7 Best Whole House Well Water Filter Cartridges (*Update 2024)
Written by: Alexandra Uta // Expert Fact-Checking: Buddhini Dolapihilla, MBSS // Last Updated: Jan 31, 2024
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Top Pick: What’s the Best Whole House Water Filter Cartridge for Well Water?
The best whole house water filter cartridge for well water in 2024 is the Crystal Quest SMART Plus, because it targets all the different types of well water contaminants, has a long filter life of up to 18 months, and is made in USA, standard-sized, and relatively affordable to maintain.
Tired of sifting through countless whole house well water filter cartridges? We feel your pain! With so many options out there, finding the perfect cartridge for your well water can feel like searching for a needle in a haystack.
Good news: We’ve got your back. Our team of dedicated experts has done all the hard work for you and evaluated over 25 cartridges on the market. We’ve researched, reviewed, and tested them so you don’t have to. So, sit back, relax, and let us guide you to the ideal POE filter cartridge for your well water supply!
Contents
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No Time to Read? Check Our List of the Best Whole House Water Filter Cartridges for Well Water!
| Product | Details | |
|---|---|---|
 Best for Broad Contaminant Removal: Crystal Quest SMART Plus |
Overall Rating: 5.0/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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Price: $$ Filter Process: Blend of Filter Media Filter Life: 80,000-160,000 Gallons Flow Rate: 3-6 Gallons Per Minute Annual Replacement Cost: ~$105-240 Read Review: Click |
 Best for Sediment: PureT |
Overall Rating: 5.0/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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Price: $ Filter Process: 5-Micron Sediment Filter Life: 6-9 Months Flow Rate: 20-35 Gallons Per Minute Annual Replacement Cost: ~$40-70 Read Review: Click |
 Best for Iron: Home Master |
Overall Rating: 4.5/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
|
Price: $ Filter Process: Greensand Filter Life: ~16,000-160,000 Gallons Flow Rate: Not Specified Annual Replacement Cost: Varies Depending on Iron Levels Read Review: Click |
 Best for Organics + Bad Taste & Odor: Kind E200-R |
Overall Rating: 5.0/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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Price: $ Filter Process: Catalytic Carbon Block Filter Life: 12 Months Flow Rate: 15 Gallons Per Minute Annual Replacement Cost: ~$130 Read Review: Click |
 Best for Activated Carbon Filtration: Crystal Quest GAC |
Overall Rating: 4.5/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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Price: $ Filter Process: Granular Activated Carbon Filter Life: 12-18 Months Flow Rate: 3-6 Gallons Per Minute Annual Replacement Cost: ~$26-82 Read Review: Click |
 Best for Fluoride: US Water USWF-4520-BC |
Overall Rating: 4.0/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
|
Price: $$$ Filter Process: Aluminum Oxide Filter Life: 2,500 gal (1 ppm Fluoride) Flow Rate: 4 Gallons Per Minute Annual Replacement Cost: Varies Depending on Fluoride Levels Read Review: Click |
 Best for Lead: US Water Interceptor |
Overall Rating: 4.5/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
|
Price: $$ Filter Process: Submicron, PAC, Agion Silver Filter Life: 12 Months Flow Rate: Not Specified Annual Replacement Cost: ~$200 Read Review: Click |
Whole House Well Water Filter Cartridge Reviews
Our Top Picks
- Crystal Quest SMART Plus – Best for Broad-Based Contaminant Reduction
- PureT Whole House Filter Cartridge – Best for Sediments
- Home Master Whole House Filter Cartridge – Best for Iron
- Kind Water Systems E-200R – Best for Organics, Tastes, Odors
- Crystal Quest GAC – Best for Activated Carbon Filtration
- US Water USWF-4520-BC Fluoride Reduction Filter Cartridge – Best for Fluoride
- US Water Interceptor – Best for Lead
1. Best for Broad Contaminant Removal: Crystal Quest SMART Plus Whole House Water Filter Cartridge for Well Water
In our opinion, the best whole house water filter cartridge for well water in 2024 is the Crystal Quest SMART Plus. It uses 5 different filter media among other methods for targeting many different types of well water contaminants – heavy metals, sediments, pesticides, chlorine, organics, and much more.
