PUR Water Filter Troubleshooting

If you’ve recently purchased a PUR Water Filter, you probably have some questions about troubleshooting it. You can maintain optimal performance and get the most out of your filter. It’s essential to check whether your filter is compatible with your system before starting troubleshooting. Also, check to ensure the filter’s expiration date hasn’t passed and isn’t clogged due to overuse. If your filter is expired or clogged, you’ll need to replace it before attempting any further troubleshooting steps.

Why Do You Need A PUR Water Filter?

A PUR water filter helps improve the taste and smell of your tap water and protects you from potentially harmful contaminants like lead, mercury, and chlorine. PUR also reduces common trace pharmaceuticals from municipal drinking water. These filters are essential to any home’s water system and can help keep you safe and healthy by providing clean water.

Why Do You Need A PUR Water Filter
A PUR Water Filter

PUR Water Filter Troubleshooting

If your PUR water filter has stopped functioning correctly or you’re having trouble installing it, you can take a few troubleshooting steps to get it back up and running as soon as possible.

PUR Water Filter Light is Not Working: If your PUR water filter light is not working, it could indicate an issue with the filter itself or the power supply. Check that the power cord is connected securely and that you have a fresh set of batteries in your device (for those models that require them). If this doesn’t solve the problem, try replacing the filter cartridge.

PUR Water Filter Leaking
Water Filter Leaking

PUR Water Filter Leaking:

  • Incorrect Installation: The most common issue with a leaking PUR water filter is incorrect installation. Make sure the O-ring is lubricated correctly and that it is installed evenly.
  • Filter Not Tight Enough: If your filter does not seem tight enough, you should check that it is correctly aligned in the housing. If not, twist the filter clockwise until it clicks into place and removes any excess air from the system. This can usually be done by holding a pressure release button down for 15 seconds or running water through the filter until the water runs clear. If your filter is still not tight enough, try replacing it with a new one and repeat the alignment process.
  • Debris In The Filter Housing Area: If you notice debris in the filter housing area, the filter needs to be replaced.
Debris In The Filter Housing Area
Debris In The Filter
  • To remove debris, unscrew the filter head from the wall and lift out the old filter cartridge.
  • Check for any debris or blockages in the valve and replace it with a new filter if necessary. Replacing the filter may still be necessary if there is no visible debris.
  • Replace the filter with a new one and secure it firmly in its housing.
  • Incompatible Adapter: If your Pur Water Filter is not working, it could be due to an incompatible adapter. Check the type of adapter that came with your filter and ensure you use the correct one for your model. If you have changed or replaced any parts of your filter, it could be causing compatibility issues. To avoid this issue, use only genuine PUR filters and replacement parts. If you are unsure which filter is compatible with your water filtration system, contact a certified plumber or the manufacturer for help.
  • Damaged Filter: If your filter appears damaged, broken, or leaking, replace it immediately. Do not attempt to repair the filter yourself, as this could cause further damage. Regularly inspect and clean the cartridge of your Pur Water Filter system to ensure proper performance.
Damaged filter
Damaged Filter
PUR Water Filter Slow Flow
Filter Slow Flow

PUR Water Filter Slow Flow:

  • Air Bubbles In The Filter: If you notice air bubbles, it could signify that your filter needs to be replaced. Air bubbles can reduce water flow and create an unpleasant taste. To ensure optimal performance, replace your filter every 3-6 months.
  • Filter Housing Blockage: If your filter appears clogged, it can lead to a lack of water flow. This is likely due to a blockage in the filter housing.
  • To fix this, try running cold water for about 10 minutes; sometimes, blockages can dislodge. If, after 10 minutes, there is still no flow, you will need to remove the filter housing and clean out any debris that has collected inside. After cleaning, replace the housing and run cold water through it for another 10 minutes to ensure it is clear.
  • Old Filter That Needs Replacing: If your PUR water filter has been used for several months, it may need to be replaced. When a filter needs replacing, the red light on your filter will usually come on. If this is the case, you should replace the existing filter with a new one.
    Old Filter That Needs Replacing
    Replacing filter

Step 1: Locate the black locking lever at the top of the water filter.

Step2: Pull the lever to unlock the filter and remove it from the unit.

Step 3: Take your replacement filter out of its packaging and insert it into the unit, ensuring it is firmly in place.

Step 4:  Lock the black lever back, and you should be ready to go.

PUR Filter Clogged: If your filter isn’t dispensing any water, it may be clogged. Check to see if there is a lot of sediment in the filter housing and replace the filter if necessary.

