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How to Tell When Water Filter Needs Replacing? Things to Know

Fact checked by Stephen Conklin

how to tell when water filter needs replacing

Everyone wants to enjoy filtered water because it tastes great and is healthy. If you are using a water filter for the first time, you must’ve searched the internet ‘how to tell when water filter needs replacing.’ There is no need to be embarrassed; you are not the only one curious to know. It is necessary to know when to change the water filter in the fridge so your household can enjoy a continuous supply of filtered water.

A water filter is a device that purifies water by removing impurities and minerals like mercury, zinc, cadmium, copper, and more. It produces better-tasting water that is free of any odor, hardness, and bacteria. While there are several types of water filters available, the ones used in refrigerators and pitchers are the most common.

Now that we know what a water filter is capable of, it is time to answer the question. By the end of this article, you will be able to know when to change a Brita filter.

Table of Contents

Signs to Tell When Water Filter Needs to Replace


There are several factors to consider when replacing a water filter. Each brand and model has an expected lifespan measured in gallons of water or months of use. It is the primary indicator that you should refer to. However, some situations call for a replacement sooner than the indicated time or volume of water. Here are some of them:

Foul smell and bad taste

When your water starts smelling like rotten eggs or tastes metallic, it’s an obvious sign that your water filter is not working as it should be. These are signs that the contaminants are not being filtered and affect the water you are drinking. Once you notice these changes, replace your water filter before the problem becomes more serious.

Molds and floaty bits

If you see black molds or floaty lumps in your filtered water, that means your filter is long overdue for a replacement. The molds are fungus that can cause serious health problems and are signs that you need to change the filter and clean the water unit. Don’t forget to wash your hands after handling your old filter, as it might contaminate the new filter when you install them.

Scale build-up

Scale build-ups? That’s a clear symptom of hard water that is caused by minerals like calcium and magnesium. If you are using a water filter that is attached to faucets and showerheads, this is what you will see. It is something that shouldn’t be present in filtered water; change your water filter right away.

Low water pressure

A drop in water pressure means that the filter is clogged with contaminants. It is noticeable with water filter systems that are connected to fixtures around the house. Another reason for this is leaking, so make sure to contact a plumber to address this issue.

High levels of TDS

Measure the total dissolved solids or TDS in your filtered water and compare it with unfiltered tap water. When a water filter is used for a long time without replacement, it stops working efficiently, and you can see it in the high level of TDS.

Changing the water filter regularly is required if you want it to work effectively and efficiently. Having a backup filter on hand is also convenient. It ensures that your home has a steady supply of filtered water. Don’t wait for your filter to stop working before you replace it.

Different water filter models require distinct filters. Make sure to check the manual of your filter and order the right parts. You can find tutorials on how to change your fridge’s water filter on the Internet; simply type the brand and model that you have.

Best Water Filters Available in the Market


Buying your first water filter or planning to upgrade the existing one you are using? Then, you will find this list of some of the trusted water filters in the market. These are picked based on several factors, including convenience, installation, and features.

Brita Basic Faucet Water Filter System

This Brita water filter can be attached to a standard faucet without needing any tools. It can produce great-tasting filtered water by reducing up to 99% of contaminants. The filter can last 100 gallons or approximately four months before it needs a replacement.

ZeroWater 6-Cup Water Filter Pitcher

ZeroWater’s BPA-free water filter pitcher is an effortless way to enjoy filtered water. It features a five-stage water filtration process to bring you clean and better-tasting water. The filter can be used for around three months. However, it could vary depending on the contaminants present in the water and the usage.

Apex Countertop Drinking Water Filter

You can conveniently sit this Apex water filter on your kitchen counter. It will supply your home with fresh and clean alkaline water. Each unit can filter up to 750 gallons of water before requiring a replacement.

Final Thoughts

If you reached this section of the article, you probably know already when the PUR water filter needs replacing. It would be best to always keep in mind to check the filter’s life cycle and examine the filtered water for anything unusual like the taste, odor, or appearance. For a water filter recommendation, you can consider Brita Basic Faucet Water Filter System.

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