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Crystal Quest SMART Plus Whole House Water Filter Cartridge |
|
| Price: | $$ |
| Filter Method: | Media Blend |
| Filter Capacity: | 80,000-160,000 gal |
| Water Flow: | 3-6 gpm |
| Annually: | ~$105-240 |
|
Overall Rating: 5.0/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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|
Other Specs
- Model: CQE-RC-04027, CQE-RC-04030
- Last Price: $159.00-241.00
- Filter Media: GAC, Catalytic Carbon, KDF, Ion Exchange Resin, Minerals Balls, Sediment Filter Pads
- Size: Standard-Sized (4.5×10 inches, 4.5×20 inches)
- Water Temperature: 40-145 °F
Key Features & Pros
- Made in the USA.
- The system uses a combination of different filter media:
- First, granular activated carbon plus catalytic carbon eliminate bad taste and odor. They remove chlorine, chloramine, disinfection byproducts, herbicides, pesticides, and more.
- Two forms of KDF media further remove chlorine, hydrogen sulfide (the rotten egg smell common to well water), and certain heavy metals like lead, iron, and chromium 6. They’ll also prevent microbial contaminants from growing inside the cartridge.
- Ion exchange resin replaces all kinds of ionically charged impurities.
- Ceramic and tourmaline balls have an antibacterial effect, assist with heavy metal elimination, and improve the water’s taste and aesthetics. They’ll also assist the water to maintain a more balanced pH level.
- Micron filter pads block sediments, sand, silt, and other large particles from clogging the other filter stages.
- Two different standard filter cartridge sizes are available.
- The 4-5/8” x 10” has an approximately 80,000-gallon capacity with a flow rate of 3 gallons per minute.
- The 4-5/8” x 20” filter cartridge has a 160,0000-gallon capacity and 6 gallons per minute flow rate.
- There are also two other sizes, but those are used for point-of-use systems.
- The cartridges are standard-sized, so they’ll fit in any system that takes standard-sized filter cartridges (big blue).
- Smart Plus cartridges will last approximately 12 to 18 months, depending on how much you use the system and the water quality.
- Annual replacement costs total approximately $105 to $240.
- Subscribing to Crystal Quest’s auto-ship will save you 5% on filter replacement costs.
- If you have a larger home with higher water demand, then the Ultra or Ultimate cartridge series will make more sense.
- The brand has excellent customer support and a very satisfied customer base.
Cons
- Highly contaminated water, especially water with high levels of sediment or iron may prematurely foul the filter cartridge and require additional pre-treatment.
- Flow rate is too low for larger homes, and will realistically only work in homes with a single bathroom.
- The ultra and ultimate versions are on the expensive side.
Our Rating
- Filtration Performance: 5.0/5.0
- Filter Capacity: 5.0/5.0
- Price: 4.0/5.0
- Annual Cost: 4.0/5.0
- Overall: 5.0/5.0
Best for
The Crystal Quest SMART Plus whole house filter cartridges are best for broad-based well water filtration.
2. Best for Sediments: PureT 5-Micron Whole House Sediment Filter Cartridge
If you have problems with sediment in your well water, which is pretty common, we recommend the PureT 5-Micron Whole House Sediment Filter Cartridge.
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PureT 5-Micron Whole House Sediment Filter Cartridge |
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| Price: | $ |
| Filter Method: | Sediment (5 Microns) |
| Filter Capacity: | 6-9 Months |
| Water Flow: | 20-35 gpm |
| Annually: | ~$40-70 |
|
Overall Rating: 5.0/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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|
Other Specs
- Model: PureT 5-Micron
- Last Price: $40.18-$67.98
- Filter Media: 50-to-5-Micron Polypropylene
- Size: Standard-Sized (4.5×10 inches, 4.5×20 inches)
- NSF Certification: 42
Key Features & Pros
- Polypropylene media will trap sand, silt, sediment, or other particles down to just 5 microns in size.
- 4 different layers inside the filter cartridge allow for different gradient depth-filtration to maximize dirt-holding capacity.
- Starts at 50 microns.
- Comes with NSF standard/certification 42 for structural integrity.
- 2 different sizes to pick from:
- 4.5” x 20”.
- 4.5” x 10”.
- Standard sizing means that both filter cartridges can be used with any whole house system that accepts standard-sized filter cartridges.
- Very high flow rates of 20 to 35 gallons per minute are appropriate for large homes with multiple bathrooms.
- Each cartridge will last for between 6 and 9 months depending on your usage and water quality.
- Annual replacement costs are just $40.
- Subscribing for autoship will save you 5%.
- Springwell is a highly regarded brand with excellent customer service, solid warranties, and knowledgeable support.
Cons
- Highly contaminated water with high levels of coarse sediment may be too much for the filter to handle. Pre-treatment may be required.
