Whole House Water Filter for Well Water

You need water not only to hydrate but to cook and bathe with too, so your contact with the liquid on a daily basis in inevitable. However, this does not mean that you have to settle for any quality water as it is important for the water you use and drink to be free of impurities as much as possible. Otherwise, an array of issues emerge, ranging from infections which are hard to get rid of to serious health diseases like cancer, depending on what type of contaminants you are dealing with. When you procure the water you use and drink from the well, the situation is even worse as the water is not passed through the purification system put in place by the municipality in your area. Thus, you have to completely take matters into your own hands to ensure you will not use water which might ultimately harm you, a situation that can be fixed with the right filtration system in check.

Top 3 Whole House Water Filters for Well Water Compared

  Aquasana Rhino 500,000 Gallon Well Water Filter System& Salt Free Softener Image  Pelican PSE1800-PUV-7 Whole House Filter & Salt Free Softener with UV Image  Crystal Quest Eagle 4000 Whole House Water Filter & Water Softener Image
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Manufacturer Aquasana Pelican Water Crystal Quest
Dimensions 20”x 48” x 10” 27”x 50”x 18” 10” x54” /12” x52”
Weight 80 lbs 32 lbs /
Color Blue Metallic Metallic
Filtration Capacity 500,000 gal. 600,000 gal. 750,000 gal./1,000,000 gal.
Chlorine Reduction 97% 100% 99.99%
Flow Rate 7 gal./min. 10 gal./min. 9-13 gal./min.
Maximum Operating Pressure 100 PSI 80 PSI 90 PSI
Maximum Operating Temperature 90 F 120 F 90 F
Unit Lifespan 5 years or 500,000 gallons 5 years or 600,000 gallons 5 to 7 years for 750,000 gallons and 7 to 10 years for 1,000,000 gallons
Filter Cartridges Lifespan Pre-Filter = 3 months, Post Filter = 12 months Pre-filter=6-9 months N/A
Filtration Specifications
Filtration Stages 6 6 15
Number of Filters Included 2 1 1
Sediment Pre-filter
Post Filter
Salt Free Water Softener
UV Sterilizing Light
Contaminants Removed Multiple Multiple Multiple
Softener Technology NAC Salt Technology Nature Soft System 3-Stage Water Softener
Sterilizing Technology UV Sterilight Filtration Pelican UV Max UltraViolet
Type of Media Copper-Zinc & Mineral Stone Pelican Media Guard – Copper and Zinc Oxidation Media (KDF-55) Eagle Redox Alloy
Other Features Smart Design Energy Efficient Manual or Automatic Backwash
  Optional Pro Grade Install Kit   1.5/2.0 cubic feet resin
Warranty 5 years Lifetime 7 years
Money-Back Warranty 90-day money back guarantee 90-day money back guarantee /
NSF Certified

Well water is more polluted than tap water because it comes right from the ground without going through the municipality’s purification stages. This increases the amounts of dangerous impurities that remain in the water and threaten your health. As such, you need to rely on a more powerful system that can deal with the unpleasant smell of the water, the bacteria and viruses that lurk in it, and the harsh minerals. Your best option is a water filtration system paired with a salt-free softener and a powerful UV light that ensure a complete and thorough filtration of the water. Without further ado, let’s have a look at the top 3 products available on the market that promise to purify your water.

1. Aquasana Rhino 500,000 Gallon

This product from the reliable brand Aquasana is specially designed to remove the impurities found in water that comes from the well. It includes the sterilizing UV light system but it can be completed with a salt-free softener that provides the cleanest and safest water. The entire pack costs around $3,000 but we can assure you that the investment will be worth it. For it to operate smoothly, you must ensure a maximum pressure of 100 PSI and you need to make sure the water temperature doesn’t exceed 90 degrees F. Once installed, it will deliver a flow rate of 7gallons/minute.
Best Whole House Water Filter for Well Water Picture


The Rhino 500,000 gallon is larger than most of the products available on the market because it consists of no less than 5 components installed in line. This is due to the smart and innovative up-flow design that maximizes the amount of water that goes through all the media. However, the multiple components don’t affect the water flow so that you will enjoy the same water pressure. It’s also a quite bulky and heavy system that weighs 80 lbs, which is about two times heavier than other models. The two main tanks are available in blue, with the large Aquasana logo on them.

Capacity and Maintenance

The quality of the Aquasana Rhino is renowned and strengthened by its specifications. It can purify around 500,000 gallons of water throughout its 5-year lifespan and you need to keep in mind that its cartridges need to be replaced either every 3 months or once per year for it to work properly and to yield as expected. If you want to enjoy ease of maintenance, you can opt for the Pro Grade installation kit that includes fittings and valves that help you install and replace cartridges with more ease.

