In a typical home these days, you have numerous water sources, such as faucets for the kitchen and bathrooms, plumbing for use of a dishwasher, and so on. Faucets include controls for hot or cold water. Each control uses a filter cartridge and that cartridge eventually clogs up with particles and matter that causes it to not function properly, hence requiring replacement.
Replacement water filters are available for many types of water filter cartridges and devices and there are many different types. You can buy water replacement filters from https://healthyhabitats.com.au/.
The need for a water filter replacement is evident when, say for a shower, one experiences wild swings of temperature at one setting that did not occur before. Another condition is when a faucet's water flow is increasingly less or not at all.
Replacement water filters vary in quality. It is a good idea to learn about the water quality delivered to you by your water authority so that you can choose to get a filter that contains the objectionable element in the water coming to your home.
The higher the function of the water filter, the higher its cost. It is better to replace your water filters with at least an equivalent filter or more as you can afford. You might not have a clue on what an equivalent filter is if the existing failed filter shows no indication or markings. In that case, you would take the failed filter to a store and get assistance to match it to a current equivalent.