Our Rating
- Filtration Performance: 5.0/5.0
- Filter Capacity: 5.0/5.0
- Price: 5.0/5.0
- Annual Cost: 5.0/5.0
- Overall: 5.0/5.0
Best for
The PureT 5-micron filter cartridge is best for whole house well water sediment filtration.
3. Best for Iron: Home Master Iron Reducing Filter
The number one whole house well water filter cartridge we like to recommend for removing iron is sold by Home Master. It’s good for both clear and red-water iron up to 3 parts per million.
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Home Master Iron Reducing Filter |
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| Price: | $ |
| Filter Method: | Greensand |
| Filter Capacity: | ~16,000-160,000 gal |
| Water Flow: | Not Specified |
| Annually: | Varies |
|
Overall Rating: 4.5/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
|
|
Other Specs
- Model: Cfrffe-20BB
- Last Price: $125.00
- Size: Standard-Sized (4.5×20 inches)
- Water Pressure: 20-100 °F
- Water Temperature: 40-100 °F
- Water pH: >7.0
Key Features & Pros
- Whole house well filter cartridge designed specifically for reducing iron.
- Cartridge uses greensand media to remove iron as well as manganese and hydrogen sulfide – all common contaminants in well water.
- The cartridge reduces up to 3 parts per million of ferrous and ferric iron.
- Ferrous iron and manganese are both oxidized to trap them inside the filter bed.
- Hydrogen sulfide is reduced to an inert sulfur precipitate.
- Manganese and hydrogen sulfide will both reduce the cartridge’s service life by 2 to 6 times the rate of iron.
- Filtration will eliminate brown and orange discoloration on tubs, sinks, fixtures, and other surfaces in contact with your water.
- The filter has a capacity of 26,000 gallons at an iron level of 3 ppm. If your iron concentration is lower than that, your filter cartridge will last for longer (160,000 gallons at 0.5 ppm iron) – and the opposite for higher concentrations of iron (16,000 gallons at 5 ppm iron).
Cons
- Highly contaminated water with high levels of sediment or the abovementioned manganese and hydrogen sulfide will prematurely age the filter and may require additional pre-filtration.
- Not ideal for very high levels of iron as replacement costs are prohibitively expensive.
- No flow rates are specified by the manufacturer.
Our Rating
- Filtration Performance: 5.0/5.0
- Filter Capacity: 4.5/5.0
- Price: 4.5/5.0
- Annual Cost: 4.0/5.0
- Overall: 4.5/5.0
Best for
The Home Master is ideal for whole house well water iron removal.
4. Best for Organic Chemicals and Improving Water Taste & Odor: Kind Water Systems E-200R
If you want your well water aesthetics to improve, or you are dealing with excess chlorine (due to shock chlorination), or you found pesticides, disinfection byproducts, or other organic chemicals in your water, the E-200R by Kind Water Systems is the way to go!
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Kind Water Systems E-200R Whole House Water Filter Cartridge |
|
| Price: | $ |
| Filter Method: | Catalytic Carbon (Block) |
| Filter Capacity: | 1 Year |
| Water Flow: | 15 gpm |
| Annually: | ~$130 |
|
Overall Rating: 5.0/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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|
Other Specs
- Model: E-200R
- Last Price: $131.15
- Size: Standard-Sized (4.5×20 inches)
Key Features & Pros
- The catalytic carbon block filter cartridge will remove foul taste and odor, as well as chlorine and chloramine, certain heavy metals, and sulfur (the rotten egg odor common to well water).
- Will also remove most organic chemicals and pesticides/herbicides.
- The flow rate is an impressive 15 gallons per minute – making it ideal for larger homes with up to 6 bathrooms.
- Standard-size filter means the cartridge is compatible with any standard-sized filter system.
- Easy to replace filter cartridges.
- One cartridge will last for approximately 12 months according to the manufacturer. This comes to just $130 annually.
- Subscribing to the manufacturer’s auto-ship will save you 15%.
- Cartridges come with O-rings and lubricant.
- Satisfaction is guaranteed or your money back.
Cons
- Like the systems reviewed above, in situations with bad contamination, this whole house filter cartridge may clog prematurely and additional pre-filtration may be necessary.
Our Rating
- Filtration Performance: 5.0/5.0
- Filter Capacity: 5.0/5.0
- Price: 4.5/5.0
- Annual Cost: 4.5/5.0
- Overall: 5.0/5.0
Best for
The Kind E-200R is best for removing organic contaminants and foul odor/taste from well water.