Filtration Performance

As for its purifying abilities, it provides unmatched performance. It’s very important to look for a system that has a pre-filter installed so that the large sediments will remain stuck in this media and will not go into the other more pretentious cartridges. Also, a post filter completes the process by retaining even the last and smallest particles. Although the Aquasana 500,000 consists of only two main tanks, the water goes through 6 filtration stages that include the pre-filter for sediments, the salt-free softener that removes minerals, the copper-zinc and mineral stone media that removes chlorine, heavy metals and bacteria, the activated carbon media that reduces herbicides and pesticides, the sub-micron media for very small particles, and the UV sterilization light. All these stages ensure a 97% chlorine reduction and unsurpassed water filtration. Therefore, you can trust it to deliver clean water not only for drinking but also for cooking, bathing, and for the household appliances that use water. Since chlorine will be removed from your water, you will breathe easier and there will be fewer gas emissions into the air.

Special Technologies

It relies on the most advanced technologies that guarantee the best results, like the NAC salt-free technology that eliminates scale buildup and protects your skin, hair, and appliances from the effects of hard water. Given that no salt is used in the process, the taste and color of the water are not altered while the bad minerals are being removed. Moreover, it uses the UV Sterilight system that kills 99.99% of the chlorine-resistant bacteria, germs, and cysts that can cause severe health problems.


If you are worried about durability and how the manufacturer stands behind it, we can tell you that Aquasana provides a 5-year warranty for it. Also, you can test it for 90 days and get your money back in case it doesn’t yield as expected.

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2. Pelican PSE1800-PUV-7

The second best system that can successfully handle impurities comes from Pelican and is actually a combination of two effective systems that provide a complete water purification. Pelican PSE1800 is a great system with a proven effectiveness in removing 100% of the chlorine and contaminants found in water. The filter with softener and UV is available for the price of $2,662.


If you are planning to install it, you won’t need as much space as for the previous one because it’s more compact, consisting of only two stainless steel tanks and a small UV media. This is a more compact and lightweight unit that is as easy to set up and install as it is to maintain. The entire unit measures 27”x 50”x 18” and weighs only 32 lbs, making installation much easier. Both the filtration tank and the softener are made of stainless steel which is more durable and not prone to rusting, given it will always sit near water.

Performance & Specifications

When it comes to purifying groundwater, the system you choose must come with some features that maximize its efficiency in dealing with uncommon contaminants that are very resistant. Pelican manages to keep up with the task due to a series of specifications particularly designed to ensure the best results. What you first need to know is that it can handle 600,000 gallons of water over 5 years of operating and that its prefilter should be replaced every 6 to 9 months to make sure it will still be able to retain large sediment.

An impressive feature is that the flow rate delivered reaches 10 gallons per minute so that your water pressure will not decrease after installing the unit. Speaking of pressure, the maximum limit is 80 PSI and you need to keep it in mind when installing it or it will not last for too long. Also, you shouldn’t use it on hot water that exceeds 120 degrees F. The PSE1800 is powerful enough to handle up to 3 bathrooms and for more power, you can always try the PSE2000.
The list of advantages is very long and it includes very helpful aspects such as the 100% chlorine removal that makes it the most efficient unit out there. Also, it can fight chloramine, a dangerous compound found in water that is even more harmful than chlorine itself. Moreover, the combination of filter and pre-filter can combat bacteria, sediment, heavy metals like mercury and lead, pesticides and herbicides, industrial solvents, and chlorine-resistant germs and viruses.

Although it includes only one main cartridge, it features a 6-stage filtration process that involves a blend of high-grade activated carbon and the patented bacteriostatic copper-zinc oxidation media. This combo media along with the sediment pre-filter ensure clean water for drinking and cooking. In order to solve the hard water problem, Pelican has designed the Nature Soft salt-free water softener that removes minerals from the water without the use of salt or chemicals. It’s guaranteed to reduce 99.6% scale from the pipes and appliances, thus maximizing their durability. This way, the water resulted is softer and more suitable for your skin and hair that are damaged by the harsh minerals and also for cleaning your house and the proper functioning of your appliances.

It is very energy efficient as it doesn’t require electricity to operate and it doesn’t waste water during the purification process. For a complete cleaning, the manufacturer has added the Pelican UV max sterilization system that kills 99.9% of the bacteria, germs, and cysts found in groundwater and that are harder to remove. For worry-free operating and maximum satisfaction, it comes with a 90-day money back guarantee and an impressive lifetime warranty on all components.

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3. Crystal Quest Eagle 4000

Our third choice is the Crystal Quest Eagle 4000 paired with an efficient softener and a UV sterilizer. This trio guarantees maximum efficiency in reducing water impurities and hardness. As for the cost of adding this improvement to your home, it starts at $2,950 for the filter and softener and continues with $529 for the 12 GPM UV filtration system.


