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UV well water purifiers destroy harmful pathogens such as bacteria, viruses, and even cysts. Thus, they provide potable drinking water safe for consumption.
Another benefit is that UV light renders any microbes harmless without making use of chemicals.
Installation and maintenance of these devices are easy, too.
Plus, you can choose between models for point of use and whole house use.
But how do you find the best UV system for well water? We’ll help you!
On This Page You Will…
Best UV Light for Well Water: SpringWell SPRW-UVC5-15
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UV Filter Type: Whole House
Flow Rate: 15 gpm (Up to 5 Bathrooms)
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Runner-Up: Pelican Standard UV Disinfection System
UV Filter Type: Whole House
Flow Rate: 8.9-15.8 gpm (1-6 Bathrooms)
Warranty: 1-10 Years
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Best Point-of-Use: Crystal Quest CQE-UV-00101
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UV Filter Type: Point of Use
Flow Rate: 1 gpm
Warranty: 1 Year
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We believe the SpringWell SPRW-UVC5-15 is the very best UV system for well water available right now.
It provides excellent UV water purification, removing detrimental waterborne diseases caused by viruses and bacteria (up to 99.9%). The whole house filter works its magic on private wells, ensuring that your water supply is safe to consume.
What’s more, the SPRW-UVC5-15 UV whole house system is a breeze to install. It also contains a device which monitors performance and is responsible for controlling the unit, letting you know the amount of life remaining in the UV lamp among other things.
(SpringWell’s brilliant sediment pre-filters (PF-10 & PF-20) work extremely well with this standalone UV filter – for best results purifying well water, we recommend using them together!)
SpringWell SPRW-UVC5-15 UV Water Purifier
|Flow Rate:||15 Gallons Per Minute (Up to 5 Baths)|
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The SpringWell SPRW-UVC5-15 POE UV water purifier is best for people who want a system that’s easy to install and maintain, durable, highly effective, and backed by great customer service.
If you want a second possible choice of whole house filtration system to the SpringWell, Pentair’s Pelican Standard UV Disinfection System is a worthy candidate.
It will leave your well with purified and cleaner water, thanks to the UV dose emitted from the filter. The UV disinfection system will rid your well water of harmful microorganisms and give you peace of mind!
There is a choice of either Pelican PUV-8-P or Pelican PUV-16-P.
Pentair Standard UV Disinfection System
|Flow Rate:||8.9-15.8 Gallons Per Minute (1-6 Baths)|
The Pelican Standard is best for people who insist on NSF-certified UV water disinfection.
An affordable point of use system is the Crystal Quest CQE-UV-00101 Ultraviolet Water Sterilizer System.
The highly effective unit along with the affordable price makes this amongst the top choices when purchasing a UV filtration system.
Crystal Quest CQE-UV-00101 UV Water Sterilizer
|Flow Rate:||1 Gallon Per Minute|
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The Crystal Quest CQE-UV-00101 is best for people who want a POU UV purifier that’s easy to hook up and service, durable, very effective, and fast.
The Acuva ArrowMAX 2.0 is one of the best in the point of use category. It’s a great choice to purify well water if your budget is a bit bigger.
This is a UV disinfection system that will not only eliminate harmful microorganisms but also improve the smell and taste of your well’s drinking water!
Acuva ArrowMax 2.0 UV-LED Water Purifier
|Flow Rate:||0.52 Gallons Per Minute|
Acuva’s ArrowMAX 2.0 is best for people who want an NSF-certified UV purifier that also removes chemicals and other contaminants.
The iSpring UVF55FS UV water filter is an affordable piece of equipment that will improve the quality of your well water. However, there are some issues with its quality that we will discuss below.
Important: iSpring recommend the use of a pre-filter combined with their UV water filter in order to achieve optimum results. TDS (hardness) lower than 120 ppm or iron quantity lower than 0.3 ppm is required.
iSpring UVF55FS Whole House UV Filter
|Flow Rate:||18 Gallons Per Minute (Up to 6 Baths)|
The iSpring UVF55FS is a whole home system best for high flow applications.
The Pulsar Ultraviolet Whole House UV Disinfection System will efficiently remove any dangerous microorganisms within a well water supply that would contaminate your drinking water if left untreated.
This model from US Water Systems uses UV light and germicidal wavelengths to target and destroy all harmful bacteria, protozoa and viruses, resulting in water that is purified.
USWS Pulsar UV Disinfection System
|Flow Rate:||10-20 Gallons Per Minute (1-7+ Baths)|
|Warranty:||3 Years + Lifetime|
Offering the highest flow rate, the USWS Pulsar is best for people living in a very large home.
