It is not dangerous to drink the water, but you should not drink the first 1 to 4 gallons after changing your filter.
In general, though, it's a good idea to run water through a new filter for at least a minute or two before drinking it, just to be safe.
Yes, specific water filters can remove Cryptosporidium. Because this parasite is typically between 4𝜇m and 6𝜇m in size, physical filtration is highly effective if the filter pore size is small enough.
Run two to four gallons of water through the new filter. This helps prevent your water dispenser from sputtering and clears impurities left over from manufacturing. Check for leaks around the filter.
Always flush a new filter to remove air and loose carbon fines: Run and discard 3–5 gallons.
After replacing your refrigerator water filter, you must flush the system to remove air and loose carbon, reset the indicator light, and discard the first batch of ice.
While the 6-month timeline is a standard recommendation by manufacturers, the exact answer depends on your usage and your home's water quality. For light usage with city water, you can often stretch it to 9–12 months, but going much longer risks contaminated water and appliance damage.
After changing a water filter, you should run 2 to 4 gallons of water through the system. This process purges trapped air pockets and flushes out any loose carbon dust (or manufacturing residue) that makes your initial glasses of water look cloudy or taste unappealing.
The buildup of organic matter can begin to impact your overall water quality, leading to unpleasant odors and tastes. Continuously drinking water that's been contaminated by harmful bacteria can lead to severe health risks, including diarrhea, nausea, fatigue, and an overall weakened immune system.
Diarrhea, vomiting, stomach cramps, and weight loss are the most common symptoms. Dehydration is the main complication. People who have a healthy immune system usually recover without treatment. People with a weak immune system may get a more serious infection and need supportive medical care.
There is no single state with universally the "worst" tap water, as quality varies by utility. However, based on high contaminant counts, EPA violations, and population exposure, Texas and New Jersey consistently rank at the bottom.
Find out how parasites might be getting into your water supply
Fridge filters are designed to handle basic impurities like chlorine and sediment, but they typically don't remove more harmful contaminants such as lead, PFAS, pharmaceuticals, or pesticides. If your water contains these contaminants, a refrigerator filter may not provide the protection you need.
Immediate Actions After Drinking Contaminated Water
There is no single “#1” healthiest water, as the ideal choice depends on your specific health and hydration needs. However, experts generally agree that naturally mineralized spring water and carbon-filtered tap water (especially when remineralized) are the best daily options.
You should run 3 to 5 gallons (or run the dispenser continuously for about 5 minutes) immediately after installing a new refrigerator water filter. This process flushes out trapped air bubbles and loose carbon dust, which prevents sputtering and ensures the water tastes crisp and clean.
Yes, it is safe to drink the water immediately, but it is not recommended. Manufacturers advise flushing a new filter by running 2 to 4 gallons of water through it first. This removes loose carbon dust and trapped air, preventing poor taste and cloudy appearance.
You should run 2 to 4 gallons of water through a new fridge filter before using it.
As time passes, minerals and particles accumulate and eventually plug up the water filter. Without proper cleaning, a dirty water filter can clog up with so much debris that water can't get through it. When this happens, your machine can freeze up completely, meaning your ice machine won't be able to produce ice.
Most refrigerator water filters last 6 months or filter about 200 to 500 gallons of water, whichever comes first. After this point, the carbon inside the filter loses its ability to trap contaminants effectively, and the moist environment can become a breeding ground for bacteria.
Run 128 to 512 ounces (1 to 4 gallons) of water through your new fridge filter. This flushes out manufacturing residue, trapped air, and loose activated carbon particles.
When your fridge water runs slow after a filter change, it is usually caused by trapped air in the line or an improperly seated filter.
The filter should be replaced more frequently if the flow of water to the icemaker or dispenser decreases. Note: The water supply to the refrigerator does not have to be turned off when replacing the water filter.