In terms of design, it is the embodiment of versatility due to the two finish choices that include stainless steel or fiberglass, both being equally effective and resistant to rust and wear. The softener tank is also available in two different sizes, 10” x54” or 12” x52”, which depend on the amount of resin contained but both are compact enough to be installed without making huge modifications to the pipes. The weight of the unit is not specified but according to the measurements, we can only assume it’s a lightweight system.

Performance & Specifications

Its versatility doesn’t stop at design and it continues with the option of choosing between a 750,000-gallon capacity or a 1,000,000-gallon capacity. As such, it is able to deliver a 9GPM or a 13 GPM water flow, depending on the size of the cartridge that you choose. The lifespan of the unit also depends on the capacity, so that you will enjoy a 5 to 7 years period for the smaller unit and a 7 to 10 years period for the bigger one. However, the installation specs are the same for both units, namely a maximum pressure of 90 PSI and a maximum temperature of 90 degrees F.

What is not specified by the manufacturer is the amount of time that needs to pass until you must replace the pre-filter or the post filters. There are also two types of backwash available, manual or automatic, involving pushing water backward through the media as preventive maintenance. Additionally, the complexity of the purification process enhances the quality of this product. The tank contains a blend of substances which, along with the pre-filter and the post filters, create a 15-stage purification process designed to remove up to 99.99% of the chlorine and impurities. Water flows through the sediment pre-filter, then rushes to the second and third stages through a bed of calcium carbonate that alkalizes the water, thus improving its quality. Then, it’s off to the ionizer media for stages 4 and 5 and into a coconut shell granulated activated carbon that removes the bad odor and taste of the water.

The next two stages include the Eagle Redox Alloy, an innovative type of media that uses electrochemical oxidation-reduction and adsorption to remove water contaminants. Stage 9 is an ion-exchange resin that removes heavy metals, stage 10 is a bed of gravel that improves the taste of the water, while stages 11 and 2 involve two magnets that increase the magnetic field to increase water solubility. Stage 13 represents the Eaglesorb Anti-scale media tank, a patented media that treats hard water without adding salt. In stage 14, the water passes through a solid carbon cartridge that retains solvents and VOCs and finally, in stage 15, the water goes through the ultrafiltration membrane that kills bacteria and germs.
Eventually, the filtration system involves the UltraViolet sterilizer and the 3-stage water softener, two reliable units that complete the cleaning process by lowering water hardness and killing chlorine-resistant bacteria. The entire system is covered by a 7-year warranty that protects it against workmanship malfunctions. Unfortunately, the manufacturer doesn’t grant a money-back warranty for it so you must weigh your options before paying for this product.

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4. ABCwaters Built Fleck 5600sxt with Upflow Carbon Filtration

Water that comes from the well is usually hard and filled with a wide range of health-threatening contaminants. Thus, the need for a proper purification system is real, and ABCwaters ensures all of your problems will be in the past as it provides with a water softening and carbon contaminant removal system which exceeds expectations performance-wise. It comes with a complete installation kit and comprehensive guides that help you install it on your own. When it comes to company assurance regarding the product’s quality, know that the manufacturer provides a 10-year warranty on the tanks, a 5-year warranty for the Fleck valve, and a 60-day trial period during which you can test and return the system if you are displeased with it for any reason, receiving a full refund if you do not like it.


As expected, it comes with tanks that are rather large in size. The two tanks it comes with are American-made, so quality in their manufacturing is ensured. When it comes to design, know that the mineral tank measures 10 inches in diameter, while the brine tank measures 36 inches in width. Furthermore, as it is a 48000-grain capacity system, it is ideal for use in households where two to five people live, thus being a perfect choice for medium and large-size residences.

Performance & Specifications

As aforementioned, this is a 48000-grain system that is best suited for households where two to five people live. Considering its large capacity, it’s safe to say that the pricing for the system is fair. In terms of performance, it is hard to surpass as it not only tends to soften groundwater but because it handles the removal of harmful water pollutants that are commonly found in this source.

The upflow carbon contaminant removal media of the system can actually handle removing a wide range of water contaminants, including chlorine, chloramines, organic contaminants, chemicals, pesticides, herbicides, heavy metals, MTBEs, THMs, odor and bad taste causing impurities, and so on. As it provides this efficient contaminant removal rate, you are sure to hydrate, use and, cook with truly pure water.

One of the aspects that most add to the system’s appeal is certainly the digital valve meter that provides with accurate readings and that allows you full control over the operation of the water treatment process. Another interesting fact is that the softening system actually uses resin in order to prolong its lifespan and increase efficiency.

