Water Filter Cartridge

Your Whole Solution of Water Filter Cartridges

Filson water filter cartridges are usually provided in numerous common types: string wound, melt-blown, membrane, pleated, stainless steel, carbon block, ceramic. Due to optional food-grade materials, you can apply them in a broad range of applications like the food and beverage industry, dairy products pre-filtration, etc.

In addition to industrial applications, naturally, Filson water filter cartridges can also be applied in aquarium filtration systems and municipal water supply systems. Regardless of the application environment, it can provide a proper filter effect based on an extensive micron rating range of 0.2-1000.

In this section, the most popular Filson water filter cartridges are shown below for you to choose from based on filtration accuracy, material, application, and more.

Water Filter Cartridges

String Wound Filter Cartridge
Filson string wound filter cartridges are made of cords wound around a core, contributes gradually smaller diamond shape channels from out to in, provide progressively increasing precision from 0.5 to 150µm.
Melt Blown Filter Cartridge
Filson melt blown filter cartridge, also called pp spun filter cartridge, is fabricated from non-woven polypropylene fibers spun and melt blown into a rigid structure with out support cage/core.
Membrane Filter Cartridge
Filson membrane filter cartridges are mainly adopt PTFE and PES as raw materials, are widely applicable for sterile filtration.
Pleated Water Filter Cartridge
Filson pleated water filter cartridge adopts cellulose polyester, non-woven polyester, polypropylene or fiberglass as raw material, and be formed into pleated surface for extended filtration area 3x of flat ones.
High Flow Water Filter Cartridge
Filson high flow water filter cartridge always adopts a lager inner core of 6” than traditional cartridges that allows higher flow rate capacity up to 500GPM. Moreover, replacements of 3M, Pentair or Parker high flow water filter cartridges are offered as well.
Stainless Steel Water Filter Cartridge
Filson stainless steel water filter cartridges are resist to corrosion and offer premier mechanical strength, able to withstand much higher pressure than PP/PE/fiberglass filter cartridges.
Carbon Water Filter Cartridge
Filson carbon water filter cartridges are typically used for improving odor, color and taste of low impurity content water.
Pool Filter Cartridge
With the standardized size design, Filson pool water filter cartridges can perfectly replace most pool filter cartridges of brands on the market.
Drinking Water Filter Cartridge
Filson drinking water filter cartridge is generally used in small particle removal from low impurity water and can last for around 6 months.
Replacement Industrial Water Filters Cartridges
Filson fabricates a variety of replacement industrial water filters cartridges contain Parker filter cartridge, Pall filter cartridge, 3M filter cartridge, Pentair filter cartridge.
Big Blue Water Filter Cartridges
Big blue water filter cartridges in standard diameter of 4.5”, lengths such as 10”, 20”, and numerous materials are all provided by Filson.
Whole House Water Filter Cartridge
Filson whole house water filter cartridge is effective in filtering and capable to work about 6 months or filtering water up to 30000 gallons.
Ceramic Candle Water Filter
Filson ceramic candle water filter with nominal filtration accuracy about 1 micron permits reduce mold, bacteria and some viruses with efficiency 99.99%.
10 Inch Water Filter Cartridges
Filson 10 inch water filter cartridges fit nearly all 10 inch filter housings and can be applied in whether pre, medium or critical filtration.
20 Inch Water Filter Cartridge
Filson 20 inch water filter cartridges are suitable for wide range of filter system housings benefits from the standard length of 20” and customizable diameter, available in broad micron sizes from to 0.5 to 200.
1 Micron Water Filter Cartridge
Filson 1 micron water filter cartridge is an optimal choice to trap small particles and bacteria from water and effectively keep your family away from waterborne disease.
5 Micron Water Filter Cartridge
Filson 5 micron water filter cartridge is able to capture most bacteria, yeast or pollen with nominal micron rating.
10 Micron Water Filter Cartridge
Filson 10 micron water filter cartridges can be manufactured with string wound, melt blown, membrane. Which permits diverse flow rate ranges and different mechanical properties.
20 Micron Water Filter Cartridge
Filson 20 micron water filter cartridges are widely welcomed in almost all industries include chemical, pharmaceutical, oil, water and gas filtration.
100 Micron Water Filter Cartridge
Filson 100 micron water filter cartridge shows prominent particle rejecting efficiency up to 99.99% when filtering silica sand or other lager particulates.
Ion Exchange Filter Cartridge
Filson Ion exchange filter cartridge effectively softens water by ionically exchanging hard minerals with soft minerals such as sodium, hence avoid harmful hard water scale clogging your devices.
Water Filter Bags
Filson water filter bags feature simple structure for installation convenience, and can be applied as coarse, medium and fine filtration with micron rating range from 0.5 to 1000.
Filter Socks
You can obtain Filson filter socks from the widest range of media, such as polypropylene felt, nylon monofilament, polypropylene monofilament.

