Most Common Problems With Zero Water Filter

ZeroWater filters are popular for purifying drinking water. Like any product, they may have faults that hinder performance. This page will cover how ZeroWater filters function, what they remove, their pH levels, O-ring, and certification, as well as common filter difficulties. We’ll also offer filter maintenance and longevity tips.

Short Answer
Zero Water filters often experience airlock or trapped air bubbles. This issue might cause water to drain improperly in new or old filters. Unscrew and re-tighten the filter numerous times to break the airlock. If the filter is still blocked, remove the impediment.


Zero Water filters can give water a lemony taste after use. TDS buildup means the filter is dead. Zero Water filters clean water by removing lead, mercury, and asbestos. The five-stage filtering technique removes pollutants via ion exchange, activated carbon, and other materials.

Water quality, usage, and flow rate can affect Zero Water filter longevity. Based on household water usage, these filters last 2-4 months. To keep Zero Water filtering pollutants, replace it regularly. Besides airlock and a lemony taste, Zero Water filters often clog owing to obstructions and manufacturing flaws. Customer support can help with these situations.

How does it work?

ZeroWater filters eliminate contaminants in five stages. First, a coarse filter removes big particles and silt. The second step reduces chlorine and organic pollutants with an activated carbon filter. A distributor maximizes water-filter media interaction in the third step. Ion exchange resin eliminates dissolved lead, mercury, and chromium in the fourth stage. Ultra-fine screens collect any remaining particles in the last stage.

What does ZeroWater remove?

ZeroWater filters remove almost all dissolved solids—minerals, salts, metals, and organic molecules. ZeroWater filters remove chlorine, fluoride, and other pollutants that affect water taste, making their water incredibly pure.

Is it safe to drink ZeroWater?

Drinking ZeroWater is safe. The five-stage filter eliminates most dissolved solids, including minerals, salts, and metals, that might affect water flavor and quality.


To ensure that your ZeroWater filter remains efficient and long-lasting, it is important to follow these tips:

  1. Filter routinely. Clean it with a gentle brush and running water.
  2. Change your filter. ZeroWater filters last 2-6 months depending on use.
  3. Clean your filter housing with filtered water to avoid contamination.
  4. To avoid mold and bacteria, keep your filter cold and dry.

How can I make my ZeroWater filter last longer?

Here are some additional tips to help you prolong the lifespan of your ZeroWater filter:

  1. Cold water only. Hot water damages filters.
  2. Avoid overfilling the reservoir to avoid water bypassing the filter.
  3. After filling the reservoir, leave the filter for a few minutes. Water will fully saturate the filter media, improving performance.

Why does my ZeroWater filter keep clogging?

There are several reasons why a ZeroWater filter may become clogged:

  1. Hard water. High-mineral water clogs filters faster.
  2. Dirt and dust can build up on the filter without filtration.

How can I fix a clogged ZeroWater filter?

For a clogged ZeroWater filter, try these:

  1. Clean the filter with warm water.
  2. Soak the filter in 50/50 water and white vinegar for several hours, then rinse.
  3. Change the filter.

Is ZeroWater pitcher fridge-safe? ZeroWater pitchers are fridge-safe. When placing the filter in the fridge, it must be totally dry to prevent mold and bacteria growth.

Why does my ZeroWater leak?

ZeroWater filters leak for numerous reasons:

  1. Misassembled. A poorly built filter may leak.
  2. Broken spigot or dispenser button. A broken spigot or dispenser button may leak the filter.
  3. New pipe. If you recently relocated, the filter may leak due to excessive water pressure.
  4. Bacteriogenesis. Bacteria in the filter or housing might cause leaks.


ZeroWater filters are NSF-certified. ZeroWater filters are NSF International-certified to reduce lead, chromium, and arsenic.

Final thoughts on ZeroWater filter

ZeroWater filters are reliable and high-performing. By following proper care and maintenance practices, you can ensure that your filter remains efficient and long-lasting. 

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