It is safe to say that this is an Eco-friendly system as the up-flow design, ensures optimum filtration efficiency without the need for backwashing. As you don’t have to tend to backwashing, there is no electricity required for the system’s operation, and water waste is an inexistent issue. Thus, if you want to purify the water you drink and use in an effective, efficient, and environmentally-friendly manner, you can confidently opt for this system.

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5. Home Master HMF3SDGFEC

Although it does not appear in the comparison matrix above, this does not take away from the effectiveness of the Home Master system when it comes to purifying groundwater. Reasonably priced, reliable, and easy to install, it is one of the selections we strongly recommend you look over before making a decision as you might regret not installing it.


In terms of design, it is one of the more simplistic systems out there, which is good news considering that you actually need it to clean the water you use and consume, not use it as a centerpiece in your home. It measures 25 inches in height, 24 inches in width, and 9 inches in depth, so it is rather compact as opposed to other systems. Furthermore, as it features steel mounting brackets, you can even mount it on 16-inch studs to make sure it stays out of your way.

Performance & Specifications

This system employs an effective 3-stage filtration to tend to the removal of any and all impurities which lurk in the water. During the first filtration stage, a multi-gradient depth sediment media that features 4 layers of filtration, a 25-microns, a 10-micron, a 5-micron, and a 1-micron layer, is used to deal with chemical and bacterial contamination. This leads the way for a maximized proficiency of the other two filtration stages as a hefty part of the contaminants is now taken care of. During the second stage, a radial flow iron reduction media is used to reduce iron in the water up to 3 ppm. Last but not least, during the third filtration stage, a radial flow granular activated coconut shell carbon media is employed to remove the remaining chemicals and handle any source of unpleasant taste or odor. Thus, the water that now comes out of all of the taps in your home is clean, smells good, and tastes good.

As it provides a 15 gallons per minute flow rate, it is a system which you can confidently install in a medium to large-sized home as it handles the large amount of water which needs to be purified at all moments of the day. Best of all, the coconut shell carbon media boasts a magnificent 95000-gallon capacity which ensures maintenance work won’t be needed all that often, cutting costs on replacement of parts. Seeing how most systems tend to get quite expensive when it comes to maintenance work, this is good news. The feed water pressure ranges from 20 to 90 PSI, and the recommended feedwater temperature ranges from 40 to 100 degrees Fahrenheit. The replaceable multi-gradient density media it comes with ensure fine filtration to guarantee a complete lack of sediments in the water. Furthermore, these cartridges boast a great dirt-holding capacity which makes them quite effective at their job.

However, do note one aspect – this system is for non-chlorinated groundwater only, so if you know that there is chlorine in the water that supplies your home, this is not the right acquisition for you to make. But if this is not the issue, we strongly recommend you go with it as it can remove up to 95% of all contaminants, leaving the water clean and safe. Best of all, the manufacturing company backs it with a 2-year warranty on parts and labor, meaning that you won’t need to worry about repair or replacement costs during this period of time.

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6. Express Water WH300SCKS

Using a comprehensive 3-stage filtration process, it ensures crisp clean water from all faucets in your house. Furthermore, as it boasts a high 0.25 GPS flow design, you won’t witness any pressure drops after installing it. Speaking of, when installing it, you have one of two options to pick between – as it is fitted with a freestanding frame, you can either mount it, or you can opt for the classic on the ground placement.


As it features a total of 3 tanks where it houses the filtration media utilized, it measures 24.5 inches in width, 29 inches in height, and 8.5 inches in depth, a reasonable footprint for a product in its niche. As aforementioned, when you install it you can either opt to mount it or leave it on the ground. For convenience in use and to take the guesswork out of maintenance, it features a clear first stage housing that provides easy monitoring to figure out when cartridge replacement is needed. Furthermore, each cartridge features a pressure gauge that allows easy system monitoring.

Performance & Specifications

As previously mentioned, the system utilizes a 3-stage purification process to ensure clean water will run through the pipes and end up in your glass. The three media it uses include a sediment media, a KDF media, and a CTO media. During the first stage, the 5-micron sediment media effectively reduces coarse sand, dirt, scale, silt, rust, and sediments, its high capacity of holding what it collects ensuring few cartridge changes required as the time passes, and prolonged longevity of the system as a whole. As the second stage unfolds, the KDF media tends to the removal of hydrogen sulfide, iron, and heavy metals it encounters, all while inhibiting the growth of fungi, bacteria, and algae. Lastly, during the third stage, the CTO media absorbs all chemical content it stumbles upon and reduces VOCs, TOCs, and turbidity.

A set of filters can be used for purifying approximately 100000 gallons of water, which means that the cartridges will require replacement 1-2 times per year tops. Add to its cost-effective maintenance the fact that it comes at a rather reasonable price when compared to other products in its niche, and you can safely say that this is a smart acquisition budget-wise. It features large 1-inch connections and housing that are specially designed to not affect the pre-existing water pressure level.