Why Filson Your Prime Choice for Water Filter Cartridges?

Custom service: 1. Mail us your target specifications to see the possibility; 2. Design according to your sent raw water sample.

Quality: Free samples are always available for your quality inspection; For each order, we will perform a bubble point test to ensure a good and stable filtration performance.

Packaging:  Heat shrink, carton, bubble wrap or wooden box packaging are all available according to your requirements.

After-sales support:  Filson sales manager and engineer team with over 18-year experience are at your service on 7/24.

CAD Drawing for Water Filter Cartridge

Filson: Your Specialist Water Filter Cartridge Manufacturer in China

Filson manufactures comprehensive water filter cartridge types from high flow water filter cartridges to filter socks, provides you with appropriate selections whether for industrial water treatment or drinking water production.

5micron 10micron membrane water filter cartridge

5micron 10micron Membrane Water Filter Cartridge

Among all Filson water filter cartridges, carbon block filter, high flow water filter cartridge, water filter bag and wire-wound cartridge are the most typical and popular items from the water plant to beverage industries.

Hi flow water filter cartridge production line and factory

Hi-flow Water Filter Cartridge Production Line and Factory

Filson carbon block filter tends to be utilized for drinking water treatment or pre-filtration of RO systems as high-quality activated carbon offers superior performance in reducing chlorine in spite of intercepting particles. Moreover, the taste and odor of the water can be improved by activated carbon to produce desirable drinking water as well.

Melt blown PP water filter cartridge size and dimensions

Melt Blown PP Water Filter Cartridge Size and Dimensions

Filson high flow water filter cartridges feature a diameter of 6″ larger than conventional cartridges to allow greater water flow passing through. Typically, a high-flow cartridge can deliver 56x the flow rate of a melt-blown water filter cartridge or 5x of a water filter bag of the same size.

Pleated water filter cartridge VS PP water filter cartridge

Pleated Water Filter Cartridge VS PP Water Filter Cartridge

When comparing string wound filter vs melt blown filter, you’ll find melt blown pp water filter cartridge a more rigid one-piece construction without inner core that rarely breakdown during the filtration process. Meanwhile, the string wound filter cartridge must be built with a PP or SS core, or it will not be shaped.

PP Water filter cartridge manufacturer in China

PP Water Filter Cartridge Manufacturer in China

Plus, string wound water filter cartridges attain higher precision of 0.5 microns which melt-blown one can only achieve 1 micron. Also, the string wound water filter cartridge shows a nominal filtration efficiency and larger dirt holding capacity, but melt blown water filter cartridge can trap 97% target impurities although with a smaller filtration area.

Stainless steel core string wound water filter cartridge

Stainless Steel Core String Wound Water Filter Cartridge

Filson has passed many certifications including CE and ISO 9001, and your visit to our factory is always welcomed. Furthermore, with an advanced production line and skilled staff, we strive to meet the strict production requirements of your production volume.

Water filter bag cartridge

Water Filter Bag Cartridge

Kindly send your requirements like ‘pp filter 5 microns’, ‘20 inch big blue water filter cartridge’ to with target dimensions. Also, Filson is always here to help you with ‘how to change water filter cartridge’ or any other questions!

