PUR Water Filters Troubleshooting and Maintenance Guide

Many households choose the PUR water filter for its clean, safe, and tasty water. To keep your PUR water filter functioning properly, you should know how to troubleshoot and repair it. This post will discuss common PUR water filter difficulties and recommend diagnosing and maintaining your system. Battery, water pressure, and flow will also be discussed. This guide will help you maintain your PUR water filter and provide clean, safe drinking water.


As more individuals realize the health concerns of drinking tap water, PUR water filters are becoming more popular. These filters eliminate lead, mercury, and pesticides from drinking water, making them a reliable way to purify it.

PUR water filters remove over 70 tap water contaminants. These filters eliminate toxins and pollutants affecting the kidneys, liver, reproductive system, and central nervous system. PUR water filters remove these pollutants to enhance water quality and safety.

Despite their benefits, PUR water filters can nevertheless have issues. PUR water filters sometimes leak poor flow and has indicator light troubles.

This guide will help you fix these difficulties and maintain your PUR water filter. This article will help you fix your water filter if it’s leaking, slow, or has other issues. This guide will help you maintain your PUR water filter for years.

Causes of Slow Flow Rate

Need to replace the filter

PUR water filters often have sluggish flow rates due to filter replacement. Filter contaminants can slow water flow over time. When the filter needs replacing, the indication light usually lights up. Keep a spare filter on hand to avoid losing filtered water while waiting for a replacement.

Trapped air in the filter cartridge

Trapped air in PUR water filters can also restrict flow. Air bubbles restrict water flow during filtration. To remedy this:

  1. Remove the filter and submerge it for 15 minutes.
  2. After 15 minutes, touch the filter to release air.
  3. Stand the filter in cold water for 30 seconds. This should release air and enhance water flow.

Cloudy water from unflushed or incorrectly installed filters

Cloudy water results from improper filter flushing or installation. The filter may not be primed and include trash or sediment that clouds the water. Flushing the filter with cold water for several minutes and checking its installation can fix this issue.

Low-pressure or high-pressure water:

Low or high-pressure water can slow flow. Low pressure may not force water through the filter. High pressure can ruin the filter. Check the water pressure to fix this issue. If not, adjust the pressure or call a plumber.

Blockage from trapped sediment

Filter sediment reduces water flow. To fix this, remove the filter and inspect for sediment. Clean the filter or replace it if it’s disposable.

Clogged filters, trapped air in filter cartridges, hazy water from unflushed or poorly placed filters, low-pressure or high-pressure water, and retained sediment can decrease water flow. Before fixing this issue, check the filter and find the cause.

Common Problems with PUR Water Filters

Slow Water Flow or Overflow

PUR water filters frequently overflow or have poor water flow. Clogged filters, improper installation, and low water pressure can cause this. Check the filter for clogging or dirt to solve this issue. Reinstall or check the water pressure to see if the filter is clean. Sometimes the filter must be replaced.

Leaking Filter

PUR water filters often leak. A loose filter, damaged filter, or seal issue can cause this. Check the filter for damage to fix this issue. Reinstall or check the water pressure if the filter seems good. Sometimes the filter must be replaced.

Filtering Problems

Some filters have trouble filtering certain pollutants or water. Clogged or unclean filters, improper installation, or design or construction issues might cause this. Check the filter for clogging or dirt to solve this issue. Reinstall or check the water pressure to see if the filter is clean. Sometimes the filter must be replaced.

Mixing Filtered and Unfiltered Water

Unfiltered water can combine with PUR water filters. The filter may malfunction or be improperly placed. Check the filter for damage to fix this issue. Reinstall or check the water pressure if the filter seems good. Sometimes the filter must be replaced.

Indicator Light Issues

PUR water filters have an indicator light that tells you when to change them. The filter’s light is green when it’s working, yellow when it’s dying, and red when it has to be changed. The light may malfunction or display the wrong color.