One aspect you must keep in mind when you install it is that it should be kept in a dry area where direct sunlight won’t hit it, and freezing temperatures will never occur. It works with 45 to 80 PSI, and water temperatures that range from 40 to 100 degrees Fahrenheit. One of its best features is the fact that it includes pressure release buttons for all filters, thus enabling you to stabilize them in a convenient manner whenever needed.

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7. iSpring WGB22B

If you have taken an interest in water purification systems before, iSpring is a name that has most definitely already popped up. This is one of the best companies to produce water cleansing systems, so it comes as no surprise that the WGB22B manufactured by it appears in our top. A reasonably priced entry which perfectly treats water that comes from the well, making it safe for use and consumption, it is a product we hold dear and recommend to those in need of a purifying system in their homes.


Design-wise, it is hard to comment on this product as it actually boasts a profile which ensures it will never get in your way. Its 35.3-pound weight makes it a cinch to maneuver it during the installation process, which is a plus especially for those who won’t be accompanied during the procedure, doing it entirely on their own. When it comes to its size, know that it features two 20-inch by 4.5-inch cartridges which obviously ensure it won’t occupy a lot of space where you install it. another interesting design element it boasts, one which reflects upon the quality of its performance, is the fact that the input and output ports have a 1-inch diameter which makes the system handle a great flow of up to 15 gallons per minute.

Performance & Specifications

Now let us talk about the real aspect which interests us in regards to this purification system, more precisely the performance it delivers. As it features 2 filtration cartridges which ensure a minimal pressure reduction, you won’t notice any changes in the way the water comes out of the taps in your home after the installation point. The CTO carbon block media it features actually uses a coconut shell carbon which maximizes its filtration efficiency and that ensures the removal of unpleasant tastes and odors from the water.

The polypropylene sediment media, on the other hand, plays the role of purifying sediments down to 5 microns. Seeing how one of the main issues with groundwater is the fact that it is filled with dirt and small sediments, the fact that this system comes with a cartridge which specializes in the removal of the impurities makes it all the more efficient. In terms of efficiency, the rate of the system is an impressive 98% when it comes to the removal of chlorine, chloramines, sediments, chemicals, and other contaminants which lurk in the water and ruin its taste and odor.

The coconut shell activated carbon media it features is able to purify up to 100000 gallons of water before it needs to be replaced, meaning that regardless how large your household is, you won’t need to change it before a full year passes. As it boasts a multi-layer filtration, this system ensures fewer clogs will occur, and that pressure won’t be lost.

Unfortunately, we must mention the fact that it does not reduce total dissolved solids, but this shouldn’t be a big issue considering that it provides an overall hard to top performance. It is easy to install, the comprehensive directions provided in the accompanying manual making it easy for a single person to take up this job. In addition, the manufacturing company, iSpring, offers a 1-year warranty against defects in parts and labor for this purification system, so there is no need to worry about any costs while the warranty period is active.

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8. 3M Aqua-Pure AP903

For starters, this is one of the more reasonably priced entries on the market which makes it accessible to a wide range of customers. Furthermore, filter cartridge replacement is not a costly ordeal, nor does it need to be performed too often but rather only once per year, so it’s one of your best picks budget-wise as a whole. Part of the successful and effective AP900 series, it is perfect for well and city water applications, a versatility few systems provide.


As the materials that go into its manufacturing are FDA CFR-21 compliant, you can rest assured as it boasts a quality, safe build. The housing measures 27 inches in height and 6 inches in diameter, and seeing how it weighs only 7.5 pounds, maneuvering during the installation process won’t be difficult at all. The head assembly includes a mounting bracket to ease your work when you set it up, while the 304 stainless steel material the head is made with grants it corrosion resistance and assures the taste of your drinking water won’t be affected. Additionally, the cartridge boasts a really sanitary design as, when you must replace it, you won’t enter into contact with the filter media.

Performance & Specifications

As it features 1-inch NPT inlet and outlet plumbing connections, it is able to provide a high flow rate of 20 gallons per minute or 75.7 liters per minute, ensuring water pressure won’t be affected regardless of how many taps are running at the same time. The maximum operating pressure it can work with it 125 PSI, while the maximum working temperature it complies with is 100 degrees Fahrenheit.

The high 100,000-gallon capacity of the cartridge makes it perfect for large homes and light commercial appliances and it ensures replacement will be needed only once every 12 months. Its 5-micron activated carbon filter ensures the purest drinking water as it tackles removing even the smallest contaminants. This high efficiency in impurity filtration even helps prolong the lifespan of water using appliances, and it even improves the efficiency of the water heater by up to 27% as it reduces sediment. However, we must underline that the department in which it excels is removing particulate and chlorine taste and odor, so if you tested your water and these are two of your main issues, installing it will make a big difference.