PUR Water Filter Low Pressure: If your PUR water filter is not dispensing water quickly enough, it may signal low pressure. To resolve this issue, check to ensure the faucet diverter valve is installed correctly and in the correct position. If it needs to be adjusted, carefully unscrew the diverter from the faucet by hand and move it into the correct position.

PUR Water Filter Light Is Not Turning Green
PUR Water Filter Light

PUR Water Filter Light Is Not Turning Green: If the light on your PUR water filter is not turning green, you may have a problem with either the filter cartridge or the power supply.

  • Check to ensure the power cord is securely plugged into an outlet. If it is and still isn’t working, try unplugging it and then plugging it back in to see if that fixes the issue.
  • Check the filter cartridge. The light should turn green when a new filter is installed and should stay green for about four months before needing to be changed again. If you’ve recently replaced your filter, but the light isn’t turning green, ensure you have it installed correctly.


PUR Water Filter Light Is Still Red: If the red light on your PUR water filter is still illuminated, it typically means the filter needs to be replaced.

PUR Water Filter Light Is Still Red
Water Filter Light Is Still Red

PUR Water Filter Overflows: If your PUR water filter is overflowing, it might be due to an air bubble in the line or a clogged cartridge. Try the following steps:

  • Step 1: Disconnect the filter from your faucet and flush it out with cold water to remove any dirt or debris that may have clogged your cartridge.
  • Step 2: Reattach the filter to your faucet and turn on the water. If it still overflows, there may be an air bubble in the line. To fix this, disconnect the filter and remove any excess air that has built up in the line.

PUR Water Filter Low Pressure: If your PUR Water Filter is experiencing low water pressure, there may be several possible causes.

  • Check for clogs in the filter. Clogs can reduce the pressure of your water filter and should be cleared if necessary.
  • Make sure the filter cartridges are still in good condition and not near their end-of-life date. Replace any old cartridges with new ones to increase water flow.
  • Ensure the filter is installed correctly according to the manufacturer’s instructions. Improper installation may reduce water pressure.
  • Check for any leaks in the filter that could be causing a decrease in pressure.
  • Make sure all connections are secure and tight to prevent air from entering the system and reducing water flow.
connections are secure and tight

Unfiltered and Filtered Water Mixed: If your water filter produces mixed unfiltered and filtered water, it may result from two possible issues.

  • The main issue could be that the bypass valve has become blocked. This blockage can cause some unfiltered water to mix with filtered water. Try disassembling your filter and cleaning out any blockages to remedy this issue. If this does not work, it is possible that the bypass valve needs to be replaced.
  • Another issue could result from a leak in your filter’s housing. This can cause unfiltered water to mix with filtered water as well. To check for this issue, inspect your filter’s seals and connections. If you find a leak, it is recommended to replace the parts as soon as possible so that your water remains safe for consumption.
    Unfiltered and Filtered Water Mixed
    Unfiltered and Filtered Water Mixed

PUR Water Filter Is Not Fitting: If your filter is not fitting correctly, you can take a few steps to resolve the issue.

  • Check that the filter is securely pushed into place in all directions until it can go no further. If it still does not fit, you may need to purchase a new filter, as the current one may be damaged or incompatible.
  • Check that the filter is correctly aligned with the water flow direction. All PUR Water Filters have an arrow indicating the direction of the water flow, which must be in line with the corresponding arrows marked on your faucet. If not, ensure that you adjust the filter accordingly until they match.


What’s The Lifespan Of A New PUR Water Filter?

What's The Lifespan Of A New PUR Water Filter
Lifespan Of A New PUR Water Filter

The lifespan of a new PUR water filter depends on the type and model you choose and your local water quality. Generally speaking, most filters will last two to three months before needing replacement.

Are There Any Side Effects Of Water Purifiers?

No, provided the water filter has been correctly installed and used by the manufacturer’s instructions. If you follow these guidelines, you can rest assured that your PUR water purifier won’t introduce any adverse side effects to your drinking water.

Can I make my PUR water filter smell better?

Can I make my PUR water filter smell better
PUR water filter smell better

Yes, you can make your PUR water filter smell better by regularly changing the filter. Replacing an old and worn-out filter with a new one can improve your drinking water’s taste, odor, and clarity. Additionally, it’s also essential to flush out any sediment or debris from the filter before use.


Troubleshooting your PUR water filter is not a difficult task. With the correct information, you can easily and quickly identify where the problem lies and take steps to resolve it. Don’t forget to check the user manual for detailed instructions specific to your filter model. Additionally, you may need to replace parts or cartridges periodically to keep your filter running smoothly. Following these steps should help you enjoy clean and delicious drinking water at home.

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