5. Best for Activated Carbon Filtration: Crystal Quest GAC Filter Cartridge
If you find the Kind E-200R from above too advanced and you are looking for a more basic carbon whole house water filter cartridge, we recommend the Crystal Quest CQE-RC-04106 which uses simple granular activated carbon first and foremost.
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Crystal Quest GAC Water Filter Cartridge |
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| Price: | $ |
| Filter Method: | Granular Activated Carbon |
| Filter Capacity: | 1-1.5 Years |
| Water Flow: | 3-6 gpm |
| Annually: | ~$26-82 |
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Overall Rating: 4.5/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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|
Other Specs
- Model: CQE-RC-04104, CQE-RC-04106
- Last Price: $39.95-82.00
- Filter Media: GAC, Catalytic Carbon, KDF
- Size: Standard-Sized (4.5×10 inches, 4.5×20 inches)
- Water Temperature: 40-145 °F
Key Features & Pros
- Made in the USA.
- Coconut shell granular activated carbon is the main ingredient. Catalytic carbon and KDF filter media is added for support.
- Combined, these filter media will reduce chlorine, chloramine, VOCs, pesticides, herbicides, PCBs, heavy metals, hydrogen sulfide, and some iron, plus inhibit the growth of microbial contaminants within the system.
- Flow rate of 3 to 6 gallons per minute, depending on the size selected.
- 2 sizes are available for whole house systems:
- Standard 4.5” x 20” big blue.
- Standard 4.5” x 10”.
- Filter lifespan is 12 to 18 months of use.
- Annual filter cartridge replacement cost is approximately $26 to $82 per year, depending on the size selected.
- Subscribing to autoship will save you 5%.
Cons
- With highly contaminated water, water with high levels of sediment or iron etc., consider pre-treatment.
Our Rating
- Filtration Performance: 4.5/5.0
- Filter Capacity: 5.0/5.0
- Price: 5.0/5.0
- Annual Cost: 5.0/5.0
- Overall: 4.5/5.0
Best for
The Crystal Quest GAC Filter Cartridge is best for basic activated carbon filtration at a budget price.
6. Best for Fluoride: US Water USWF-4520-BC
Are you struggling with elevated fluoride levels? This is the best whole house well water filter cartridge for the job!
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US Water Fluoride Reduction Filter Cartridge |
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| Price: | $$$ |
| Filter Method: | Aluminum Oxide |
| Filter Capacity: | 2,500 gal (1 ppm Fluoride) |
| Water Flow: | 4 gpm |
| Annually: | Varies |
|
Overall Rating: 4.0/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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Other Specs
- Model: USWF-4520-BC
- Last Price: $172.95
- Size: Standard-Sized (4.5×20 inches)
- NSF Testing: 42, 61, 372
Key Features & Pros
- The USWF-4520-BC by US Water Systems is Made in USA.
- Cartridge uses an aluminum oxide resin to remove fluoride through a reaction with the filter media.
- The filter media also targets arsenic and lead.
- Adds nothing to the water, unlike activated alumina filters.
- Impurities are removed through both adsorption and the chemical reaction.
- Tested to NSF/ANSI standards 42, 61, and 372.
- The filter lifespan varies depending on how much fluoride your water has. At 1 part per million, the filter will treat approximately 2,500 gallons. Higher concentrations will naturally reduce cartridge lifespan.
- Works over a wider pH range.
- Cartridges are the standard-sized big blue (4-1/2” x 20”) and can be used in any system accepting standard-sized whole house water filter cartridges.
Cons
- The flow rate of 4 gallons is on the low end.
- Relatively expensive considering the filter lifespan is very short.
- Highly contaminated water with high levels of sediment, iron, or other contaminants can prematurely clog the filter – requiring additional pre-treatment.
Our Rating
- Filtration Performance: 4.5/5.0
- Filter Capacity: 3.0/5.0
- Price: 4.0/5.0
- Annual Cost: 3.0/5.0
- Overall: 4.0/5.0
Best for
The US Water USWF-4520-BC filter is best for removing fluoride from well water systems.
7. Best for Lead: US Water Interceptor Whole Home Well Filter Cartridge
Lead is highly dangerous when in well water supplies. Not only is it extremely harmful to drink, it can also affect your health when being absorbed through your skin and other means.
What to do? Use the US Water Interceptor Whole Home Well Filter Cartridge!
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US Water Interceptor Whole Home Well Filter Cartridge |
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| Price: | $$ |
| Filter Method: | Submicron, PAC, Agion Silver |
| Filter Capacity: | 1 Year |
| Water Flow: | Not Specified |
| Annually: | ~$200 |
|
Overall Rating: 4.5/5.0 ⓘRatings based on contaminant removal, service life, water flow rates, costs, our testing, third-party opinions, product support, warranty, and other factors.
