Best Reverse Osmosis System for Well Water 2020 – Reviews & Top Picks

Last Updated on September 22, 2020

Great filters to purify your drinking water_john kasawa_shutterstock

Reverse osmosis is a method of removing contaminants and impurities from water. In fact, it has proven highly effective at removing everything from cryptosporidium to E. coli, as well as contaminants including arsenic, fluoride, lead, and more. To do this, it uses the opposite effect of natural osmosis, forcing water through a reverse osmosis membrane.

This membrane is around 0.0001 microns, which means that almost nothing can pass through the filter other than clear and clean water. They can also include pre- and post-filters, as well as a re-mineralization filter that adds beneficial compounds like calcium back into the water before it is delivered to the taps. Although most reverse osmosis systems are designed for use on a single outlet, usually the kitchen faucet, whole-house systems also exist and can clean your water at the source and for the whole house.

There is a wide array of filtration options, and the system you choose will determine factors such as maximum output flow. To help ensure that you get the best reverse osmosis system for your well water supply, we have compiled a list of reviews for some of the most popular products.


A Quick Comparison of Our Favorites

Image Product Details
Best Overall
Winner
APEC ROES-PH75 Reverse Osmosis Water Filter System APEC ROES-PH75 Reverse Osmosis Water Filter System
  • 75 GPD of purified water
  • 6-stage filter
  • Remineralization adds calcium and magnesium
  • Best Value
    Second place
    Express Water RO5DX Reverse Osmosis Water Filter System Express Water RO5DX Reverse Osmosis Water Filter System
  • Cheap
  • Replacement filters included
  • 8 gallons per minute filtration
  • Premium Choice
    Third place
    iSpring WGB32B Water Filtration System iSpring WGB32B Water Filtration System
  • Produces good tasting water
  • Removes chlorine and other contaminants
  • 15 GPM peak flow rate
  • APEC ROES-50-A Reverse Osmosis Drinking Water Filter System APEC ROES-50-A Reverse Osmosis Drinking Water Filter System
  • Cheap
  • Inexpensive filters
  • Easy installation
  • Whirlpool WHER25 Reverse Osmosis Filtration System Whirlpool WHER25 Reverse Osmosis Filtration System
  • Cheap
  • Fewer filters to replace
  • Decent performance
  • The 7 Best Reverse Osmosis System for Well Water – Reviews 2020

    1. APEC ROES-PH75 Reverse Osmosis Water Filter System – Best Overall1APEC Water Systems

    The APEC ROES-PH75 is an under-sink reverse osmosis water filter system. It will produce 75 gallons of purified water per day, and approximately three times the amount of water goes to waste as is purified, which is a decent return and is achieved thanks to the system’s automatic shutoff valve and flow restrictor.

    The water goes through 6 stages of filtration and the APEC ROES-PH75 offers remineralization of the water, adding minerals like calcium back into the water. Filtered water can taste bland, but remineralization returns the compounds that give water its flavor.

    Installation is simple and should only take somebody with reasonable DIY skills about an hour to complete. Replacement filters are inexpensive and will need replacement approximately every year. They are seated in housings and are a little trickier to replace than modular filters, but still easier than some competitors.

    Pros
    • 75 GPD of purified water
    • 6-stage filter
    • Remineralization adds calcium and magnesium
    • Simple installation
    • 3 gallons of waste per gallon of filtered water
    Cons
    • A modular filter would be easier to replace

    2. Express Water RO5DX Reverse Osmosis Water Filter System – Best Value2Express Water RO5DX Reverse Osmosis Filtration NSF Certified

    The Express Water R05DX reverse osmosis water filter system costs less than most other filters on the list, utilizes a 5-stage filtration process, and produces up to 50 gallons of purified water every day with an output rate of up to 0.8 gallons per minute. It has a flow restrictor and auto-shutoff to help minimize the wastewater produced, and it even includes replacement filters, which help make it the best reverse osmosis system for well water for the money.

    The one thing missing from this system is a remineralization filter, as the water produced can be a little tasteless. Also, some of the fittings are of a lower quality than in more expensive units, but that’s to be expected with something that is around half the price of some others.

    There have been some occasions where the system only produces less than a gallon of water per day, which is far less than the expected level, and it seems as though this has something to do with water pressure. If you have low water pressure, it might be better to look at a different reverse osmosis (RO) system.

