How Long Do ZeroWater Filter Cartridges Last?

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Water filtration is an important part of maintaining a healthy lifestyle. Many people use water filters to ensure their water is free from impurities or contaminants.

ZeroWater filter cartridges are some of the most popular on the market, but how long do these cartridges last? This article will provide information about the average lifespan of ZeroWater filter cartridges and other tips for getting the most out of your filters.

Key Takeaway
  • ZeroWater filter cartridges are designed to filter out contaminants and impurities.
  • ZeroWater filters last about 40 gallons or about 2-4 months, depending on the tap water quality and your water usage.
  • The lifespan of a ZeroWater filter depends on your tap water’s total dissolved solids (TDS) count.

How Long Do Zero Water Filter Cartridges Last?

ZeroWater filter cartridges are popular for those looking to remove impurities from their drinking water. They are designed to reduce lead, chromium, PFOA/PFOS, mercury, and other contaminants that may be present in unfiltered tap water. But how long can you expect the filters to last before needing to be replaced?

ZeroWater filter change should be done after it has filtered about 40 gallons or about 2-4 months of use. This estimate assumes that your source water contains moderate TDS, about 002-050 ppm. If your filtered water measures a TDS above 006 ppm, you must replace the ZeroWater filter immediately.

zerowater filter cartridges

Another factor to consider is your water usage. Of course, the more water it has filtered, the more it is exposed to contaminants. Sooner, the filter will get clogged and inefficient, thus requiring replacement. 

Factors That Affect the Lifespan of ZeroWater Filter Cartridges

As you know, ZeroWater filter is one of the best pitchers, so when investing in this filter, it’s important to be aware of the factors that affect the longevity of its cartridges.

Poor water quality

The quality of your source water greatly affects the lifespan of your ZeroWater filter. For one thing, contaminants end up on your filter—clogging its micropores. Thus, tap water with a high level of TDS could strain your ZeroWater filter. To counter its effects, you have to replace the filter more frequently.   

Water usage

The lifespan of your ZeroWater filter cartridge also depends largely on how much water you use. If it has filtered a large volume of water, it could mean that the filter is also exposed to many contaminants. To keep your filter running effectively for as long as possible, it’s important to monitor your usage and replace the cartridge when necessary.

End of filter life

ZeroWater filters are designed to function until the end of their life—until it has filtered 40 gallons in about 3-4 months of use. To ensure you get the most out of your ZeroWater filter cartridge, it’s important to know when and how it should be replaced.

dirty zerowater filter cartridge

When to Change your ZeroWater Filter Cartridges

Regarding filtering water, the ZeroWater filtration process can help you get the cleanest water possible. But how do you know when it’s time for changing ZeroWater filter cartridges? It’s important to stay on top of filter changes to keep your water free from contaminants. Here are some tips for knowing when to replace your ZeroWater filter cartridges:

High TDS level

ZeroWater filters aim to reduce the TDS level of water to 0. For this reason, each ZeroWater filter comes with a TDS meter so you can monitor your TDS regularly. When your TDS meter reads 006ppm and above, your ZeroWater filter has to be replaced.

Bad-tasting filtered water

If your filtered drinking water suddenly tastes unpleasant, it is time to change your ZeroWater filter cartridge. Over time the filter gets clogged with different contaminants. causing it to stop filtering your water. A change in taste, acidic or fishy, is a sign that the ion exchange resin has stopped working.

Slow water flow

Like many gravity-fed water filters, ZeroWater filters have a slow flow rate. However, if water filtering has become much slower, consider replacing your Zerowater filter. The culprit might be the clogged filters that do not allow water molecules to pass through its micropores. 

zerowater filter cartridge withhigh tds level

How Often Should Zerowater Filters Be Replaced?

Replacing a ZeroWater filter on time ensures your drinking water remains pure and healthy. The frequency at which you should replace the filter depends on how often you use it and some other factors.

ZeroWater filters can last up to 2-4 months after it has filtered 40 gallons. However, depending on the tap water quality and your water usage, you might have to replace your filters sooner than anticipated. 

Again, the 40-gallon filter span is based on the impression that the TDS level of your source water measures between 002-050 ppm. If it is beyond 300 ppm but not above 400 it can only last up to 15 gallons of water. 

Use the provided TDS meter to measure the TDS level of your filtered water. If it measures above 006 ppm, consider a filter replacement. 

dirty zero filter cartridge

In addition, if you do not want to frequently change the filter of your filtration process, you can use a Reverse Osmosis system that works more effectively and does not require frequent filter changes.

Frequently Asked Questions About Zero Water Cartridges

What happens if I don’t change my ZeroWater filter?

If you do not replace your ZeroWater filter after reaching capacity, it will stop filtering contaminants from your drinking water. This means that chlorine and other harmful substances may be present in the water after passing through the filter, making it unsafe for consumption. 

How to extend the ZeroWater filter lifespan?

Like many water filter pitchers and dispensers, only use treated municipal water. Well water approved for drinking can also be used with ZeroWater filters. ZeroWater purification process is not designed to filter out microbes, so it has to be removed prior. Also, it would help to clean your ZeroWater filter pitcher regularly. 

After how many gallons do ZeroWater filters expire?

ZeroWater filters can last for about 40 gallons or about 2-4 months, depending on the TDS level of your tap water. 

Do ZeroWater filters have a shelf life?

Unused ZeroWater filters sealed in their original packaging and stored in a cool, dry place do not have a shelf life.

Are ZeroWater filters recyclable?

Yes, ZeroWater filters are recyclable. The company offers a mail-in recycling program where customers can return used filters to be recycled into new products like irrigation systems and automobile parts. 


Replacing the ZeroWater filter cartridge is an important part of maintaining a safe and healthy drinking water supply. Knowing how long ZeroWater filters last is key to ensuring your family receives clean, filtered water.

ZeroWater filters are designed to last up to 4 months, but if your water usage is high, you may need to replace it sooner. 

This article has explored the various factors that influence the life of a ZeroWater filter cartridge, such as how frequently it is used and the quality of your water. The average ZeroWater filter cartridge should last between two to four months with proper care.

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