An electronic countdown timer magnet that you can mount on the refrigerator is included with the purchase to keep you aware of how much time is left until routine maintenance is due. The Sanitary Quick Change design of the system not only ensures you won’t have contact with the filter media to ensure sanitary maintenance, but it simplifies the whole process as well as there is no need for any special tools for the procedure. When it comes to backing, the manufacturing company covers the stainless steel filter head for 25 years for defects in materials and labor, while the disposable cartridge is warranted during the first year of use.

9. Bluonics 3-Stage

It might not be manufactured by one of the more resounding names on the water purification market, yet this 3-stage system does deliver from all points of view as it not only tackles contamination issues typical for well water in a successful manner, but it does so while maintaining decent upkeep costs, which is important considering that filtration media replacement generally tends to be financially draining. Additionally, the asking price for the system as a whole isn’t as high as it is with most entries in this niche, which is another highlight.


There’s not much to say in terms of design except that it is space-saving, so you won’t have to worry about bulkiness, and that the construction is quite heavy-duty, ensuring that eventual impact with other objects won’t result in the housings cracking easily.

Performance & Specifications

As aforementioned, there are 3 different filtration stages through which the water is passed before it ends up in your glass, pot, or bathtub so that you are ensured of using and consuming 100% impurity-free water that doesn’t put your health in peril or affects household appliances. In the first filtration stage, a 20-micron string wound sediment filter is used to remove particles like iron, rust, sand, or dirt in order to enhance the efficiency in purification of the filtration media that will follow, enhance flow rate, lengthen filter lifespan, and lower pressure drops.

In the second stage, a 5-micron carbon block filter is used to remove chlorine to improve the taste and odor of the liquid, as well as other contaminants like chemicals and organic solvents. During this stage, impurities that are linked to cancer are removed as well, impurities that include pesticides, herbicides, trihalomethanes, volatile organic compounds, insecticides, MTBEs, and more. Lastly, in the third stage, a 1-micron sediment filter is used to remove the remaining sand, silt, dirt, and rust down to 1 micron to ensure no health-threatening or appliance quality decaying contaminants are left behind.

The filters measure 4.5 by 20 inches, which is expected considering that we previously stated it isn’t a bulky system. Designed for use in large homes or even for commercial purposes, it features 1-inch NPT brass inlet/outlet connections that grant a high 12 gallons per minute flow rate.

The Dangers Lurking in Wells

It’s commonly known that tap water is filled with contaminants but what about water that naturally comes from the groundwater? Few people are aware of the dangers that lurk in the water coming from the wells and even fewer take action in eliminating these dangers. In case you never thought about purifying your water, keep reading to discover the impurities you are at risk of ingesting when you drink the water.

Bacteria and cysts

One of the main concerns is the bacterial contamination that can occur for various reasons, especially if it is located near a septic system or a sewer. E.Coli is the most popular bacteria found in the water that can cause severe kidney damage.

Heavy metals

You are not safe from lead and mercury even if your water supply is a well and not a municipal pipe. These harmful metals can also be found in wells and they are highly dangerous to the nervous system. However, the main threat is arsenic that can lead to fatal cardiovascular issues and cancer.

Nitrites and nitrates

These two substances are very dangerous to small children in particular, but everyone is at risk when drinking water contaminated with nitrites and nitrates. They can also come from sewers and septic systems located near the well but can also originate from pesticides and agricultural residues. Also, if the soil is rich in nitrate, there are more chances of getting it in your water.


More often than not, groundwater is rich in minerals and that is not always a good thing. Minerals like calcium make it very hard while sodium can be dangerous for your teeth. High levels of minerals affect the water quality and your health too.

Volatile organic compounds

In case you are not familiar with the name, learn that we are referring to industrial chemicals that can be found in water and that seriously threaten your health. Solvents, pharmaceutical residues, and other contaminants often reach into the soil and into the groundwater, thus affecting the water quality.


Many gasses are found in it and although you might think that you can detect all by the smell, you are wrong. While sulfur, for example, is easy to spot due to the rotten egg smell, radon is a dangerous gas that is tasteless, colorless, and odorless. When you get water with radon into your house, it is eliminated into the air and reaches into your lungs even if you don’t drink the water.