    Pros
    • Cheap
    • Replacement filters included
    • 8 gallons per minute filtration
    • Easy to install – you don’t even need a wrench
    Cons
    • Not suitable for weak water pressure
    • Some components are cheap

    3. iSpring WGB32B Water Filtration System – Premium Choice3iSpring WGB32B 3-Stage Whole House Water Filtration System

    The iSpring WGB32B is a 3-stage whole-house water filtration system. As a whole-house system, it is more expensive than most other options on this list. It also isn’t strictly a reverse osmosis system, but it is a good alternative if you need to purify the water for your whole house while maintaining a decent water flow rate from your faucets and appliances.

    The 3 stages of filtration are a single sediment filter and two carbon blocks. It has a peak flow rate of 15 gallons per minute and it will work with a minimum flow rate of 15 pounds per square inch (PSI).

    The WGB32B will eliminate 95% of sediment, chlorine, and other impurities in the water. Because this system is not a reverse osmosis system, it will not minimize the Total Dissolved Solids (TDS) in your water, but this also means that you can enjoy flavorful water without having to rely on remineralization of the water. You will also need to add a water softener if you have hard water because this system does not soften as well as filter.

    Pros
    • Produces good tasting water
    • Removes chlorine and other contaminants
    • 15 GPM peak flow rate
    Cons
    • Expensive
    • Not a reverse osmosis system

    4. APEC ROES-50-A Reverse Osmosis Drinking Water Filter System4APEC Water Systems ROES-50 Essence

    The APEC ROES-50 is the smaller sibling of the ROES-75 above. This under-sink model can only produce 50 gallons of purified water per day, but this should prove enough for a small family on a typical day. It has a 5-stage filtration system that removes up to 99% of contaminants.

    It is a very highly regarded filter, produces roughly the same level of wastewater as produced by the ROES-75 (3 gallons per gallon of filtered water), but it does include everything you need in order to install it under the sink. It is easy to install, no matter your DIY skill level. It does require the use of a wrench, unlike some other models, including for the changing of filters.

    The filters are inexpensive and while the first three filters require changing every six months, the fourth and fifth stage filters only need swapping out approximately every two years. It is cheaper than a lot of other models, but it does not produce as much purified water per day, and it is also lacking the remineralization features of the bigger model.

    Pros
    • Cheap
    • Inexpensive filters
    • Easy installation
    Cons
    • 50 gallons per day is on the low end
    • Filters are tricky to replace
    • No remineralization stage

    5. Whirlpool WHER25 Reverse Osmosis Filtration System5Whirlpool WHER25 Reverse Osmosis

    The Whirlpool WHER25 is a reverse osmosis filtration system designed for installation under the sink. It is a 3-stage filtration system and while this is less than most other competitors, Whirlpool claims that it performs as well, if not better, than most other models. It also means that there are fewer filters to have to replace, reducing cost and maintenance requirements.

    Although this model is cheaper than a lot of other RO systems, it has a woefully low filtration capacity of 18 gallons of water per day, so it won’t be suitable for most families. However, it could be useful for a family bathroom or where space and budget are severely restricted. It can also be used in some RVs, although it does require a minimum water pressure of 40 PSI, so check this before buying one for your van.

    The reverse osmosis filter will need replacing every two years, while the additional filters need replacing roughly every six months. Whirlpool claims that these are longer than average but appear roughly the same as most other models on the market.

    Pros
    • Cheap
    • Fewer filters to replace
    • Decent performance
    Cons
    • Water filtration capacity is a low 20 GPD
    • Several complaints of defective units

    6. iSpring RCC7 Reverse Osmosis Drinking Water Filtration System6iSpring RCC7 High Capacity Under Sink

    The iSpring RCC7is simple, inexpensive, and efficient. It has a water capacity of 75 gallons per day, which is good considering the unit’s price point. It also uses 5 stages of filtration to remove 99% of contaminants and other unwanted additives, especially useful in well water.

    It does produce around 3 gallons of wastewater per gallon of drinking water, which is typical for these units, and if this concerns you, you can divert the wastewater to a watering or irrigation system with some extra piping.

    The filters are relatively easy to change, although not as easy as modular filters. Unfortunately, although the filters are less expensive than most competitors, they need changing more frequently, offsetting the benefits and meaning more work on your part.

    The RCC7 will work with incoming water pressure between 40 – 80 PSI. If your water pressure is higher or lower than this, you will need a pressure regulator or permeate pump, respectively.  There is a really handy water leak alarm and the unit includes both a 4-gallon pressurized tank and a faucet.