Water filter cartridge Packing factory

Water Filter Cartridge Packing Factory



  • Selectable materials to build superior corrosion resistance
  • Nominal filtration rating contributes constant filtration effect
  • Variety of construction designs to meet different applications
  • Extended operating lifespan results in high economical efficiency
  • Large contamination holding capacity, less replacement frequency

Water Filter Cartridge Production Line

Water Filter Cartridge Production Line


  • Filtration accuracy: 0.2-1000
  • Types: string wound, melt-blown, membrane, carbon, ceramic…
  • Filter media materials: polypropylene(PP), polyester(PE),polyethersulfone(PES), polytetrafluoroethylene(PTFE), stainless steel(SS), sintered SS, carton, cotton.
  • Flow rate capacity: decided by the production processes and applied fluids
  • Sizes: customizable
  • Lengths: all decided by your demands
  • Max. operating temp: 260˚C-SS, 480˚C-sintered SS, 150˚C-cotton, 177˚C-nylon, 121˚C-PE, 82˚C-PP, 400˚C-fiberglass, 900°C-ceramic


  • Recycled water
  • Drinking water
  • Dairy products
  • Food and beverages
  • Fuel material extraction
  • Industrial water treatment
  • Pulp and paper production
  • Pharmaceutical and biotechnology
  • Chemical&petrochemical industries

Water filter cartridge sizes and kinds

Water Filter Cartridge Sizes and Kinds

People Also Ask

What is Water Filter Cartridge?

This is a piece of equipment that will retain contaminants by eliminating particles and debris out of water.

Water filter cartridge

 Water Filter Cartridge

What are The Types of Water Filter Cartridges?

Modern filter cartridges are effective and less complex than those in the past.

Some come with three to five chambers of filtration on one filter system.

For instance, in a multi-stage water filter cartridge, several filter cartridges are in each canister.

These water filters will eliminate a specific kind of contaminant from water.

This leads to pure drinking water.

These water filter cartridges can eliminate bacteria, particles, sediments, chemicals, etc.

Here are some water filter cartridges you can find in the market:

String Wound Water Filter Cartridge

This water filter cartridge is suitable to remove sediments, dirt, and rust from water.

String wound filter cartridges come in temperature ratings of up to 125 °F.

Also, they come with a polypropylene configuration thus offering the best resistance to chemicals.

Besides, they have no additives, binders, or lubricants that may seep into the water.

String wound water filter cartridge

 String Wound Filter Cartridge

Spun Water Filter Cartridge

To make this filter, you will melt polypropylene, blow and spin it into a cylinder-like design.

Spun filter cartridge removes large and small particles from water.

These sediments include sand, silt, dirt, rust, etc.

Spun water filter

Spun Water Filter

Ultraviolet Water Filter Cartridges

In this filter, water will not pass through.

It has an ultraviolet light bulb within the canister.

This bulb exposes bacteria and microorganisms to UV light thus destroying their DNA.

The bulb remains on the entire time.

One can measure the lifespan in hours of operating time and not the number of gallons you purify like in other filters.

UV filters offer the best way of destroying organisms like:

  1. Cysts
  2. Fungi
  3. Algae
  4. Dysentery
  5. Salmonella
  6. Viruses
  7. Bacteria

UV water filter system

UV Water Filter System

Carbon Water Filter Cartridge

Carbon filters contain charcoal which is a cheap component.

Charcoal assists in eliminating harmful toxins from water.

Also, carbon water filters will only eliminate toxins and leave essential minerals in the water.

They can remove chlorine, Volatile Organic Compounds [VOC], etc.

Besides, it will remove chemicals that cause foul tastes and odors.

However, they cannot eliminate sediments, minerals, salt, etc.

Activated carbon water filter

Activated Carbon Water Filter

Sediment Water Filter Cartridge

This equipment will eliminate sediments and dirt from water.

The sediment filter cartridge comes with a filter size of only one micron.

This makes it unable to remove microscopic organisms, chemicals, bacteria, etc.

It is suitable for removing sediments that have a size of over one micron.

In a multi-stage water filter cartridge, this would appear first in the system.

