What happens if you don't change your water filter?

Author: Mrs. Tatyana Ferry  |  Last update: Tuesday, December 23, 2025

Minerals, microbes and various chemicals may contaminate the water supply. Neglecting your water filters can lead to system malfunctions, clogging, and compromised water quality. It is advised that you change your filters as instructed by your manufacturer.

What happens if you never change a water filter?

Over time, minerals and particles build up and eventually clog the water filter. Failure to clean it properly can result in excessive debris, obstructing the flow of water.

What happens if you drink water from an old filter?

It can be dangerous to drink filtered water after the water filter needs to be replaced because bacteria builds in the filter over time and then the water which subsequently flows through the bacteria-filled filter will be contaminated with the same bacteria. The longer you wait, the more bacteria collects.

How long can you go without changing your water filter?

Filters in residential settings should be changed every 6 to 12 months. Reverse osmosis, membranes, and additional alkalisers only need to be changed ever 2 years or 4 years, respectively.

Can you get sick from not changing the refrigerator water filter?

Consume Harmful Bacteria

If you neglect to change your refrigerator's water filter, it will become clogged with these substances and fail to do its job, causing these harmful microbes to get into your water. From E. coli to fecal coliform, your health can be impacted.

What Happens If You Don't Change Your Filter?

What happens if you drink water from a fridge with a bad filter?

Contaminants and Health Risks

A neglected water filter becomes a breeding ground for bacteria, mold, and other harmful microorganisms. These contaminants can cause various health problems, ranging from mild gastroenteritis to severe respiratory infections.

What happens if you keep using an old water filter?

Depending on your filter type, after 2 months, 6 months or 6 years, your filter could be covered in bacteria, rendering it unable to perform up to optimal spec, and turning it into a petri dish for all other contaminants to thrive, and those very contaminants that you tried to prevent from entering your house will be ...

Do I really need to change my refrigerator water filter?

Because they're susceptible to the build up of dirt and debris, old fridge water filters may not be able to prevent contaminants from tainting drinking water as well. To ensure drinkable, fresh tasting water for your family, be sure to change your fridge's water filter every six months.

What happens if you don't replace filter?

Unhealthy and Poor Air Quality

Unkempt air filters may negatively affect indoor air quality by spreading pet dander, dust, and other allergens throughout your home. This may lead to irritated eyes, nose, and potentially breathing problems.

How do you know if your refrigerator water filter is bad?

Signs it's time for refrigerator water filter replacement include:
  1. Water coming from the fridge dispenser tastes or smells bad.
  2. There are black specks or debris in the water.
  3. The water has a cloudy appearance.
  4. The water filter light turns on.
  5. It's been more than a year since the last water filter replacement.

Can bacteria grow in water filters?

Filters can be a good place for bacteria to grow because there is plenty of water present, filters are dark and warm, and bacteria can feed on the organics present.

Can a water filter last 5 years?

Most household drinking water filters last between 6 to 12 months and need to be changed to maintain effectiveness. However, some filters like those in pitchers have shorter lifespans and may need to be replaced every 1 to 2 months. On the other hand, some whole house water filters can last between 5 to 10 years.

How much water should I throw out after changing my filter?

Once your filter is replaced, run four gallons of water through the line to properly flush the new filter.

What happens if you don't change water filter in jug?

It actually may be worse for you to drink from a pitcher with an unchanged old Brita filter than from the tap because Brita filters, over time, will grow bacteria.

What are the side effects of filtered water?

Although filters can be helpful in removing harmful chemicals from our water, they sometimes strip away beneficial minerals too. These include magnesium and calcium, as well as iron and manganese, which are eliminated to make water softer and prevent discolouration, respectively.

Why is water dirty after changing filter?

If your filters aren't properly rinsed, they can produce cloudy water for weeks after installation. This is due to air and loose carbon being flushed through the system. If you're experiencing this, don't worry, it's an easy fix.

Is an old water filter worse than no filter?

Reduced Efficiency: As filters get clogged with contaminants, their efficiency in removing impurities decreases. This means you might be drinking water that's no cleaner than the normal tap water or in some cases, even worse.

How do I know if my filter needs to be changed?

Signs Your Furnace Filter Needs Changing
  1. There is noticeable discolouration on the filter.
  2. You can see the buildup of dirt and dust.
  3. You find your home needs dusting frequently.
  4. It seems your HVAC system is cycling longer.
  5. You realize it's been several months since you've replaced your filter.

What happens if you don't change your pur water filter?

Every water filter comes with a manufacturer-recommended lifespan, typically measured in gallons filtered or time used. Ignoring these recommendations can lead to a significant decrease in water quality, as an expired filter loses its ability to effectively remove contaminants.

What happens if I don't replace the water filter?

An unchanged water filter can produce water with a foul odour or a strange taste. A dirty or clogged water filter can also affect the mechanical actions within your refrigerator, such as the Ice dispenser. A refrigerator with a water dispensing function is a significant investment and really should be treated as such.

Is it OK to use off brand refrigerator water filters?

Consumer Reports have shown that while some off-brand filters can perform reasonably well, brand name filters consistently outperform their generic counterparts in both filter quality and water purity.

How often should a water filter be changed?

Ultimately, changing your water filter every 12-24 months can help you save money in the long run while ensuring that your family has access to clean and safe drinking water. Changing water filters every 12 to 24 months provides peace of mind for homeowners and their families.

How long can a water filter sit unused?

While unused water filters don't have an expiration date, we don't recommend stockpiling them excessively because natural degradation can occur over time, and filter manufacturers often introduce new and improved alternative filters.

What happens if you drink water with a bad filter?

The Effects of Contaminated Water

The effects can range from an upset stomach to long-term health issues, depending on what contaminants lurk beneath the surface. Invisible metallic contaminants may silently accumulate in your system, damaging vital organs over time.

How to know if a water filter is bad?

So we've put together a simple guide for you to tell whether this might apply to your cooler or water filter system.
  1. 1 - Reduced Delivery Volume. ...
  2. 2 - Water Tastes or Smells Bad. ...
  3. 3 - Strange Noises or Air Bubbles. ...
  4. 4 - Discoloured or Cloudy Water. ...
  5. 5 - Expiry Date or Visual Indicators.

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