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Other Specs
- Model: 361-USP-IN-PAC-4520-D
- Last Price: $201.95
- Size: Standard-Sized (4.5×20 inches)
- Water pH: 5-9.5
- NSF Testing: 42, 61
Key Features & Pros
- Filter cartridge combines four filter methods to remove a wide variety of contaminants including both forms of lead (particular and soluble).
- Mechanical filtration via the 5-micron outer filter removes particular lead along with other particulates like sediment.
- The sub-micron filter removes soluble lead, silica, chromium 6, and over 99.99% of bacteria and cysts.
- Powder-activated carbon removes chlorine, foul tastes, and odors, as well as certain chemicals and pesticides.
- Lastly, Agion silver infused in the powder-activated carbon will help to reduce the growth of bacteria, mold, and other harmful microorganisms.
- The system conforms with both NSF/ANSI standards 42 and 61.
- Will not cause a significant pressure drop.
- Standard-sized filter cartridge means the cartridge can be used in any standard-sized system.
- The average filter lifespan is 12 months, depending on your water consumption and the level of contaminants contained in your water.
- Subscribing to auto-ship will save you 10%.
Cons
- Once again, if your water is highly contaminated with sediment, iron, or other contaminants, the filter may not work as intended and will require additional pre-filtration.
Our Rating
- Filtration Performance: 4.5/5.0
- Filter Capacity: 5.0/5.0
- Price: 4.0/5.0
- Annual Cost: 4.0/5.0
- Overall: 4.5/5.0
Best for
The US Water Interceptor is the best choice when you’re looking for a whole house filter for eliminating lead from well water.
More Reviews:
- Best Whole House Water Filters for Well Water in the Market
- Best Whole House Sediment Filters for Well Water
- These Are the Best Whole House Water Filter Cartridges!
- All the Best Whole House Water Filters
- Find the Best 2-Stage and the Best 3-Stage Whole House Water Filters Here!
- Best Spin-Down Sediment Filters
- Best Sediment Water Filter Cartridges
- List with All Whole House Water Filters Featured on BOS
Comparison List
(Mobile Hint: Swipe to Scroll)
| Model | Price | Filter Method | Filter Capacity | Water Flow | Annually | Additional Info |
|---|---|---|---|---|---|---|
| Crystal Quest SMART Plus Whole House Water Filter Cartridge | $$ | Media Blend | 80,000-160,000 gal | 3-6 gpm | ~$105-240 | |
| PureT 5-Micron Whole House Sediment Filter Cartridge | $ | Sediment (5 Microns) | 6-9 Months | 20-35 gpm | ~$40-70 | |
| Home Master Iron Reducing Filter | $ | Greensand | ~16,000-160,000 gal | Not Specified | Varies | |
| Kind Water Systems E-200R Whole House Water Filter Cartridge | $ | Catalytic Carbon (Block) | 1 Year | 15 gpm | ~$130 | |
| Crystal Quest GAC Water Filter Cartridge | $ | Granular Activated Carbon | 1-1.5 Years | 3-6 gpm | ~$26-82 | |
| US Water Fluoride Reduction Filter Cartridge | $$$ | Aluminum Oxide | 2,500 gal (1 ppm Fluoride) | 4 gpm | Varies | |
| US Water Interceptor Whole Home Well Filter Cartridge | $$ | Submicron, PAC, Agion Silver | 1 Year | Not Specified | ~$200 |
Buying Guide: How to Choose the Whole House Well Water Filter Cartridge That’s Best for You
The following are key features worth considering when shopping for a whole house water filter cartridge for well water. They will help you choose the right on for your needs and budget.
Test Your Well Water Quality
If your water is supplied by a well, then the first thing you’ll want to do is test your water to determine which contaminants you’re dealing with. There are two ways to do this when it comes to well water – by using a home test kit or by having your water professionally tested.
The home testing option is cheaper and will give you near-instant results, however, it’s less accurate and won’t give you the precise quantities of contaminants in your water, only a rough estimate.
Professional testing, on the other hand, requires you to send a well water sample to a lab for analysis. This takes longer to receive your results and is more expensive, but the results are highly accurate which will give you a better basis to make your purchase.
Types of Whole House Water Filter Cartridges for Well Water
Sediment Filters
Sediment filters are used to trap and remove small and large particles from your well water. They are only used for removing suspended particles and aren’t effective against other contaminant types like dissolved metals or chemicals such as pesticides.
