15 Reasons Why Brita Longlast Filter is So Slow? | How To Fix It?

Although the Brita water filter is a great and affordable way to get clean filtered water somehow, the longlast doesn’t work according to our expectations, and the filtration rate may be so slow.

When we don’t know the reasons for this, it causes a lot of disturbance in our minds.

So, we describe several possible reasons for slow filtration with solutions.

You can investigate and resolve your Brita filter clogging issue by this, and you can also save money and time.

Now, there could be fifteen probable reasons why your Brita longlast filter performs too slow.

It could be one of these – bubble trapped, high pollutant levels, defective filters, wrong filter installation, particles, or yellow well water.

By understanding these, you can troubleshoot and fix your pitcher filter speed and make it work accurately again like before.

Let’s go and get the accurate solution to your disturbing problem.

15 Reasons why your new Brita longlast filter is too slow

Types of Brita Filters available in the market.

There are five types of Brita filters.

Brita standard filter

Standard Filter – removes chlorine, cadmium, mercury, zinc, etc.

Brita Longlast Filter Is So Slow

Longlast Filter – removes chlorine, cadmium, asbestos, lead, benzene, etc.

stream filter

Stream Filter – removes particulates, dichlorobenzene, and chlorine.

brita bottle filter

Bottle Filter – removes chlorine, dust, and particulates.

Brita faucet filter

Faucet Filter – removes lead, asbestos, particulates, mercury, chlorine, benzene contaminant, and TTHMs.

There are various types of Brita filters having different water filtration methods so, we are explaining a few common causes why the longlast filter has slower filtration.

We have also a great list of the best pitchers selected from different categories and capacities. To explore click on the best water filter pitcher.

1. Water quality

Lower drinking water quality is the cause of clogging or molding a filter faster, as a result, Brita’s longlast flow rate gets less.

Your tap water may have a high level of sediments like pollutants, sand, clay, minerals, or rust.

Normally new Brita longlast filter takes 10-15 minutes to fill the reservoir; it could be delayed by clogged particles.

If your tap water has a large deposit level, we prefer you to set up an extra filtration system before using the filter.

It is so simple to check your tap water for too many sediment levels.

Fill a glass from the tap and keep it undisturbed on the countertop for 30 minutes.

Finally, if you get cloudy pollutants on the base of the glass that is a sign your tap water requires an extra filtration system.

Brita suggests filter replacement regularly with hard tap water, as hardness is one of the main reasons for high sediment present in the water.

There are also other better alternatives of Brita like the epic water filter, Zero water, Aquagear, and PUR filter.

2. Aeration from the faucet  

Increased agitation from the tap may be caused by slow filtering, mainly while filling the reservoir.

Keep in mind; to avoid opening the faucet to a full stream during the filling of the water filter pitchers.

So, fill your Brita pitcher smoothly with a slow and steady water stream to ensure an uninterrupted filtration process.

Never let the water stream fall directly on top of the filter which helps to improve its performance.

3. Air trapped in the filter

Sometimes, maybe air bubbles trapped in the Brita filter cause a slow filtration rate.

To verify, you can drop it in a water-filled bowl or jar. If your filter cartridge floats, that means air bubble presence in the filter.

To remove the air bubble.

1. Dip filter upright in cold water for 15-20 minutes. After that, wash the filter under tap water for 20 seconds and reinstall it correctly in the small pitcher.

2. If it doesn’t work, then keep the filter under the water and tap the filter smoothly against the bottom of the sink to loosen trapped bubbles.

To confirm it keep the filter in water if it sinks, which means bubbles are not available, and then install it in a Brita pitcher for use.

4. Delay in filter replacement.

You want to get clearly filtered water without trouble, and then you should change the filter at an appropriate time.

Although Brita filters are effective they could be really slow in filtering due to longlast use.

So, keep watching the filter change indicator to monitor the filter life and replace the new filter according to the indicator reading.

Keep reminded that there are separate setups for standard, Longlast, and Brita Stream filter.