Dead batteries can cause lights to fail. Replacing a dead battery should cure it. If the light is red, the filter may need to be replaced.

Use the user handbook to reset the indicator light. Pressing or turning a knob is typical. After resetting the light, put water through the filter for a few minutes to test it.

After investigating, the indicator light may indicate a filter defect. Contact the manufacturer or replace the filter. Regardless of the indicator light, the filter should be replaced if it is not working properly.

Troubleshooting a Blinking Red Light on a PUR Water Filter

PUR water filters with blinking red lights may have several difficulties. Check the filter to start troubleshooting. Check the filter’s fit and connections. If everything seems good, reset the filter. A filter or housing button usually does this.

If the filter and housing are fine and the red light keeps blinking, water pressure may be the problem. A blinking red indicator indicates low water pressure, which can damage the filter. Check your home’s water pressure with a gauge or pressure test kit to fix this. Contact your local water utility to inspect and adjust low pressure.

Clogged filters can generate blinking red lights. A red light blinks when the filter is clogged and cannot filter water. Remove the filter and clean it per the manufacturer’s directions to repair this. Replace a highly blocked or broken filter.

If the troubleshooting methods above fail, the filter housing or water source may be the problem. For help, call the manufacturer or a plumber.

Leakage Issues

PUR filters leak, which is frustrating. PUR filters often leak due to loose or tight connections. Water may leak from the filter and damage your sink or countertop. First, examine the connections and tighten or loosen them to fix this issue. Check the filter for cracks and alignment with the faucet.

Checking connections and maintaining the filter prevents leaking. Cleaning, changing, and avoiding hot water with the filter are examples. Choosing the proper PUR filter size for your family helps prevent leakage and malfunction.

Filter Maintenance and Replacement

Filter maintenance and replacement are essential for PUR water filter effectiveness. Filter replacement is crucial to upkeep. The filter becomes blocked with contaminants and cannot filter water.

Water quality and usage determine filter replacement. Replace the filter every two to three months if you use a lot of water or live in a poor water location. You can go six months between filter replacements if you have modest water usage and acceptable water quality.

Installing and flushing a new filter is crucial. Install by following manufacturer directions. Flushing the new filter with cold water for 5 minutes removes carbon dust and optimizes its function.

Other maintenance and lifespan-extending measures include replacing the filter regularly. Avoiding hot water protects the filter. Clean the filter periodically to avoid obstructions and maintain water flow. Following these recommendations and maintaining your PUR water filter will ensure it provides clean, safe drinking water for a long time.

How to Properly Check if Your PUR Water Filter is Working?

Ensure your home’s main filter generates clean, healthy water. Slow water pressure decline, unusual sounds from faucets or drains, bad-tasting water, and a change in water taste, odor, or color may indicate a water filter malfunction.

To test your water filter, test the water before and after it flows through it. Performance testing is the best technique to evaluate filters. The Full Performance Test and Post-Treatment Test can do this.

The Full Performance Test compares pollutant levels in two water samples before and after filtration to evaluate the filter.

The Post-Treatment Test checks water quality after filtration but doesn’t evaluate the filter. An accredited water testing institution can provide water test kits. Choose a test that matches the contaminants the filter claims to remove.

Call a plumber to inspect, repair, or replace the water filter if you see any of these indicators. Self-repair may worsen the situation and lower plumbing water pressure. Even if your water filter works, it should be replaced every 3–6 months, depending on the type and volume of water consumed. Replacing the filter regularly keeps it clean and unclogged.

