Find an answer to all your questions:

1. How often should I clean my pitcher?

We recommend hand washing the lid, reservoir, and carafe every 3-4 weeks with hot soapy water (DO NOT CLEAN THE FILTER). Whenever possible, keep the Aozora Filter Pitcher out of direct sunlight to prevent bacterial growth.

2. How do I know when the filter needs to be replaced?

Depending on the hardness of your water, pitcher filters should be changed every 80 gallons of water or about every 4 months, whichever comes first.

3. Why is the flow of water through my filter slow?

The water filtration of your Aozora water filter is slower than most competitors because our the 4-stage filtration which remove a much larger range of contaminants. 

However, if you think that your water filter is filtering too slowly, you may need to re-flush your filter cartridge again by following the flushing instructions included in the user manual.

If this issue persist, please contact Aozora Customer Service at and we will help you resolve.

4. How does the filter work?

The Aozora Water Filter consist of 4 stages that removes organic and inorganic contaminants in your tap water.

1. Filter Screen:
Filters out fine particles and sediment.

2. Activated Carbon Granules:
Effectively reduces chlorine, odors, impurities and other chemicals. Particularly good on organics and for improved taste.

3. Ion Exchange Resin:
Negative and positive bed ion exchange resin that strips foreign ions from the water molecules and returns them to a pure state.

4. PET Fabric:
Remove ultra-fine particles and other contaminants.

5. What does the Aozora filter remove from the water?

The Aozora filter removes up to 99.99% of tap water contaminants. This includes fluoride, chlorine, pesticides, trace pharmaceuticals and other known menaces of municipal tap water. The filter’s proprietary technology meets and exceeds NSF Standards 42 and 53 for contaminant reduction. This means that it is thoroughly tested to make water odorless and fresh-tasting, as well as remove a variety of health-related contaminants. Better still, it does all this without removing health-essential minerals from the water.

6. Why is TDS level after filtration not zero (0) ?

Many filters like Zerowater filters have been marketing themselves based on their ability to remove TDS. However, TDS is not a measure of water contaminants. Much of what constitutes TDS is actually healthy minerals like calcium and magnesium, which Aozora is designed NOT TO REMOVE.

Note: even if your water has a TDS reading of zero, it means that your water does not contain healthy minerals anymore.

According to the NSF Consumer Fact Sheet on TDS, which is linked below, “A TDS meter does not directly measure heavy metal contaminants such as lead or arsenic in the water.  A TDS reading is not an indication as to whether a water filter is working properly to reduce these contaminants.”

7. Does Aozora filters remove healthy minerals from the tap water?

The Aozora filters are designed to keep healthy trace minerals in your water like calcium and magnesium while removing toxic contaminants.

8. Can I filter salt water?

No, Aozora water filters are not designed to filter salt water. We do not recommend using any of our products with anything but fresh water.

9. Can I filter fresh water from rivers or lakes while camping?

Our Aozora UV Light Water Pitcher is the only water pitcher recommended to clean fresh water during your outdoor adventures thanks to it’s built-in UV light disinfection. To learn more, click here.

10. What should I do if water is leaking from the water reservoir?

Tighten the Water Filter Cartridge to the Water Reservoir to form a perfect seal. If leaking persists, please contact our customer service department at for further assistance!