It removes sediments such as:

  1. Sand
  2. Rust
  3. Scale
  4. Dust
  5. Silt
  6. Dirt, etc.

Sediment water filter cartridge

 Sediment Water Filter Cartridge

High-Temperature Water Filter Cartridge

These cartridges will remove rust, sediments, and dirt from water.

The center of these cartridges has a stainless steel tube with a temperature rating of up to 180 °F.

Also, they have no additives, lubricants, or binders that may seep into the water.

Besides the polypropylene body makes it resistant to chemicals.

High temperature water filter cartridge

 High-Temperature Water Filter Cartridge

PP Water Filter Cartridge

This is a pure polypropylene fiber and has three pieces.

PP filter cartridge removes sediments and treats water and other solutions with a neutral pH value, chemicals, and solvents.

PP water filter cartridge

PP Water Filter Cartridge

Melt Blown Water Filter Cartridge

The melt-blown filter cartridges can eliminate rust, dirt, or sediments from water.

Also, the density layers come with their grade.

This means outer layers capture large particles are they are more porous.

On the other hand, the inner layers capture fine particles are they have a small micron value.

Melt blow water filter cartridge

Melt blow Water Filter Cartridge

Membrane Water Filter Cartridge

Membrane filter cartridge functions by removing sediments and particles from water.

Examples of processes that use this filter include reverse osmosis, nano-filtration, and ultra-filtration.

Membrane water filter cartridge

 Membrane Water Filter Cartridge

Stainless Steel Water Filter Cartridge

This is a general term that uses stainless steel as the main material for the body.

The stainless steel filter cartridges can remove particles and chemical impurities.

Also, it can come in micron ratings as 5, 10, and 50.

Stainless steel water filter cartridge

Stainless Steel Water Filter Cartridge

Pleated Water Filter Cartridge

Pleated filter cartridges will supply a large surface area and are durable.

They are washable and you can reuse them.

Also, they have varying sizes and micron ratings.

Pleated water filter cartridge

 Pleated Water Filter Cartridge

Alkaline Ionizer Water Filter Cartridge

Once you filter water, the basic minerals are also not available.

These water filters will add back minerals to the water.

It does this as water passes via the ion-active mineral rocks.

These rocks will boost the pH value hence balancing the water.

When you pass water via alkaline ionizers, it helps the water to contain more oxygen than basic water.

It also adds antioxidants and electrolytes that will benefit the body.

Alkaline ionizer water filter cartridge

Alkaline Ionizer Water Filter Cartridge

Ceramic Water Filter Cartridge

These filters are special because they have a positive charge on them.

This enables them to capture bacteria from water.

The bacteria will come into contact with the ceramic because of the positive charge.

Once this happens, the filter will dispense metal ions that have a positive charge.

This charge will eliminate the bacteria.

Also, they are very durable than other water filter cartridges.

This is because other contaminants do not fill it as water passes through.

These water filter cartridges will only eliminate bacteria and not other types of sediments and particles.

Ceramic water filter cartridge

 Ceramic Water Filter Cartridge

Reverse Osmosis Membrane Water Filter Cartridge

This filter cartridge has dense membranes hence can remove the smallest of particles.

Some of these filters can eliminate small microorganisms and viruses with a size of 1/10000th of a micron.

The extremely dense membranes can remove essentially everything from water.

Reverse Osmosis Membrane Water Filter Cartridge

Reverse Osmosis Membrane Water Filter Cartridge

It can eliminate:

  1. Odors
  2. Pesticides
  3. Bad taste
  4. Chemicals, etc.
What is a Micron Rating?

A micron is a unit of measurement which is similar to one one-thousand of a millimeter.

This is the size of the opening in a water filter cartridge that allows it to filter out particles or sediments.

Large micron size allows large sediments to pass through than a small micron size filter.

Any size below 40 microns is not visible to the naked human eye.

