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

Regular water filter testing is crucial to household water safety. To remove impurities and pollutants, your water filter must be checked periodically. Test the water before and after filtering.

PUR water filters remove lead, mercury, and iron. Pitcher and faucet filtration devices are available.

This article details how to test your PUR water filter. This includes PUR water filter maintenance, performance testing, and troubleshooting.

Understanding the Indicator Lights

Indicator lights on the PUR water filtration system indicate filter performance and replacement. The green light means the filter is working and eliminating pollutants.

The yellow light alerts you to update the filter. After 100 gallons, it flashes. The red light signals a dangerous malfunction or a contaminated filter. To ensure clean, safe drinking water, solve red light concerns immediately.

Significance of red blink

  • Red blinks indicate filter issues. Particles on the filter, broken electric circuits, or not resetting the filter can cause it.
  • Filters clogged with particles might create false alarms. Regular filter cleaning and rinsing prevent this.
  • Red blinks might also result from electrical issues. In this instance, only a neighboring PUR shop can replace the circuit.
  • Not resetting the filter can produce a red blink. To ensure proper function, follow the directions for your specific filter’s resetting method.
  • To keep the filter eliminating pollutants, fix red blinks immediately.

Causes of Red Blink

Particles on the filter cause PUR water filters to blink red. These particles can falsely alert the filter to replace it. This can occur when a fresh filter needs to be thoroughly cleaned or when dirt and particles build up on the filter from daily use.

A broken electric circuit might also cause a PUR water filter to light red. When the filter indication light circuit fails, this can happen. Since this is a sophisticated issue that requires a professional, the only remedy is to replace the circuit at a nearby PUR shop.

Filter not resetting: A PUR water filter’s red blink may be caused by a misreset filter. This can happen if the filter is not properly reinstalled or the reset button is not pressed. By following the filter reset instructions, this may be fixed easily.

Other causes: Water supply issues or pollution may generate a red blink on a PUR water filter. Instead of replacing the filter, consult an expert to find and fix the problem.

Pay attention to the indicator lights and fix any red blinks to test your PUR water filter properly. This ensures safe, pure water and excellent filter performance.

Home Water Filter Testing: How?

Full Performance Tests are best for water filter testing. Water samples are taken before and after filtration. Compare pre- and post-filtration pollutant levels to assess filter efficacy. Without adding pollutants to treated water, metrics should decrease significantly.

Steps for Post-Treatment Test

Post-treatment tests can assess your water filter. This process involves testing filtered water for safety after filtration. After filtration, you can see the toxins in your drinking water. This cheaper test checks water safety, not filter function.

Choosing the Right Testing Kit

Choose a water source-appropriate testing kit when ordering. Use the Essential, Advanced, or Extended City Water Test for city water. Try the Essential, Advanced, or Extended Private Well Water Test. Choose a filter test based on the contaminants it claims to remove.

Test Preparation:

After replacing a filter or cleaning your system, test for the most accurate results. This ensures optimal filter performance data. If you’re worried about filter durability, test it after several weeks or months.

Post-Maintenance Filter Issues:

Filtering can cause complications. If your garage’s point-of-entry device treatments your water and your home’s lead pipes are ancient, your “treated” water may become recontaminated. Using an improper filter to remove pollutants is another concern. Understanding water treatment and filter types are crucial.

Causes of Filter Failure

Understand why filters fail. A filter may be worn out, fractured, shredded, or “used up,” allowing contaminants to cover its medium. Microbial growth can block adsorption, generate pollutant conduits, or overload the filter. Water filter testing can identify these issues.

Maintenance and Troubleshooting

PUR water filters need regular maintenance and troubleshooting. Important tips:

Resetting the filter

Resetting your filter may help if it’s malfunctioning. Pushing or flicking a switch usually does the trick. Consult your user handbook for filter reset instructions.

How often to change the filter?

PUR water filters should be changed every three months or 100 gallons. Check the filter manufacturer’s recommendations for your filter type and water quality. The filter has to be changed when it turns yellow.

The water filter light is not working

Your PUR system’s water filter light may not work in idle mode. Holding the button for several seconds fixes this. Released buttons light up. If it doesn’t work, you may need expert help.

Tips for maintaining and troubleshooting PUR water filters

Regular maintenance and troubleshooting will help your filter last longer and perform properly. This can involve cleaning the unit’s exterior with mild dishwashing soap, checking the filter for particles, and watching for strange water scents, tastes, and colors. Consult the user handbook or manufacturer for filter issues.


Finally, water filter testing is essential for family drinking water safety. PUR water filters remove lead, mercury, and iron. This article covered performance testing, diagnosing and fixing filter faults, and proper maintenance and troubleshooting for PUR water filters.

The PUR water filtration system’s indicator lights indicate filter performance and replacement. A red blink signifies a dangerous malfunction or a contaminated filter. To ensure clean, safe drinking water, fix red light concerns immediately. For issues, seek a professional. The filter’s handbook and the PUR website include more information.