    Pros
    • 75 gallons per day of water output
    • Water leakage alarm
    • Cheap
    • Inexpensive replacement filters
    Cons
    • Poor filter life
    • 3 gallons of wastewater per gallon of filtered water
    • No remineralizer

    7. Express Water ROUV10DCG Reverse Osmosis Water Filtration System7Express Water Ultraviolet Reverse Osmosis

    The Express Water ROUV10DCG is an advanced, high capacity 6-stage water filtration system. It is on the more expensive side of the options in this list, but that’s because it does have some advanced features.

    The 6-stage filtration process includes carbon block and granular carbon filters that extend the life of the delicate RO filter, while also removing unwanted particles from the water. It has the highest daily water production capacity, offering up to 100 gallons of purified water per day, and it can produce filtered water at a rate of 0.8 gallons per minute. It is designed for easy installation, with color-coded parts that make it much easier to identify where components go and what they attach to. Pre-filters need changing every six months and the RO filter every year.

    Some systems only require changing the RO filter every two years but, considering the capacity of water output on this model, that trade-off is worthwhile, especially for larger families and heavy users. The system uses a fabric disk that attaches to the floor next to the system and detects any leaks, shutting off the system if a leak is detected. The system is well priced, but it lacks a remineralization feature, which would really benefit a model of this price.

    Pros
    • Color-coded components for easy installation
    • 100 GPD water capacity
    • 6-stage filtration
    Cons
    • No remineralization
    • RO filter needs replacing every year

    Buyer’s Guide

    Is your interest peaked about buying a reverse osmosis system for your well water, but you’re still overwhelmed by its many components? In this handy buyer’s guide, we will break down the important features of a reliable RO system so you can determine for yourself which is worth investing in.

    The most important features of an RO water filtration system include:
    • Storage tank – a storage tank enables the filtration system to pre-filter water and store it ready for use. This means that you will have filtered water ready for use as soon as you turn the tap. You won’t have to wait for water to pass through the multiple stages, so you should enjoy improved water pressure. It may be possible to replace the included storage tank, which usually has a capacity of around 4 or 5 gallons, with a larger one. With no storage tank, you can only draw water as quickly as the filtration system can filter it, which means that you will experience a limited water flow rate.
    • Water output – the water output is usually measured in the amount of water that can be filtered in a day. You will see advertised figures ranging from 25 to 100 gallons per day, but you should be aware that these figures are achieved using ideal water temperature and water flow conditions. In reality, you will achieve a lower water output rate than this figure. Lower output is usually explained by poor water pressure, and this can be improved with the addition of a permeate pump. Adding a coiled water pipe can increase the temperature of the water, which may also improve your water output rate.
    • Wastewater – RO water filtration systems are effective at removing contaminants from water, but are criticized for the fact that they produce a lot of wastewater for every gallon of purified water. Typical systems will produce around 3 gallons of wastewater, which is returned to the drain, for every gallon of purified water. Some systems have a much higher wastewater rate, while others can achieve slightly improved results. With some modification, the wastewater can be fed into the cold water faucet for additional filtering, or it can be diverted to a garden watering system.
    • Remineralization – removing contaminants from well water is highly desirable and an RO system will remove everything from chlorine to arsenic, but it also removes elements like calcium. Calcium, and some other elements, are considered beneficial and they also help give tap water a better taste. RO systems that offer remineralization add some of these minerals back into the water, increasing the health benefits of your tap water and improving its final taste.

    Conclusion

    Reverse osmosis is a water filtration process that forces unfiltered water through a fine mesh membrane to remove unwanted elements from the water. It can be used to improve city water and is especially useful in the filtration of well water that is especially high in these contaminants. Different systems offer different output levels and output capacities, while features like remineralization can improve the flavor and benefits of the water produced.

    While compiling our list of reviews of the best RO systems, we found the APEC-ROES-PH75’s remineralization combined with its affordable price tag and decent 75 gallons per day water output made it the best choice, while Express Water’s RO5DX not only offers a low price but its affordably priced filters kept ongoing costs down, too.

    Hopefully, our reviews have made it easier for you to choose the reverse osmosis filtration system that is best for your home’s well water supply so that you can enjoy great-tasting, filtered water every day.


    Featured Image Credit: John Kasawa, Shutterstock