How can you tell if Brita filter is bad?

Author: Prof. Connor Kuhic  |  Last update: Wednesday, December 10, 2025

A green blinking light indicates that the filter is good. A yellow light indicates the filter should be replaced soon, while a red light blinking indicates the filter should be replaced. Filter performance is not certified after 40 gallons.

How to tell if a Brita filter needs replacing?

Filter Life Indicator: If your Brita pitcher has a filter change indicator, it will alert you when it's time to replace the filter, typically after filtering about 40 gallons of water or every two months.

When should I throw out my Brita filter?

Pitcher filters should be changed out every 3-4 months. If you leave filters in for any longer, you're introducing bacteria into what you're drinking. Tap would be better for you at that point.

What happens if you use an old Brita filter?

What Are the Risks of Using an Old Water Filter? Bacterial Growth: Old water filters can become a breeding ground for bacteria. When a filter reaches its capacity, it not only stops filtering effectively but can also start leeching trapped bacteria and minerals back into the water.

How do I know if my water filter is bad?

A clear indication that your water filter is malfunctioning is when your water starts to taste metallic or has a rotten egg odor. These are indications that the pollutants in the water you are drinking are not being filtered. Replace your water filter as soon as you observe these changes to avoid a more serious issue.

The PROBLEM With Brita Filters

How do I know if my filter is not working properly?

While a sudden change in the taste, odor, or color of your water can indicate that your filter is failing, high levels of important contaminants, such as pathogens, arsenic, lead, and nitrates, are not observable to your senses. The only way to truly know whether or not your filter is working is to test your water.

What happens if you drink water with a bad filter?

Health Risks: Drinking from an old filter can expose individuals to harmful chemicals and heavy metals that the filter was initially designed to remove. This can lead to health issues, especially in vulnerable populations like pregnant women, children, and the elderly.

Can water sitting in a Brita go bad?

If you do not change your water filter after 40 gallons of Brita or every 2 months, bacteria will grow in your filter or get mixed into your water.

Do you just throw away Brita filters?

However, Brita has a partnership to recycle its products with TerraCycle. Sign up to receive a free shipping label and send old Brita filters to be recycled.

Can you drink water right after changing the filter?

As long as you have followed the proper instructions to flush your new water filter with three gallons of water, you can usually drink the water right after you've finished the replacement. Check the instructions for your filter to make sure.

Should I keep Brita in the fridge?

Store your Brita® pitcher in a cool, dim place. Don't keep your Brita in bright sunlight, as it can cause algae to grow. Keep your Brita in the refrigerator if you plan to be away for longer than a couple of days.

How many times do you run water through a new Brita filter?

Q: Instruction says to dump out first 3 pitchers of filtered water after installing a new filter. That's 30-40 minutes of work.

Why does my Brita water taste weird?

If you are a new BRITA Maxtra+ user it is quite normal to notice a difference in the taste of filtered water. The new BRITA Maxtra+ cartridge has the capability to remove up to 20% more limescale from your water which when the cartridge is at its newest can appear to make the taste a little sharp for some people.

How to tell if a Brita filter has mold?

First, disassemble your Brita pitcher, and remove the filter. You may want to inspect the filter cartridge for black, green, or pink mold. If you spot mold, you will need to sanitize the filter separately, and wear protective gear like gloves and a mask to limit mold exposure, especially if you have mold allergies.

What does a Brita filter look like when it needs to be replaced?

A yellow light indicates the filter should be replaced soon, while a red light blinking indicates the filter should be replaced. Filter performance is not certified after 40 gallons. Changing your filter regularly helps ensure you have cleaner, great-tasting water.

Do Brita filters go bad?

The Brita Longlast Filter (blue) should be replaced every 120 gallons or about every six months. The Brita Stream Filter (gray) should be replaced every 40 gallons or about every two months.

Can bacteria grow in Brita?

The microbiological quality of filtered water in a commercial water filter system (Brita) was tested in households and in two laboratories. In 24 of 34 filters used in households, bacterial counts increased in the filtered water up to 6,000 cfu/ml.

How often should a Brita pitcher be washed?

Generally speaking, clean a Brita pitcher once a month or when you change the filter.

How long can a water filter sit unused?

There is no set shelf life for water filters, as long as they're not exposed to any moisture. That's the key — moisture is what makes water filters work, and without that, they're sitting pretty and ready for use at any time.

What if I forgot to rinse my Brita filter?

If the filter isn't rinsed before use, the water will not filter correctly and specs of debris will appear. Prior to use, it's advised to rinse filter under cold water.

Why shouldn't you drink tap water?

Some of those concerns are merited: NRDC reports have shown that millions of people in the United States get their water from systems detecting lead. And other health-harming contaminants, such as PFAS, atrazine, and nitrates, have also been found to be common in drinking water supplies across parts of the country.

What happens if you drink water right after changing the water filter?

Reason 1: Remove Initial Carbon Dust and Particles.

Flushing a new water filter is necessary to eliminate any initial carbon dust and particles. These impurities can accumulate during the production and packaging of the filter. If not flushed out, they can mix with your drinking water, affecting its quality and taste.

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