Additional Tips and Advice

  1. Maintenance: Your PUR water filter needs regular maintenance to work properly. Checking for leaks, inspecting the filter for obstructions, and replacing the filter cartridge as needed. Maintaining your water filter ensures clean, safe drinking water and extends its lifespan.
  2. Optimizing PUR water filters: Replacing your water filter cartridge regularly is one of the best ways to maximize its performance. After installation, running water through the filter for a few minutes and flushing it with cold water can eliminate trapped air and debris, speeding up the water flow.
  3. Investing in a high-quality, long-lasting PUR water filter is one of the best methods to save money on your water filter. PUR water filters are long-lasting and cost-effective.
  4. Preventing clogged filters: Change filters according to the prescribed timetable. Avoid unclean water and flush the filter with cold water before and after installation to remove dirt, debris, and sediment that may clog it.
  5. PUR water filter safety certifications: Check your water filter’s safety certificates. PUR water filters are NSF-certified and tested to eliminate hazardous pollutants.
  6. PUR water filters improve water taste: PUR water filters remove pollutants, chemicals, and odor to improve water taste. A carbon block filter removes chlorine and other volatile organic chemicals that might affect flavor.
  7. PUR water filter models: PUR makes pitcher, faucet-mounted, countertop, and under-sink water filters. Each model has varied filtration capabilities and filter cartridges. Choose the finest one for your needs and water quality.
  8. How to Choose a PUR Water Filter Size for Your Home: Water quality and household size determine water filter size. A faucet-mounted or pitcher filter is sufficient for up to four people, but bigger households or homes with severe water contamination may need an under-sink or whole-house filter.


Finally, PUR water filters can let us drink clean water every day. Even the greatest water filters can have sluggish flow, leakage, and indication light difficulties. This article provides troubleshooting and maintenance recommendations to maintain your PUR water filter and provide safe drinking water.

Remember to replace your filter every 100 gallons or three months and maintain it regularly. Use the filter as instructed, cleanse and maintain it, and buy a filter that meets your water needs to maximize its efficacy. If you need help, contact customer support and replace or buy a new filter.


What causes a slow-flowing PUR water filter?

Clogged filters, incorrect installation, and worn filters prevent PUR water filters from running slowly. Sediment, silt, and other contaminants can clog a filter, making water flow harder. The improper installation might restrict flow because the filter may not be firmly attached to the system, or the connections may need to be tight enough. When a filter reaches its end of life, contaminants block its pores, slowing water flow.

How often should you replace the filter for different models of the PUR system?

Different PUR system versions require filter replacement every 2-3 months or 100 gallons (for faucet filters) or 2 months or 40 gallons (for water filters) (for pitcher filters). The replacement schedule depends on the filter type, household water use, and water quality. Replace the filter regularly to keep it clean and unclogged.

How to remove air bubbles from a filter in a PUR system?

Turning off the water supply and disconnecting a PUR system filter can remove air bubbles. Tap the filter lightly to expel air bubbles. Run water through the filter for a few minutes to release air bubbles. If the problem persists, ensure the filter is correctly installed, connected, and filled with cold water.

What are the different types of PUR water filter systems?

Faucet and pitcher PUR water filters exist. Faucet filtration devices filter water directly from the faucet. The pitcher filters filter water as it enters the pitcher after being filled. Both filters remove lead, iron, and mercury from water, but faucet filtration systems are more efficient and can handle more water.

How to fix a clogged water filter in a PUR system?

Turn off the water supply and disconnect the filter to fix a clogged PUR water filter. To remove dirt and debris, flush the filter with high-pressure water or use a cleaning solution. A heavy obstruction may require filter replacement.

What is the cause of cloudy water in a PUR system?

Air bubbles, clogged filters, or sediment in the water supply can create hazy water in a PUR system. Disconnecting the filter from the system and gently tapping it releases air bubbles. Replace blocked filters. Contact the manufacturer or a specialist if the problem persists.

How to ensure the proper installation of a PUR water filter?

Follow the manufacturer’s instructions and use the right tools to install a PUR water filter. Check for leaks, line the filter, tighten the connections, and install the faucet filter’s adaptor and rubber ring.

What to do if the PUR system water pressure is too high or low?

A blocked filter, incorrect installation, or water supply issues might cause PUR system water pressure concerns. If the pressure is too low, check the filter for obstructions and replace it. If pressure is high, examine connections and filter installation. If the issue persists, consult a professional or manufacturer.