Test Results


#1 – Aquasana #2 – Pelican #3 – Crystal Quest #4 – ABCwaters #5 – Home Master #6 – Express Water #7 – iSpring
Purification efficiency
There is a wide range of contaminants lurking in your water, and it is the purpose of these systems to get rid of them. But how effective are they exactly? To test each product’s effectiveness, we tested water samples before and after the installation of the systems to check how they did in regards to purification, chlorine removal being our main point of interest.
9/10 10/10 10/10 9/10 8/10 9/10 8/10
Softening efficiency
Just as we did when it came to the purification effectiveness of these systems, when we tested softening efficiency, we tested a water sample before and after the installation of each system and we compared results. The higher the efficiency of the system the better as scale buildup and other hard water related issues are less likely to ever appear.
10/10 10/10 10/10 9/10 8/10 9/10 9/10
Sterilization efficiency
When we refer to sterilization efficiency, we refer to the capability of the systems to remove bacteria and germs from the water. Alas, this is not a function that all systems come with, but rather only the top tier ones, and the effectiveness of the purification provided by the systems that do feature sterilization capabilities is unmatchable.
10/10 10/10 10/10 6/10 8/10 8/10 7/10
Cartridge replacement
As filtration media is involved, you have to perform cartridge changes periodically – for each system there is a certain maintenance schedule provided by the manufacturing company on the spec sheet or website. We mentioned the cartridge replacement frequency in our comparison matrix too to give you a clearer overview of what you should expect in terms of maintenance. When it came down to testing convenience from this point of view, we changed the cartridges ourselves to see just how complicated the process actually is.
10/10 9/10 9/10 8/10 9/10 9/10 8/10
Overall score
98% 98% 98% 80% 83% 88% 80%

Buying Guide

The efficiency of a filtration system highly depends on its features and functions and since not all of them are equally effective, it’s best to know which are the models that provide the best results.

  • It should have a wide array of contaminants removed

    First of all, you need to read the product’s specs and see how many impurities it can remove. The wider the array, the more effective it will turn out to be and the more protected you will be. Our top products can remove a wide range of pollutants that alter the taste, odor, and color of the water so that you can see and feel for yourself that the water has been thoroughly cleaned. Heavy metals like lead and mercury, sediments, nitrates, and other stuff should be completely removed by the system you choose.

  • The softener is a great addition

    For groundwater to be highly purified, a softener is in demand to remove the hard minerals that exist in the soil and reach into the water. If your house is supplied with water from the well, you will notice more limescale buildup and more residues in the glass because the water has a high concentration of minerals. Although some of them are good for your health, others are harmful, like sodium and barium, and the filter will know which one to trigger.

  • Make sure you check for a UV light

    Unfortunately, there are far more bacteria and germs in groundwater than in tap water so a UV light feature is almost mandatory. Given the proximity to the soil and all the residues that get in it, there are high chances of contamination with dangerous bacteria from animals, herbicides, agricultural treatments, and feces. Therefore, having a filtration system with a UV light increases its efficiency and enables it to remove the disease-causing bacteria and germs.

  • Check the chlorine reduction

    Not coming from the municipality doesn’t mean that groundwater doesn’t contain chlorine and that your system shouldn’t have a chlorine removal cartridge too. Given that these are whole house systems, they can remove up to 99% of the chlorine in the water, thus improving its taste and odor.

Rating Our Picks

Rating Criteria Importance/Impact Product to Receive the Best Score
Filtration capacity The capacity provided refers to the amount of water it can handle purifying before it will require replacement. The higher the capacity the better, obviously, as you won’t have to change the main cartridge of the system for a longer amount of time, thus investments being reduced. Crystal Quest Eagle 4000
Purification stages We gave higher scores to systems that passed the water through more filtration stages as they ensure higher water purity levels. Basically, as the water is passed through more filtration media, a bigger amount of impurities is removed, thus fewer contaminants ending up in the water you consume and use. Crystal Quest Eagle 4000
Chlorine reduction Chlorine is the most common contaminant lurking in water, regardless of the source, so we had to make sure for our picks to remove as much of it as possible. The systems received scores based on their efficiency when it comes to removing this specific pollutant, thus chlorine removal capabilities weighing when it came to the way our top looks. Pelican PSE1800-PUV-7
UV sterilization Groundwater is usually filled with viruses and bacteria which, evidently, pose a huge threat to your health when ingested or when they enter into contact with your skin. Thus, we gave more points to the systems that employed UV sterilization in order to eliminate these health-threatening pollutants. Aquasana Rhino 500,000 Gallon, Pelican PSE1800-PUV-7, Crystal Quest Eagle 4000, iSpring WGB22B
Salt-free softening One of the most common issues is the fact that it is hard, so softening has to be one of the benefits provided by the system for it to even be considered a valid option. However, salt-free softening is superior as it provides a safer method to reduce water hardness. Aquasana Rhino 500,000 Gallon, Pelican PSE1800-PUV-7, Crystal Quest Eagle 4000, ABCwaters Built Fleck 5600sxt with Upflow Carbon Filtration, Home Master HMF3SDGFEC, Express Water WH300SCKS, iSpring WGB22B
Warranty It is preferable for the warranty agreement to be valid for a long amount of time as this shows that the product will be replaced or repaired free of charge by the manufacturing company when this type of service will be needed as a result of defections. Pelican PSE1800-PUV-7

Common Mistakes in Choosing a Water Treatment System

Most of the times, people choose a system for their well without knowing the basics of this system and without doing enough research prior to purchasing. Thus, they often pick the wrong type because they are not sure which one is the best. In order to avoid making a bad purchase, you need to know more about the mistakes you should never make.