Here is a list of some micron sizes of substances:

  • Viruses: 0.01 to 1 microns.
  • Bacteria: 0.5 to 50 microns.
  • Pollen: 10 to 90 microns.
  • Asbestos: 0.08 to 0.8 microns.
  • Silica sand: 100 to 200 microns.
  • Yeast: 2 to 15 microns.
How Does Nominal and Absolute Micron Water Filter Cartridge Compare?

An absolute filter contains pore sizes that are exact to its micron rating.

Nominal filters contain pores that are an approximation to their micron rating.

For instance, a nominal 30-micron filter can allow a small fraction of debris than have a 30-micron size to pass through.

Absolute filters have an efficiency of over 95% thus they will not permit particles with their micron rating to pass through.

For an accurate filtration process, it is suitable to acquire an absolute filter and not nominal filters.

Nominal filters are the most common but you can find absolute filters.

How Does a Drop in Pressure Influence a Micron Water Filter Cartridge?

When using micron filters, a pressure drop dictates the time one should change the filter.

The pressure drop is the difference between the incoming pressure versus the outgoing pressure.

Water will experience resistance as it tries to pass through a water filter.

An increase in pressure drop means more debris is within the filter.

This means the water filter cartridge is at maximum capacity.

What are The Various Water Filter Cartridge Water Class?

One can classify the micron size as follows depending on their effectiveness:

  • Class 1: 0.5 to < 1 micron
  • Class 2: 1 to <5 microns
  • Class 3: 5 to <15 microns
  • Class 4: 15 to <30 microns
  • Class 5: 30 to <50 microns
  • Class 6: >50 microns
How Do Water Filter Cartridge Work?

Here is how a water filter cartridge works depending on the technique:

Mechanical Process

This process works by physically removing particles, dirt, or sediments via a barrier.

They can be in form of large meshes or ceramic filters.

Also, they come with micron ratings to highlight their effectiveness.

Some ratings you might find are:

  1. 5 microns eliminate particles that you can see without any equipment.
  2. 1 micron removes particles that you only can see without using a microscope.
  3. 5 microns will eliminate cysts.

Absorption Process

Carbon is the main material that filters out contaminants in this process.

This is because it has several pores that trap chemical impurities.

Granular activated carbon [GAC] minimized bad taste and odors through absorption.

Carbon blocks are expensive and can effectively remove small particles since it has a small micron rating.

One can use varying materials in the carbon filters like coconut shells and wood.


In this process, you will isolate substances chemically.

One can use food-grade polyphosphate to sequester calcium and magnesium that causes corrosion and limescale.

The process involves introducing polyphosphate in small amounts to minimize scaling and not eliminate it.

This means polyphosphate will not soften water but rather prevents it from scaling on other surfaces.

Ion Exchange

This process will soften hard water by replacing magnesium and calcium with sodium or hydrogen ions.

The exchange of ions will eliminate hard minerals, minimize limescale, and make it suitable in high-temperature applications.

Ion exchange happens by the use of ion-exchange resins.

These resins are in the form of small beads.

The resin will make use of sodium ions which you will recharge periodically to ensure it remains effective.

This method will increase the salt levels thus not suitable for drinking water.

To combat this, one can use hydrogen-based ion exchange resins.

Reverse Osmosis [RO]

In this process, you will remove inorganic sediments like calcium and magnesium.

It forces water under pressure via a semi-permeable membrane.

This allows contaminants to remain while water passes through.

Aside from being effective, one can combine it with mechanical and absorption methods to enhance its filtration.

This process will employ water pressure to force it through the membranes hence requiring no electricity.

These working techniques will all pass through these steps:

Preparation Stage

First, install the water filter cartridge in place after confirming that it works well.

Water Inflow

Allow water to flow within the water filter cartridge.

Filtration Process

As water passes, the filter will eliminate particles and microorganisms depending on its micron rating.

The longer the water moves within the filter, the more effective the filtration process.

Water Outflow

Water will pass within the housing to the exit as pure water free from contaminants.

What are Some Water Filter Cartridge Combinations?

Filtration methods come with their set of limitations.

This means one can combine individual water filter cartridges to get the best level of purification.

For example, one can employ mechanical, absorption, and ion-exchange combinations.

