When Does ZeroWater Filter Need to Be Changed?

tds and a new zerowater filter
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Ensuring your water filter provides you with the cleanest and safest water possible is essential.

This article will explain when to change your ZeroWater filter, how often a filter should last, and what signs to look out for when it is time for a replacement. Knowing the answers to these questions will help keep your family safe from any potential contaminants in your drinking water.

Key Takeaway
  • ZeroWater filters are known for their ability to filter out contaminants, leaving you with clean and pure water.
  • However, if you notice that your water tastes or smells strange, it could be a sign that the filter needs to be replaced.
  • The ZeroWater filter should be changed every 40 gallons or between 2 to 3 months, whichever comes first.

How ZeroWater Filters Your Water?

ZeroWater pitchers offer a unique way to filter and purify your tap water. ZeroWater filters work by using five stages of filtration technology that are designed to reduce levels of Total Dissolved Solids (TDS) found in tap water.

  • The first stage works as a sediment filter, which removes large particles like dirt or rust from the water.
  • The second stage uses an ion exchange technology, which helps reduce heavy metals such as lead or copper from the water.
  • The third and fourth stages use activated carbon and oxidation reduction alloy media to remove chlorine, chloramines, tastes, and odors from the water.
  • The fourth stage is a carbon block filter that helps reduce even more chlorine and organic compounds.
  • The final stage uses a KDF filter to remove additional heavy metals, traces of pharmaceuticals, perchlorate, and other chemicals.

The result is water that tastes better than bottled water and is healthier for you.

zerowater filter cartridges

When Should You Change a ZeroWater Filter?

Wondering when does Zero Water filter need to be changed? The ZeroWater filter should be changed every 40 gallons or between 2 to 3 months, whichever comes first. This will help ensure that the filter can work efficiently and provide the best possible water quality for your household.

If you notice the following signs, it is time to change your filter.

Change in the quality of filtered water

If you experience a change in the quality of the filtered water, then it may be time to change your ZeroWater filter. 

If you feel any odor or your water tastes like lemon, replace your ZeroWater filter. If you notice any of these changes, replacing your filter as soon as possible is best to continue receiving clean, safe drinking water.

Presence of contaminants or sediments

If you have a ZeroWater filter installed in your home, it is important to keep an eye out for the presence of contaminants or sediments. This can be determined by testing the water with a ZeroWater TDS meter. If pollutants or sediments are present, you must change your ZeroWater filter immediately. 

Slow water flow

If you have noticed that the water flowing from your ZeroWater filter is suddenly slower than usual, it’s time to replace it.

A ZeroWater filter is a great way to ensure you get clean and safe drinking water, but they’ll need to be changed every few months. 

Failing to change the ZeroWater filter regularly can lead to sediment build-up and other contaminants clogging the filter. This can result in reduced water flow, foul-tasting/smelling water, discolored water, and potential health risks. 

dirty zero filter cartridge

What is the Lifespan of ZeroWater Filters?

ZeroWater filter has been proven the best water filter jug as it uses advanced filtration technology to remove all dissolved solids from tap water, leaving only pure H2O. The time a ZeroWater filter lasts depends on how often it is used and the tap water quality. Generally, a ZeroWater filter can last anywhere from 2 to 3 months before needing to be replaced.

When using a ZeroWater filter, it’s essential to regularly check the Total Dissolved Solids (TDS) to know when it needs replacing. The TDS level should be monitored every few weeks or so, depending on how often the filter is used. If, after testing, the TDS level has risen significantly, then it’s time to replace the water filter immediately.

The indicator light on ZeroWater pitchers and dispensers will also alert you when it’s time to change the filter by flashing red or green. The red light indicates that both the ion exchange resin and carbon are nearing exhaustion. In contrast, a green light means that only the carbon is exhausted, which requires a simple replacement of the carbon filter instead of an entirely new cartridge.

dirty zerowater filter cartridge

How to Replace a ZeroWater Filter?

Replacing Zero Water filters is an easy task that can help ensure your tap water is clean, healthy, and contaminant-free. The Zero Water filtration system uses a five-stage filter that removes 99.6% of dissolved solids from your drinking water. Here’s how to replace the ZeroWater filter in just a few simple steps:

Disassemble pitcher

It is essential first to disassemble the pitcher. This will ensure that the entire process is done correctly and efficiently. To begin, remove the reservoir lid by gently pulling it off. It should come off quickly with a few twists and turns.

Attach a new filter to the reservoir

Remove the filter from its package and place it over the reservoir. Be careful not to let the filter’s contents spill onto the pitcher, as this could contaminate your water.

Fill the reservoir with water.

Once the new filter is in place, refill the reservoir with filtered water. Replace the reservoir lid, and you’re ready to enjoy fresh, clean water from your ZeroWater pitcher!

Test water quality

Once you’ve completed this simple maintenance task, test the quality of your water with a TDS meter to ensure you’re getting the best-tasting and cleanest water possible.

zerowater filter


What happens if you don’t change your ZeroWater filter?

If you own a ZeroWater pitcher, you must change the filter between 2 to 3 months or 40 gallons of water filtration. Not replacing your ZeroWater filter can lead to an array of issues. From reduced taste and odor, to slow water flow and more contaminants in your drinking water, it’s essential to stay on top of replacing your ZeroWater filter.

Are ZeroWaterfFilters recyclable?

It’s a question many people have when they’re shopping around for an eco-friendly option to filter their drinking water. The good news is that ZeroWater products are not only recyclable but the packaging is also made from recycled materials. 

ZeroWater offers a unique recycling program designed explicitly for its filters and pitchers. Once you’re done using your filter or pitcher, you can send it back in the ZeroWater packaging and place it in any curbside recycle bin or drop it off at any retailer that accepts plastic containers for recycling. This makes it easy to dispose of your used filter without worrying about damaging the environment. Plus, you’ll receive a discount code from ZeroWater for your next purchase with them! 

Do ZeroWater filters need soaking or priming?

It’s important to note that soaking is required for ZeroWater filters. This ensures that the filter’s pores are open and ready to filter water. When you first receive your ZeroWater filter, it will come with a guide explaining exactly how to soak it so you can enjoy fresh, clean water immediately.

ZeroWater filters also require priming before use. Priming is a process that prepares the filter for use by removing air from within its structure. Simply run cold water through the pitcher for three minutes until the meter reads 000. This ensures adequate flow through of water and ensures contaminants will be removed from your drinking water. 

Why does my filtered water from ZeroWater tastes like fish?

While this may seem odd, it’s pretty standard and can be easily solved. The leading cause of the fishy taste in your filtered water is likely due to a phenomenon known as ‘taste re-adsorption.’ 

This means that when the filtered water comes into contact with its plastic container, molecules of previously removed impurities (like chlorine) will reattach themselves to the plastic, returning to the container – and ultimately back into your drinking water. This can result in a noticeable fishy smell or taste. 


Keeping a regular replacement schedule for your ZeroWater filter is essential to ensure the water you drink is safe and clean. Changing the filter between 2 to 3 months is a good rule of thumb. 

However, this may depend on the amount of water consumed. Keeping an eye out for any changes in your water’s taste, odor, or color can be helpful indicators of when your filter needs changing. If you monitor these factors, you can ensure your drinking water is fresh and contaminant-free.

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