  • Not analyzing water chemistry

    Tap water and groundwater differ in chemistry meaning they don’t contain the same substances so a system for tap water is likely to fail in working with water that comes from the well. Therefore, it’s crucial that you know what your water contains before installing a filter because if it’s not designed to remove that particular component, like iron, it could be severely damaged. You will have to test the water for metals like lead, iron, and manganese, for calcium, pH, alkalinity, and turbidity.

  • Not knowing how the system works

    Every system uses a pump that can be positioned in depth or closer to the surface of the ground. Also, some have a tank that holds a larger amount of water before sending it to every water source in your house while others use the force of gravity to push the water. Since there are so many things that differentiate them, you must know how your water system works before installing a filter on it.

  • Not verifying the water pressure and flow rate

    Before choosing a treatment system, you need to find out the flow rate of your well in gallons per minute because many systems require a specific flow rate and not reaching it could result in a faulty operation. The pressure is also important because the system itself will minimize the pressure. If it gets too low, the water might not be able to reach to all your faucets.

  • Not reading the specifications

    When analyzing it, you have to check its technical specification to see if it matches your flow rate and pressure and you need to see what pollutants it removes. Only then, you will be able to pick the one that will do the best job at your house.

Frequently Asked Questions

1. What is the difference between a regular system and a groundwater specialized system?

Traditional whole house systems are highly efficient and they work very well in removing dangerous pollutants. However, well water contains other impurities that cannot be targeted and removed by a mainstream filter, so a combination of systems is in demand. Thus, the systems designed specifically for well water include all the necessary stages for removing all unwanted pollutants.

2. What happens when it reaches its maximum filtering capacity?

That is the moment when you need to replace the filter cartridges. Otherwise, the unit will no longer be able to work properly and the filtering results will be less visible. Every filter has a certain lifespan which guarantees optimal performance and when that lifespan is reaching its end, the performance begins to significantly drop.

3. What does the flow rate specification stand for?

The flow rate is a crucial specification to look into as it indicates whether or not the system will restrict water flow. If not chosen properly, the water coming out of the faucet will be reduced or you will end up scalded when taking a shower while someone else uses the faucet in the kitchen, for example. The ideal flow rate for a whole house unit generally ranges from 7 to 15 GPM. To figure out exactly what flow rate you require the system to deliver, call in a local professional plumbing contractor to calculate it.

4. Where should I install it given that the system is designed for groundwater?

Being a whole house model, it goes on the pipe that enters your house, the one that supplies it with water. The need for professional assistance from a plumber could come in question, especially if you do not have prior experience with this type of procedure.

5. How does the presence of sterilizing technology impact the system’s performance?

Sterilizing technology ensures higher-quality water for your personal consumption and use as it aids in the destruction of microorganisms like germs, viruses, and bacteria. As these health threats are removed from the water you use, complete safety for you and the other members of the household is entrenched.

If the water which “fuels” the appliances in your home, you bathe with, and drink comes from the well and not the municipality, there are a few problems that arise as, generally, well water is filled with organisms and contaminants unlikely to exist in other water sources. However, you need not fret as any of the selections presented in this article do more than a spectacular job at purifying the impure water to make it safe for your use and consumption.

Evidently, our top pick which comes from Aquasana does the best job from all points of view, the 6-stage filtration process it employs during which it uses a sediment pre-filter, a salt-free softener, copper-zinc and mineral stone, a sub-micron post-filter, a UV filter, and an activated carbon filter making it a worthy match for contaminants and impurities of all types. Close to it in performance is the Pelican entry which not only uses 6-stage filtration to clean the water before you use or drink it, but that requires major maintenance only once every 5 years. If you are in need of a budget solution, however, the iSpring is the model we recommend. What delights the most is that it doesn’t sacrifice its water purification capabilities despite the small price, so you enjoy quality while saving some money too if you go for it.


  • Nathan

    Won’t a whole house filter do the trick with well water? I never thought about a separate filtration system for the well. What is the difference between the two?

    • The water coming from the municipality and the water coming from the well contain different contaminants and one device might not be effective in removing them. For example,well water is higher in nitrates and gasses while tap water contains chlorine and more lead. As such, you must adapt the filtration system to the water supply and make sure it will rid the water of the specific pollutants.

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