How Does Surface and Depth Water Filter Cartridge Compare?

Here is how these two compare:

Surface and depth filtration

Surface and Depth Filtration

Surface Water Filter Cartridge

A surface water filter cartridge will filter out contaminants at the surface of the filter.

It can have sheets of nylon, Teflon, polypropylene, etc.

These sheets have pleats to provide a large surface area for filtration.

The contaminants here will stick on the surface which will also assist with the filtration process.

One can wash and reuse this filter cartridge.

Depth Water Filter Cartridge

This can be a wound string, spun cartridges, or melt-blown cartridges.

They will remove large sediments on its surface and small sediments within the cartridge itself.

Besides, they are suitable when you are filtering water that has varying particle sizes.

Also, they eliminate and hold a lot of particles than the surface water filter cartridge without a loss in pressure.

Which Material is Used To Make Water Filter Cartridge?

Several materials make up this filter and it depends on the type of filter.

They include:

  • Carbon
  • UV light bulb
  • Stainless steel
  • Polypropylene
  • Ion exchange resins
What is Backwashing?

This is the process of forcing water in the wrong direction through the water filter.

The purpose of this technique is to remove clogs like dirt and sediments that block the filter.

It is common for places that treat large quantities of water for general purposes.

However, it is not suitable for drinking water.

What is Crossflow?

This is a process that allows reverse osmosis units to continually self-clean.

When water is passing via the membrane, some go downstream.

This will sweep off the contaminants from the membrane into the drain.

It is suitable for preventing contaminants from blocking the membranes.

What Types of Water Filters are Present in The Market?

They include:

Water Filter Pitcher

This is a low-cost, portable, and easy-to-use device.

It comes with activated carbon that cleans water.

They are suitable for filtering water for drinking and cooking since they have a small capacity.

Faucet Water Filter

This device installs on the faucet thus removing contaminants before it comes out.

Also, they will improve the taste and smell of tap water.

They are small, affordable, and easy to install.

The cons are that they may be incompatible with low faucets and that they slow the water flow.

Showerhead Water Filter

This device is on the showerhead.

They eliminate simple contaminants, are cheap, and are easy to install.

The drawback is that they offer a slow flow.

Countertop Water Filters

These devices are on the faucet, thus, filter water as you open the tap.

They are small, relatively affordable, and offer more filtration than faucet water filters.

However, they occupy the countertop area, meaning you need to have extra space for installation.

Under Sink Water Filters

These filters are large and will filter a lot of water in a short time.

They are usually under the sink, thus not visible, and can filter out various contaminants.

Besides, they are costly and take time to install.

Whole House Water Filters

This is suitable in areas that do not have tap water.

Installation happens at the water tank.

It connects to the main pipe and filters the water before it enters the various rooms on the premises.

Also, it will remove most contaminants and is cost-effective as you will not require other filters.

Besides, it is expensive and needs a professional to install.

Water Bottle Filters

They are small, affordable, and have a small capacity.

It filters the water as you drink it.

Straw Filters

These are affordable, light, portable, and easy to use filters.

They work as a normal straw only that they have a filter on one end to remove contaminants.

Water Softeners

These filters eliminate hard minerals by introducing sodium ions.

It makes water not leave limescale when it dries.

Besides, they are expensive to acquire and install.

Gravity Water Filters

This is a small, portable, emergency water filter.

They are effective and durable.

It works by hanging one reservoir and allowing gravitational force to pull water to another reservoir bag.

They are affordable and have a small capacity.

Portable Pump Water Filters

They are emergency water filters hence are durable and reliable.

A manual pump creates suction once you dip the hose into the source of water.

Clean water comes out the other side of the hose.

They are quick and have replaceable filters.

How Can You Select The Best Water Filter Cartridge?

Here are some considerations that may help:

Filtration Rate

Some filter cartridges can filter only a small amount of water per unit of time.

Others can filter large amounts of water daily.

Daily water consumption should not exceed the daily filtration rate.

Ensure the filter you choose will handle the amount of water available.