You can know how often you should change your Brita filter to get better results

Brita Standard Filter2 months (every 40 gallons)
Brita Longlast Filter6 months (every 120 gallons)
Brita Stream Filter2 months (every 40 gallons)
Brita Water Bottle2 months (every 40 gallons)
Brita Faucet4 months (every 94 – 100 gallons)

5. Particles caught in the filter

If your Brita filter is dripping at a slow speed and you have visible particles in the longlast filter.

You can easily wash out the sediments by gently spraying water directly from the reverse direction.

Do this very carefully because there may be a chance to damage your Brita filter and may cause algae.

Keep in mind to let the water filter the tank fully before refilling the reservoir or pouring the pitcher.

6. Extreme usage of the filter

The use of extremely filtered water is the cause of replacement water filters sooner than its ideal time.

We can calculate filter changing time with the help of the table given above is merely an estimate.

If you are using a Brita Standard filter and use 40 gallons of drinking water within a month, then you need a replacement filter more often (at least monthly).

You always keep an eye on the filter life indicator to get uninterrupted clean water.

We advise purchasing filters in a quantity that is more affordable than a single purchase.

7. Decreased water pressure from the tap

If you are using a Brita faucet filter you should also check the tap water pressure to find the main cause of slow flow.

Brita faucet filter has many layers of filtration and uses tap water pressure to filter the water.

For some reason, if pressure is too slow, this may not flow correctly as a result, your Brita faucet filter will be interrupted.

To resolve this you need to check the tap water pressure.

If you find the Brita filter slower than usual, then firstly, check for pipe leakage and sediments in your pipeline.

You may clean the aerator of your faucet to discard debris and make it clean.

Bent tubing is also a cause of low water pressure, you may contact the plumber to resolve this.

8. Incorrect filter installation

If you have installed the filter incorrectly, then it may not work properly.

Mostly, it happens while changing the filter, so you should read the instruction manual carefully.

Even if you still can’t understand then ask a Brita representative to explain the filter installation correctly.

You always keep in mind that Brita standard and Longlast filter have different fitting techniques.

While fitting both filters, you should listen to a snap and click sound as you spin the filter into the place to ensure a perfect fitting.

Also, check and make sure about the O-ring/gasket seal should be seated correctly in its place in your Brita pitcher.

9. Wrong filter flushing

Brita filters need to flush before the use of the new filter. Fortunately, it is so simple to do.

For the faucet filter.

  • Install the faucet filter and turn on the faucet for five minutes to flush the filter, and it is ready to use.
  • Do not drink alkaline water while you flushing – discard or use it for plants.

For the Standard, Longlast, Stream, and Water Bottle filter.

  • These filters require pre-soaking in cold water for 15-20 minutes. After that, wash below running tap water for 30 seconds.
  • Then, install the filter, fill the tank and let the water drain through the filter completely.
  • Discard this water at least two times to ensure its quality.
  • There may be carbon particles in the primary few fillings but don’t worry it is common and harmless.

10. Clogged valves

Clogged valve

If you installed several valves, like a dual check valve or a pressure limiting valve.

You should also check and make sure the pressure-reducing valve is not in too low a position.

The pressure limiting valve can be clogged and affect your filter flow rate.

It can be connected to the water supply system before the filter so, make sure about this.

11. New home piping

In new homes and new piping installations sometimes there could be junk and dirt in it leftover from the build.

When you start to make alkaline water in the Brita pitcher from new piping, the junk and dirt can clog your longlast filter quickly, and your filtering speed gets very slow.

So, you may take care of it and flush it before using a water filter to avoid unwanted clogging issues.

You can talk to a plumber regarding this if you are installing a new water filter.

12. Expired filter

Brita water filter comes with various mesh levels and filtration to filter various sizes and quality of impurities.

It means Brita filters protect against the smallest contaminants too, by providing the best taste and clean water.

If your Brita filter gives brownish water with smell, different chemicals taste and longlast filter perform slow.

You can say “I am getting clearly filtered water from Brita filter which had same pollutants as like tap”

That is the time of changing the filter immediately.

13. Faulty indicator  

Mostly alkaline water filter pitchers have filter change indicators which help to know the accurate time to change the filter.

A green light indicates that the filter cartridge is working well, and the red indicates the time to change of filter.

If someway the indicator is not working correctly then the Brita filter change time runs out, and the longlast filter gets slowly clogged.

