Quick Tips: How to Fix a Slow Water Filter?

Category: Pur Water Filters
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If you have a slow water filter, there are a few possible causes and solutions. Here are some quick tips to help you fix the problem:

  1. Check the water filter cartridge to see if it is clogged. If it is, replace it with a new one.
  2. Check the water filter housing for any debris or sediment that may be clogging the filter. If you find any, clean the housing and the filter cartridge to remove the debris.
  3. Check the water pressure coming into the filter. If it is too low, this can cause the filter to become slow. To fix this, try cleaning the inlet screen on the filter housing, or increase the water pressure if possible.
  4. Check the filter housing for any leaks. If the housing is leaking, this can cause the water to bypass the filter, which can make the filter appear slow. To fix this, tighten any loose connections or replace any damaged parts.
  5. If you are still having problems with a slow water filter, you may need to call a professional plumber to diagnose and fix the problem.

Do you use filters when you first get them and they get painfully slow while you continue using them? Our family has been using a PUR pitcher for decades and loves them, but I bought another box of filters that looked like a bad deal.

It appeared fine initially but suddenly it began to filter slowly at an incredibly slow rate. It took me nearly two hours to fill up the cup!

I’m not sure that’s a good thing for our water-guzzled family. We have no problems with Google and I thought that Google might fix it.

Is that really the only solution? Thanks to some wise Amazon reviews, a friend learned that slow filters often mean water vapor is trapped. Other possible reasons are.

10 Reasons Why Your PUR Filter is Too Slow

1. Old filter that needs replacing

If you can’t remember the last time you replaced your PUR water filter, it’s probably time you consider doing so. Most manufacturers recommend changing your water filter every six months, but it really depends on how frequently you use it and what it filters out of your water.

Because carbon has the ability to absorb many of the chemicals found in water, it is used in most water filtration systems.

Thanks to the development of solid carbon block filters, water takes longer to filter, giving the carbon more time to absorb bacteria, pesticides, and other contaminating substances that can cause illness.

Failure to replace these carbon block filters according to the manufacturer’s instructions can jeopardize the absorption of harmful substances and force them into your drinking water.

Replacing your filter every six months prevents sediment buildup, which slows the filter and prevents it from filtering effectively.

Changing your water filter is simple, and all filters come with simple installation instructions. Most filters can be removed by turning the filter 1/4 turn to the left and pulling it out of the housing. To replace the filter, simply insert a new filter into the housing and turn 1/4 turn to the right.

2. Clogged filter

For many people, clogging is a common issue.

The pores of the membranes will trap sediments, but if your tap water contains a lot of sand, the membranes will become clogged or torn. If your filter isn’t working properly, you might as well not have one at all.

A clogged filter will slow the flow of water to the filter, extending the filter time and eliminating the need to filter the water.

You will require routine maintenance. When this filter becomes clogged, the system slows down. It causes a backlog of incoming water and can be extremely costly if it ruptures.

3. Flushing the filter incorrectly (or not at all)

A water filter cartridge is inserted into a water filter or filtering system and serves as the actual filter.

It removes small particles from the water, making it drinkable or making it taste better. Cartridges are designed differently depending on the product of your water system.

So be mindful of the water filter you use, as cartridges must be replaced on a regular basis to ensure that your water is properly filtered.

Replacement cartridges for water filters typically include usage recommendations as well as the amount of time the cartridge can safely stay in the filter.

To flush out the trapped carbon particles, the cartridges must be washed and flushed with a lot of water.

PUR water filter cartridges should be washed to flush out the trapped particles that can make the filter to be slow. After washing or cleaning, you can reinstall it back into the system.

4. Mineral damage

Hard water is water that contains high levels of dissolved calcium, magnesium, and other mineral salts such as iron.

Remember that if you are using tap water it will likely have dissolved solids such as calcium and magnesium that can clog up your filter more quickly than you’d like.

If you are using filtered water, keep in mind that the filter needs to be replaced after a while, just like your filter at home.

We’ve all seen the white film that builds up on appliances. It’s a telltale sign that water quality is not good.

If you see it on one appliance, it has probably started building up in the filter. The victims of limescale build-up include the shower head, sinks, dishwasher, and any place your water comes out of.

The blockage caused by mineral buildup is slowing down your water filter. To flush out the mineral deposit trapped inside the filters, carbon the cartridges must be washed and flushed with a lot of water.

5. Incorrect installation

It is possible that the new filter is not completely seated in the housing. Check that the filter was properly installed in the water filter. If the filter is not properly installed, it may be necessary to physically press the filter into the housing until it snaps.

6. Filter Housing Blockage

This may also mean that the water flow was restricted by the two curved holds inside the PUR water filter.

The solution is simply to remove the filter and stir vigorously until you hear the granules moving inside.

You may also physically disassemble and carefully wash the water filter housing by hand and rinse well.

7. Air bubbles in the filter

Air bubbles in the filter are a common problem that can slow down the filtering process.

Because of the continued siphon action, the filters can accumulate air pockets even when the faucets are closed.

This causes the filtered water to resemble milk or clouds. If the water remains stationary in a vessel or a carrier, the bubbles in the filtered water that cause the cloudy or milky appearance vanish over time.

Air pockets in filter cartridges can be removed by running water through the cartridge while turning it upside down.

8. High water pressure

9. Hot water damage

Filtering hot water through the filters is not recommended because it may cause the seals and tubes used in the filters to become soft and leak.

This is more likely in countertop filters than in shower water filters, which are less susceptible to such damage.

10. Low water pressure

Low pressure is usually caused by having to turn on two different plumbing fixtures at the same time, such as the outside garden hose, the kitchen/bathroom sink, the toilet, or even the shower.

Although your pressure may be adequate when only one fixture is in use, you will definitely notice a decrease in water flow when the second fixture is turned on. In most cases, low water pressure affects you in numerous other areas of your home.

Check for an obstruction inside the water filter if low pressure is affecting your water filter.


If everything else fails, contact customer care. Their customer service seems to be second to none, and they seem to be willing to help their customers with any issue that they might have.

Some customers’ reports indicate that they were handled with. The care reps were kind enough to chat regarding issues, and they resolved the issue right away. They were friendly, helpful, and genuinely seemed to care about taking care of their customers.

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