Iron Filters
Iron filters, as you might expect, target and remove iron from your water supply. Iron is a common contaminant in well water systems, as rain and snow melt etc. collect iron from iron-bearing rocks and soil.
Two forms of iron must be removed during filtration for a filter to be effective – ferrous and ferric iron. Typically, filters will convert ferrous iron into ferric iron (rust) and then trap it.
Carbon Filters
Carbon filters are some of the most common general water filter types, as they are cheap, effective and work well to improve water taste and odor.
Carbon filters can be further divided into regular activated carbon filters and catalytic carbon filters.
Regular activated carbon filters primarily remove chlorine, foul tastes and odors, and certain pesticides and disinfection byproducts. This makes them limited in their effectiveness when it comes to well water filtration.
Catalytic carbon filters are significantly more effective, and in addition to the above contaminants, will also remove chloramine, hydrogen sulfide (a common contaminant in well water), and certain heavy metals.
Another difference to be aware of concerning carbon filters is the difference between carbon block and granular carbon. Carbon blocks are considerably more effective at removing contaminants, however, due to their solid design, they slow down the water flow more than granular carbon filters. For whole house filters, granular carbon may be necessary to allow for an adequate flow rate.
Ion Exchange Filters
Ion exchange filters are specialized filters designed to reduce specific problematic impurities like inorganic substances, arsenic, sulfate, and other ionically-charged pollutants.
Fluoride Filters
There are several ways to reduce fluoride from well water effectively. Ion exchange filters mentioned above can accomplish this, as well as reverse osmosis systems and activated alumina.
Activated alumina features activated alumina granules that absorb fluoride in addition to arsenic, uranium, and thallium.
KDF Filters
KDF media filters are some of the most popular filter types when it comes to well water filtration. They’ll remove lead, hydrogen sulfide, chromium, and more. They also have the advantage of preventing the growth of harmful bacteria inside a water filter system.
Micron Rating
Micron ratings refer to the size of particles that a filter will remove. A micron is equal to one-thousandth of a millimeter, so the smaller the micron rating, the smaller the particles the filter can remove.
A common micron rating for sediment filters is 5 microns, which means any particle 5 microns and up will be retained by the filter.
Keep in mind that a lower micron rating also typically means a lower flow rate through the filter. So, there’s a tradeoff when it comes to micron ratings and flow rate.
NSF/ANSI Certification
NSF/ANSI certification refers to the independent third-party organization that tests and certifies water filters and other home appliances. An NSF/ANSI certification is the best way to ensure the claims made by the manufacturer are backed up by real-world verification.
NSF/ANSI certification is somewhat rare when it comes to whole house systems, however, some of the above feature NSF/ANSI standard 42. This standard is for the reduction of ‘aesthetic effects’ in water and or structural integrity.
Flow Rates
Flow rates refer to the maximum capacity a well water system or cartridge can filter at one time. This rate is measured in gallons per minute, and manufacturers will also sometimes include the number of bathrooms the system can accommodate as well.
In essence, the flow rate is an important figure as it will determine the size home a filter cartridge can operate in. For larger homes with 4 or more bathrooms, you’ll want to go with 15 or more gpm, smaller homes can get away with 10 gpm, and homes/apartments with a single bathroom can use a system with 5 or so gpm.
Cartridge Size and Installation
Filter cartridge size varies significantly but several standard-sized cartridges can be used in any system that accepts standard cartridges.
The common standard sizes for whole house filters are 4.5” x 20” and 4.5” x 10”. There are also two additional standard-sized cartridges – 2.5” x 20” and 2.5” x 10”, but these are typically used for under sink, countertop, or inline water filters.
There are also proprietary filter sizes that are only compatible with a specific filter system. These cartridges will only work with that filter system and as such can’t be used with standard-sized filter systems.
Filter Life and Maintenance
Filter life refers to the length that a well filter cartridge will last before it requires replacement. Typically, cartridges will last anywhere from 2 months to a year before needing replacement. The life expectancy will typically be given in both time and the quantity of gallons of purified water.
The exact replacement schedule for any filter cartridge will vary based on how much you use the filter as well as the water quality.
Most cartridge-based well water filtration systems don’t require significant maintenance other than remembering to replace the cartridges on time.
Product Warranties
While water filter cartridges aren’t typically expensive, a warranty that reflects the intended lifespan of the cartridge is good for peace of mind.