So you should change the old filter and reset the indicator by pressing the reset button for a few seconds.

When three lights start to blink simultaneously, then release the reset button, now it has done.

Always keep noticing the red dots on the right corner, it means that the indicator is operating well.

14. Defected filter

Normally Brita standard is preferred the replacement filter after every three months and the longlast every six months.

Rarely, in some cases, filters become defected for no visible cause and even before the estimated time.

You may confirm this by observing given conditions.

  1. Brita longlast slow filtration or too fast filter flow.
  2. Low water pressure.
  3. Water has an odd taste or muddy color.
  4. Presence of Bleach smell in the water.

If you face one of these before filter changing time, so no doubt your filter has some defective layer that is unable to filter.

To avoid any health-related problems, you should change the filter immediately.

15. Filtering out the wrong things like cold drinks, coffee, soda

lemon makes water alkaline

Some people try to filter out liquids like coffee, soda, and cold drink lemonade from their pitcher filter due to curiosity.

These liquids have many types of colors, particles, and chemicals, which make the Brita filter really slow draining.

You should avoid doing such type of thing with your filter.

The filter is for filtering water, and you should only use it for this.

FAQ about Brita longlast filter slow

How much longer does a Brita Longlast and Standard filter last?

Our long-lasting filters are made from BPA-free plastic, so they’re safe for your family.

They also filter up to 120 gallons and 6 months three times longer than standard filters.

If you bought your Brita® pitcher before 2019, your filter life indicator might not show the correct number of uses for the Longlast+ Filter.

You should replace the Brita Standard Filter (White) every 40 gallons or about every 2 months. 

How long does it take for a Brita pitcher to filter water?

All Brita standard and longlast filters take approximately 10-15 minutes to purify, and it is the best alternative to bottled water.

A Brita is the best water filter pitcher having a faster filtering time and is more affordable than other competitors like the epic water filter, Zero water, and PUR filter.

You can get instant filtered water from the Brita faucet filter, easy to install and easy to maintain.

In the end, we confirm that the water filtration time depends on different things such as filter mechanism and type of contaminant in water.

Why is my new Brita longlast filter so slow?

Brita longlast filter clogged due to many reasons like high sediment levels, incorrect installation, an old filter, and defective filter.

Always keep monitoring the filter change indicator correctly to make sure the accurate time of changing the pitcher filter.

You can use the Longlast in all Brita pitchers and dispensers easily. For more detailed information please have a look at Brita longlast filter review.

Why is my Brita faucet filter so slow?

We described above the cause of the slow Brita faucet filter is low water pressure.

There may be low pressure caused by pipe leakages, sediments, pressure-reducing valves, debris, or bent tubing.

The faucet filter works well with the correct pressure, the filter use pressure to push water from nonwoven material and carbon section.

Sediments and particles are caught in the nonwoven material from the water.

Carbon blocks filter out small contaminants including lead, copper, zinc, benzene, asbestos, chlorine smell, and other particulates.

So, it may not get pushed through the filter properly due to slow water pressure.

You may need to increase the water pressure to get resolve the filtration delay.

The age and condition of the filter both are important factors to determine the efficacy of your Brita faucet filter.

How do you fix a slow Brita longlast filter?

We described widely, in short, you can consider these solutions.

  1. Change the Brita filter at an appropriate time; you may monitor the filter change indicator to get a better result.
  2. Gently tap the Brita filter under the water or flush longlat filter under slow running water to release any trapped air bubbles.
  3. Keep the filter under the spray of water and clean it to eliminate debris and sediments.
  4. Flush water from the reverse side to push through the filter and clean the particle.
  5. From time to time may check your water quality to make sure that not too dirty.
  6. If you find low-quality water, then we recommend installing an extra filtration device.


Brita has good experience providing the best water solutions to their customers same as bottled water.

Many of us are using Brita longlast filter for a long time but rarely have slow filtering complaints.

We explained some possible causes of low filtration speed with their detailed solutions.

These solutions are effective with the Brita filter and resolve slow filtering issues for the longlast.

I hope you like this article and get something.

If you want to improve on this so, please let me know……..

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