How Often Should I Change My Water Filter?

Installing a water filtration system is not a one and done kind of exercise.

While the system will continue to operate regardless, the effectiveness will depend on the quality of the filter inside.

Every time you turn on your tap or water dispenser, the filter will collect debris and contaminants from your water origin source. That’s great as it means you aren’t drinking it.

But gradually, all the sediment and debris will collect in your filter, creating a build up. So, if you don’t change that filter regularly, it can’t continue to run effectively.

So, how often should I change my water filter?

That is the very question we are going to answer in this article. Read on to find out the answer…

How Often Should I Change My Water Filter?

Installing a water filtration system at home or in your workplace is a great decision for your health. But, in order for the system to remain in optimal condition, you will have to change the filter on a regular basis. This ensures that you don’t get a build up of contaminants impacting the quality of your water.

So, how often should you change the filter?

The actual frequency will depend on the specific type of filter you have and the manufacturer’s recommendation. When you buy your filtration system, make sure to check with the retailer on how often you need to change your filter.

We know, we know. What we have written might be very true, but it’s not very helpful for you as it doesn’t specifically answer the question! Especially if you have inherited a home or workplace with an existing filtration system that you did not install yourself. So, we’ll narrow it down a bit.

As a general guideline, most standard water filters will typically need replacing every nine to twelve months.

Things That Can Impact Your Filter

While the manufacturer’s recommendation might be to change your filter at a certain frequency, there are a number of things that could impact that timeframe and change the needs.

Some of those things are:

  • Amount of water: if you filter a large amount of water each day, then you may need to change your filter more often than the manufacturer’s recommendation.
  • Water source: the level of filtering required can vary depending on the quality of your water source. If your source water has a lower quality, it might mean your filter needs to be changed on a more regular basis as it will need to remove more contaminants.
  • Noticeable changes: sometimes external contaminants can enter your water source, such as extra treatment of town water supply or contaminants in your water tank. These external factors can become noticeable in the taste or clarity of the water. Your filter may end up working harder than normal to keep your drinking water clear and tasty.

Signs You Need To Change Your Filter Now

Rather than blindly following the guidance of the manufacturer, it is better to look out for signs that you need to change the filter in your water system.

Here are some of the most common indicators:

Less Water

If you notice a significant decrease in water flow from your tap or dispenser, it could be a sign that the filter is clogged and needs replacement. The filter catches all the things that you don’t want contaminating your drinking water. So over time, the accumulation of sediment, contaminants, and debris in the filter can restrict the water flow.

Poor Water Quality

Is your filtered water starting to taste or smell differently? Maybe you’ve noticed a decline in its clarity and your water is starting to look quite cloudy. If so, it may be an indication that your filter is no longer removing contaminants effectively. This can happen as the filter becomes saturated and loses its ability to properly purify the water. When this starts to happen, it’s time to replace the filter.

Exceeded The Recommended Lifespan

Every water filter will come with a manufacturer’s recommendation on how often you need to change the filter. While this is a rough guide, you should try to follow the recommended timelines. If you have been using the filter for longer than the recommended lifespan, it is likely time for a replacement. Filters are designed to have a specific capacity and become less effective as they reach their maximum usage.

Warning Light

Some variations of water filters will actually tell you when the filter is due to be changed. They usually do this by flashing an indicator light or display. This is particularly common in filters that are built into appliances like your fridge. It’s a good visual reminder for keeping track of when to change your filter to ensure the quality of your water remains high.

It’s Time

If you have been following a regular maintenance schedule for your water filter system, and it is time for a filter replacement based on that schedule, it is advisable to change the filter accordingly.

Is It Time?

Time to change your filter? Then, head on over to our website to browse our range of locally sourced water filtration products.

If you have any queries or concerns about the frequency of changing your water filter or how to do it, then don’t hesitate to get in touch with our team.

We are water experts and we’re here to help. Whether you have an under-sink or fridge filter, or an entire water filtration system, we have you covered.

Simply chat with us on our website, email us at or call us on 0800 936 426 and we’ll answer any questions you have about how often you should be changing your water filter.