Cost
Filter cartridges for the whole house are available in a wide range of price points – depending on what you’re looking for. Cartridges offering basic sediment filtration tend to be the least expensive, followed by carbon filter cartridges, with specialized cartridges being the most expensive.
More on Whole House Water Filter Cartridges for Well Water
Further Reading:
What Is a Whole House Water Filter Cartridge for Well Water?
A whole house water filter cartridge for well water is any cartridge used in a whole house filtration system specifically targeting well water.
Well water often contains specific contaminants like hydrogen sulfide, iron, and manganese, or high levels of sediment, and as such well water filter cartridges will typically be targeted toward removing these.
Why Do I Need to Filter My Well Water?
Well water, unlike municipal water, does not undergo any treatment before it reaches your tap. That means any contaminants contained within it go straight into your home’s water supply. This can include things like harmful microbes, heavy metals, iron, or hydrogen sulfide (the cause of the sulfury rotten egg smell found in well water).
Filtering your well water will eliminate contaminants that could damage your plumbing or appliances, and give you the peace of mind of knowing your well water is completely safe and healthy to drink.
Common Well Water Contaminants
The two most common forms of well water contamination are microbial contaminants and environmental contaminants.
- Microbial contaminants include things like bacteria, viruses, cysts, and fungi. These can come from groundwater contact with animal waste or septic systems among other sources. They then work their way into well systems where they can cause diarrhea, upset stomach, and in some cases more serious illness. This is more of a concern for well water than municipal water, as municipal water undergoes treatment with disinfection agents that kill off any microbial contaminants.
- The other major concern for well water is environmental contaminants. Heavy metals like iron, manganese, lead, and chromium 6 can work their way into your well water from natural or manmade deposits, or even through your home’s plumbing. Hydrogen sulfide can also be naturally-occurring or manmade. The same goes for fluoride. Organic chemicals usually stem from human activity, while sediments are found in pretty much all well water supplies by nature. And so on.
The Different Types of Well Water Filter Cartridges and How They Work
Let’s take a quick look at the different kinds of well water filter cartridges and how they operate.
Mixed Media Bed Filter Cartridges
Mixed media bed filter cartridges combine several types of filter media to achieve broad-based filtration effectiveness.
If you take a look at the top-rated Crystal Quest SMART Plus filter review above, you’ll notice it combines an impressive 7 filter media types to target a broad array of contaminants. The filter uses a combination of granular activated carbon, catalytic carbon, KDF media, ion exchange, and mineral balls. As a result, the filter will reduce or eliminate chlorine, chloramine, sulfur, heavy metals, salts, minerals, and more, as well as balance the water’s pH and improve its taste.
Whole House Carbon Water Filter Cartridges
We mentioned carbon filters briefly above, and while they’re more commonly used in municipal water filtration, they also have their place in well water filter systems. These filters are useful for removing chlorine, pesticides, industrial solvents, and disinfection byproducts, as well as improving the taste and smell of water.
As far as well water filtration is concerned, catalytic carbon filter cartridges are generally preferred, as they’ll also remove hydrogen sulfide and certain metals.
Sediment Filters
Sediment filters are designed to remove sand, silt, dirt, rust, and other large particles from your water supply. These are useful for both extending the life of your home’s pipes, fixtures, and water-consuming appliances like washing machines and dishwashers, as well as preventing clogging in any later filter stages.
Sediment filters will nearly always feature a micron rating indicating the size particle it will eliminate, with 5 microns being the most common.
Specialized Well Filter Cartridges
In addition to the common cartridges listed above, there are also specialized filter cartridges designed to target and eliminate specific contaminants like fluoride. These cartridges vary in their design and function but as they are targeted at a single contaminant, they tend to be highly effective at removing said contaminant.
10 and 20-Inch Standard-Sized Cartridges
The two common standard-sized whole house filter cartridges are 4.5” x 20” (also called big blue), and 4.5” x 10”. Any cartridge that’s one of these sizes will fit in any system that accepts standard-sized cartridges.
Benefits and Drawbacks of Using Filter Cartridges on Well Water
Let’s briefly discuss the benefits and drawbacks of using a cartridge-based whole house filter on well water.
Benefits
Improved Taste and Odor
One of the biggest complaints people have with well water is its poor taste and odor. Tank or cartridge-based, a whole house water filter can improve the situation immediately.
High-Quality Water
If your water is sourced from a well, then filtering it should be a priority. Unlike municipal water which undergoes thorough treatment and disinfection, well water undergoes no treatment at all.
Filtering your well water will not only improve its taste and odor but will also ensure you have healthy, high-quality water in your entire home.