Quality of Water

Make sure the water filter cartridge not only removes contaminants but also improves water quality.

This includes foul smell, bad taste, and incorrect pH.

It should also preserve minerals in the water.


The amount you have will impact the water filter cartridge you can afford.

Quality Standards

Ensure you select a water filter cartridge that conforms to international standards.

Micron Rating

Make sure the water filter cartridge you select will meet your filtration needs.

A small micron rating will result in the purest water.

Also, take note that there are absolute and nominal micron ratings.


Some water filter cartridges require professionals to install.

This will cost you some extra money.


There are filter cartridges that require large spaces for installation.

Ensure you have enough space for installation, maintenance, and operation.

Maintenance Cost

Ensure the water filter cartridge is easy and affordable to repair and replace.

Operating Cost

Make sure after installation, the filter does not need extra accessories to function.


Ensure the water filter cartridge is the right size for your application and installation.

Which Water Filter Cartridge Will Remove Most Contaminants?

These filters come with some limitations.

This means they can remove some sediments and leave others.

The best way to ensure pure water is to combine them.

This ensures you remove large sediments and microorganisms.

Can Water Filter Cartridge Remove Parasites?

Several but not all filters will eliminate parasites.

Here are some indications on the label that show it can remove parasites:

  • Reverse osmosis
  • An absolute pore size of 1 micron or small.
  • Conformity to NSF/ANSI Standard 53 or NSF/ANSI Standard 58 for cyst removal or reduction.

Some indications on the label  that it will not remove parasites include:

  • A nominal pore size of 1 micron.
  • Carbon filter
  • EPA approval and registration
  • Water softener
  • Chlorinated
  • Ultraviolet light
  • Pentiodide resins
  • Activated carbon
  • Water purifier
How Long Will Water Filter Cartridge Last?

The durability of the filter depends on the level of contaminants you are dealing with.

For areas that have lots of contaminants, the filter will not last for that long.

On the other hand, in areas that have tap water, it may last for approximately 1 year.

How Do Distilled and Filtered Water Compare?

Distilled water will taste flat since it has no minerals and nutrients.

Filtered water is easy to acquire and needs minimal machinery.

Distilled water takes time and expensive equipment to achieve.

Filtered water retains oxygen from the source liquid.

Distilled water contains no fluoride thus can cause tooth decay and cause electrolyte imbalance since it lacks electrolytes.

Also, distilled water can negatively alter the pH of the body.

Why is it Important to Replace Water Filter Cartridges?

Stainless steel water filter cartridge

Stainless Steel Water Filter Cartridge

Having a reliable water filter cartridge is vital.
This is because it protects you and others from harmful contaminants.
When you do not replace them, they will not function properly.
The filters will clog thus making water not pass via the system.
This will affect the water pressure in the pipes.
Also, it will host contaminants like bacteria, mold, etc, which are harmful to your health.
This is because it will continue working efficiently by eliminating contaminants.

When Should You Replace Water Filter Cartridge?

There are times when you detect a foul smell or taste in water.

Besides, a slimy residue may accumulate on the filter and this is not easily noticeable.

A visual check-up, on clear containers, to see if there is any dirt can assist in making this decision.

Also, there could be a decrease in water pressure due to clogs in the filter.

If you notice any of these changes, it may be time to replace the water filter cartridge.

The manufacturer will also indicate the time that is suitable to do a replacement.

Also, the amount of water it filters also can indicate if it is time for a replacement.

Here is a useful guide on filter replacement you can learn from.

How Will You Know If Water Filter Cartridge is Working?

One can determine the effectiveness of the filter by testing the water before and after filtration.

This is known as a performance test, and you can do it in two ways:

Conducting Full Performance Test

In this method, you do two tests.

One before filtration and the other after filtration.

A full performance test will evaluate how effective the filter is by comparing the contaminants before and after filtration.

Conducting Post-Treatment Test

In this test, you will analyze the water after the filtration process.

It determines if the water is safe to drink after filtration.

Also, you will check the levels of contaminants in the drinking water.

Besides, it is cheap to conduct as you only need one test.

