housing.

For more information, do not hesitate to contact us today!