Ease of Use
Whole house systems are perhaps the best systems when it comes to ease of use. All that’s required is opening up a faucet, and clean filtered water comes out.
Drawbacks
Cost
Filter cartridge systems require regular replacements, which can add up to significant costs over time. Unlike tank-based systems, which require a larger up-front investment, cartridge systems cost less up front but costs increase over time as cartridge replacements are purchased.
Frequent Cartridge Replacements
This ties in with the previous issue, which is that cartridge replacements must be installed on schedule for the system to continue operating effectively. Cartridges are not typically complex to replace, but it is a task that must be done nonetheless.
How to Replace a Whole House Water Filter Cartridge for Well Water
Replacing a whole house well water filtration cartridge is generally not complex, and the steps are similar although not identical for most systems:
- First, turn off the main water supply to your home.
- Then, open a faucet downstream of the system to drain any water remaining in the plumbing and system.
- When the line is fully drained, use a filter wrench to loosen the filter housing from the system.
- Remove and discard the old filter cartridge. Then, clean out the inside of the filter housing using some dish soap and water or non-scented bleach. Rinse and dry.
- Then, slide the new filter cartridge into the housing. Check the condition of the O-rings in the housing. They may need to be lubricated or replaced if damaged.
- Screw the filter housing back on. Carefully tighten with a filter wrench.
- Turn the water supply back on.
- Let the filter run and examine the system for leaks.
- Depending on the type of cartridge, you may need to flush the system for some time to remove any particles or prime the filter media.
Frequently Asked Questions (FAQ)
- How do I choose a whole house well water filter cartridge?
Ideally, you first test the quality of your well water and make a decision based on that. Also, it’s better to go with standard-sized filters. - What micron filter cartridge is best for well water?
It depends on the size and concentration of sediments in your well. For severely contaminated water, we recommend step-down filtration (use several sediment filter stages starting with larger micron ratings). - How often should you change a whole house water filter with well water?
This depends on your water quality, usage, and the filter cartridge in questions. Anywhere from 1-2 months to more than 1 year is possible. - Should you use a carbon filter on well water?
Yes, you can definitely use a carbon filter on well water if you’re trying to get rid of bad taste and odor as well as organic chemicals. - What does a whole house well water filter cartridge remove?
A well water filter cartridge can use all kinds of filter media, so it depends. Activated Carbon is great for removing organics. Greensand is effective against iron, manganese, and sulfur. Activated alumina works against fluoride. And so on.
How We Chose and Tested the Best Whole House Well Water Filter Cartridges (Why Trust Us)
When it comes to whole house water filter cartridges for well water, we don’t mess around. Here’s how we do things:
- First, we have a list of evaluation criteria (13 attributes). The list was developed over the years of us being in the water treatment industry.
- Next, we created a list of 25+ cartridges, both old favorites and exciting newcomers.
- Then, we dug deep into the nitty-gritty details, examining manuals, descriptions, and third-party testing to narrow down our options.
- But we didn’t stop there. We grilled the brands with interviews to see how they held up under pressure.
- Of course, we also scoured the internet for authentic user reviews and ratings. But we didn’t just rely on other people’s opinions, though. We got hands-on and installed some of the top contenders ourselves, giving them a thorough test run for at least 2 weeks – taking note of how the filtered water tasted and smelled, potential drops in water pressure, etc.
- And to make sure we had all the facts, we even sent filtered water samples to a lab for rigorous testing – think contaminant reduction rates.
- All this research and testing led us to the final selection of exceptional well filter cartridges that made the cut. So you can trust that our information is independent, unbiased, and backed by our dedication to getting it right (The role of Buddhini Dolapihilla, MBSS in evaluating claims to reduce contamination was of utmost importance, involving the verification of third-party certifications online and a thorough analysis of lab data).
About Our Ratings
Our evaluation of whole house well filter cartridges is mostly based on: Contaminant reduction (25%), filter life (20%), flow rates (20%), yearly cost (15%), 3rd-party ratings and hands-on testing (10%), customer support and warranty (10%).
We’ve rated each cartridge on a score of 1 to 5, with 5 being the highest rating.
Questions? Ask away!
About the Author Alexandra Uta
Information provided on BOS is for educational purposes only. The products and services we review may not be right for your individual circumstances.
We adhere to strict editorial guidelines. Rest assured, the opinions expressed have not been provided, reviewed, or otherwise endorsed by our partners – they are unbiased, independent, and the author’s alone. Our licensed experts fact-check all content for accuracy. It is accurate as of the date posted and to the best of our knowledge.