A full performance test is the most effective to determine the effectiveness of the filter.

Why is It Important to Certify Water Filter Cartridges?

Manufacturers of water filter cartridges may exaggerate their systems.

This may mean that the lifespan, filtration rate, and effectiveness do not match up.

Some manufacturers indicate that their filters offer a 99% reduction of lead or 95% elimination of chlorine.

These numbers may be incorrect.

The Water Quality Association [WQA] and NSF international assist with certifying these devices.

They will test these cartridges and their components.

After approval, they place their logos on these water filter cartridges to ascertain their quality.

What is NSF Certified Drinking Water Filter Cartridge?

NSF international will certify that a water filter cartridge will eliminate certain contaminants.

When NSF certifies a water filter cartridge, it means that:

  • It has a solid structure
  • The material construction is durable.
  • Also, it contains plastics and parts that will not leak into the water I.e. BPA.
  • Besides, the test results are 100% accurate.
  • The labels are 100% correct.

NSF certificates may approve some parts or the contaminants that it can minimize.

Some NSF certifications available include:

NSF Standard 53

This ensures the water filter cartridge will reduce specific toxic elements.

These contaminants are:

  1. Lead
  2. Giardia
  3. Methyl Tertiary Butyl Ether (MTBE)
  4. Cryptosporidium
  5. Volatile Organic Compounds (VOCs)

The safety standards include structural principles, reduction of contaminants, and safe materials.

NSF Standard P473: PFOA/PFOS

This certifies the reduction of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate.

NSF Standard  58

This also is a safety standard relating to lead and other contaminants.

It looks at water filter cartridges that use membranes such as reverse osmosis [RO].

NSF Standard P231

This will certify the removal of contaminants such as bacteria and viruses.

NSF Standard  42

This standard certifies the ability of a water filter cartridge to eliminate chlorine.

NSF/ANSI 42, 53, and 401 describe the aesthetic effects of these systems.

This standard excludes harmful by-products of chlorine

It indicates that these filters can remove:

  1. Chlorine
  2. Particulates
  3. Taste
  4. Odor
  5. Iron
  6. Zinc
  7. Manganese
  8. Total dissolved solids [TDS]

NSF Standard  401

This is a new standard that highlights the ability of these filters to minimize up to 15 various contaminants.

Also, it applies to carbon and reverses osmosis water filters.

It combats unnatural chemicals such as:

  1. BPA
  2. Pharmaceuticals
  3. Pesticides
  4. Herbicides
What Contaminants are Bad for You?

They include:


This component makes up 5% of the crust of the earth thus is available in water sources.

Symptoms of high iron levels in water are:

  1. It will darken beverages.
  2. Clothing material will discolor when you wash them.
  3. Water will have a metallic taste.
  4. There will be brown-red stains on dishes, laundry, etc.
  5. The water will turn reddish or brownish when you draw it from the taps.

The most common forms of iron in water are:

  1. Bacterial iron
  2. Colloidal iron
  3. Redwater iron
  4. Clearwater iron
  5. Organic iron


This element occurs with iron in the water.

They collect on the plumbing and show when you draw water.

It can cause clogs in pipes and fittings.

Manganese will oxidize more slowly than iron.

Symptoms of high levels of manganese are:

  1. Clogging of pipes.
  2. Blackwater.
  3. Black sediments.
  4. Blackish turbidity.

Calcium and Magnesium

These make water to be hard.

More levels of calcium and magnesium lead to a high degree of hardness.

  • Other contaminants

These include:

  1. Nitrates
  2. E-coli
  3. Sodium
  4. Tannins
What are The Quality Standards for Water Filter Cartridge?

These standards ensure the quality of water.

They include:

  • Water Quality Association [WQA]
  • NSF
  • Current Good Manufacturing Practice [cGMP]
  • Restriction of Hazardous Substance [RoHS]

I hope you found the information you’re looking for.

At Filson Filters, we design and manufacture a range of water filter cartridges.

Even the replacement filters for reputable brands, will find them right here.

Contact us today for all your water filter cartridge needs.

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