And finally, an option if you’re on a smaller budget: The HQUA-OWS-12 Ultraviolet Water Purifier.
The significantly lower price helps set this model apart from its competition. With that said, the price is lower because of a few unhelpful disadvantages, which we’ll discuss below.
HQUA-OWS-12 UV Water Purifier
|Flow Rate:||12 Gallons Per Minute (1-4 Baths)|
The HQUA-OWS-12 UV is best for people on a tight budget.
How do the best UV systems for well water perform when directly compared?
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|Model||Price||Type||Flow Rate||Wattage||Warranty||Additional Info|
|SpringWell SPRW-UVC5-15 UV Water Purifier||$$$||Whole House||15 gpm (Up to 5 Baths)||50||Lifetime|
|Pentair Standard UV Disinfection System||$$$||Whole House||8.9-15.8 Gallons Per Minute (1-6 Baths)||25-40||1-10 Years|
|Crystal Quest CQE-UV-00101 UV Water Sterilizer||$||Single Faucet||1 Gallon Per Minute||11||1 Year|
|Acuva ArrowMax 2.0 UV-LED Water Purifier||$$||Single Faucet||0.52 Gallons Per Minute||?||1 Year|
|iSpring UVF55FS Whole House UV Filter||$||Whole House||18 Gallons Per Minute (Up to 6 Baths)||55||1 Year|
|USWS Pulsar UV Disinfection System||$$$||Whole House||10-20 Gallons Per Minute (1-7+ Baths)||49||3 Years + Lifetime|
|HQUA-OWS-12 UV Water Purifier||$||Whole House||12 Gallons Per Minute (1-4 Baths)||40||1-10 Years|
The following are things worth considering before you go out shopping for the best UV light for well water. These are also the very same criteria we focused on when picking our top products for this guide.
UV water purifiers work best when they treat well water that meets certain conditions. This is due to how microorganisms (like viruses or bacteria) hide behind other particles in your water, which is referred to as “shadowing”.
Microorganisms that shadow are the main reason a pre sediment filter is required during UV water disinfection. Even just a standard pre-filtration system such as a sediment filter (5-micron) is enough to eliminate most suspended solids.
Well water in particular often needs added softening and filtration prior to successful use of a UV filter.
It’s important to test your well water supply before you invest in a UV water filter, so you know it matches the specifications below. If it doesn’t, you will need to have the water treated prior to commencing UV disinfection:
UV water purifiers emit their UV light in megajoules, specifically megajoules per square centimeter (mJ/cm² or µwatt*sec/cm²).
The UV dose sets UV purification apart from other types of water disinfection. When emitted in high volumes, the dose from UV light will target any microorganisms within range. The UV rays will scramble the DNA of these microorganisms, which stops them from reproducing.
Simply put: the UV light will eliminate microorganisms and their ability to replicate.
The US Department of Health and Human Services stated in the 1960s that 16 mJ/cm² was the designated minimum amount of light intensity required to destroy cysts and harmful bacteria.
Since then, this was revised to 30 mJ/cm² to ensure a bigger safety margin and also allowing for a higher success rate in destroying viruses, too.
Specific organisms will require a specific UV dose in order to remove them. E. Coli, for instance, requires a minimum 6 or 7 mJ/cm² UV dose to kill 99.99% of its bacteria cells.
As effective as UV purification is at clearing out your well water’s unwanted microorganisms, it won’t change any other characteristics, like the chemistry of the water. To change anything else, you’ll need other filtration methods.
For example, using any activated carbon filter can decrease the quantity of chemical byproducts in your water supply. This would work alongside the UV purification system.
Water flow rate of an ultraviolet disinfection system is proportional to the system’s size. To enable proper water purification, a high level of UV light must reach the water; the UV lamp intensity rate and the flow rate are largely responsible for this.
A larger UV lamp will be required for bigger UV systems in order to account for the greater flow rates , just to make sure that the well water supply is adequately disinfected.
This explains why you need to have your well’s specifications in mind when looking at UV purifiers. You should imagine how many rooms (specifically kitchens or bathrooms) that will need your supply of clean, UV treated water. The larger the volume of water that requires disinfection, the larger the purification system needs to be, as well as a larger flow rate.
The UV bulbs don’t really require much power. The wattage they need in order to work is similar to traditional light bulbs.
Whole house filtration systems normally need a 25-60 watt bulb.
A point-of-use UV filter needs a 10 watt bulb.
You may see “NSF and ANSI certifications” come up whenever you’re researching or shopping for water treatment systems. They are simply certifications that guarantee the products will deliver the results they promise.
While not completely necessary, it’s strongly recommended to purchase a UV purifier system that is ANSI or NSF certified. There are 2 main certification types:
UV water purifiers usually are smaller in size than most other water softeners or water filters. This means they won’t take up too much room! Just be aware that whole house systems need to be directly connected to the mains water.
UV filters of a steeper price are normally better quality. If you go for the cheaper makes, some parts may be of poor quality, and may lead to some problems listed below:
Obviously, going above your budget is not something anybody wants. With that said, we believe that cheap models aren’t an acceptable option when buying your UV water purification system. If you spend the money for a high quality system to begin with, you’ll be guaranteed to save money overall.
More on UV Systems for Well Water
UV filters (UV purifiers) are water systems which are designed to disinfect a water supply by inactivating potentially harmful microorganisms. This is achieved by the germicidal wavelengths in UV light that are emitted by the bulb, an important component of the overall ultraviolet water filter.
This inactivation means that microorganisms will no longer be able to reproduce, therefore keeping them from further spreading in your well water.
As well as the lamp, regular UV systems also have a protective glass sleeve, controller unit, steel chamber, and O-rings.
A UV filter is used for various types of water, one of which is private well water.
The most important element of a UV purifier is the lamp. Its bulb emits ultraviolet light – this disinfects a water supply, making it safer to drink. The germicidal rays of this light scramble and inactivate DNA of microorganisms such as cysts, harmful bacteria and viruses. The wavelengths must be at precisely 254 nm in order for the UV rays to be truly effective.
This process will guarantee your well water supply is rid of the harmful contaminants listed above, and will also rid it of algae and fungi.
A greater UV dose must be given to inactivate the most dangerous contaminants. E. coli, cysts and various other bacteria will be scrambled with a small enough dose, but viruses like Rotavirus, Polioviruses & Hepatitis A will require a greater intensity of UV rays.
The components inside a UV water purification system include:
Every part works together to enable the disinfection process. Here’s a little bit about the parts they play:
The durable stainless steel chamber contains all of the UV purifier.
Why stainless steel? It’s a protective and durable substance that holds some of the most fragile parts of the system, including the sleeve and UV lamp. This also stops the escape of UV waves!
Cheaper and less effective elements like plastic will absorb UV waves and aren’t suited for containing the system. Stainless steel, however, will stop UV rays escaping or being absorbed.
Absorption can be an issue due to free radicals, a term for unbalanced electrons that end up eventually wearing down material such as plastic. This will make it weak and gradually break up, which is when UV rays will leak out! Since stainless steel doesn’t absorb any rays, the chamber will remain intact, meaning UV waves won’t be wasted.
A UV lamp is a gas-discharge lamp. Electric arcs power them.
If you look closely at the UV lamp, you might see small beads of solid mercury. These will dissolve gradually and be vaporized, which produces the light in the UV lamp, but is also one reason regular replacement of the lamp is required.
UV lamps run on electricity. For this reason, it’s very important that it does not directly meet the water!
To work around this, the lamp is housed inside a glass sleeve, made of quartz. This stops the lamp contacting the water, and at the same time allows transmission of UV light. This is the reason UV light will transmit through a quartz sleeve, purifying the water.
These are gaskets that seal a UV purifier to prevent leaks from occurring. It’s normal for a few to be used at once.
A UV purification system has an electric controller unit, which is useful as it has various functions. These include controlling and maintaining UV light intensity, displaying remaining life in the lamp of the UV unit and also providing a troubleshooting screen.
Ultraviolet water purification is a highly effective type of disinfection of well water. Whether it’s residential or industrial areas, if you’re looking to destroy microorganisms that would otherwise contaminate your water, an ultraviolet water purifier will treat your supply and rid it of bacteria, cysts, viruses, protozoa and even algae and fungi.
UV disinfection inactivates harmful microorganisms, but won’t clear the water of any types of contaminants such as sediment, and also won’t affect the water’s taste or smell.
Water from private wells needs to be thoroughly disinfected. A UV water purifier is an efficient way of carrying out this process.
Ultraviolet treatment systems are proven scientifically to get rid of all viruses, harmful bacteria, protozoa and cysts. They’re also simple to install and operate, and are an affordable method of maintaining a clean, purified water supply. This persuades many people to invest in an ultraviolet light water filter!
An ultraviolet light filter is the optimum type of water treatment when it comes to disinfection. No harmful chemicals or unfavorable elements are put into the water (like chlorine).
Your water’s chemistry remains unchanged during UV treatment. Nothing new will be added or removed; harmful microorganisms are simply inactivated, which stops them from reproducing. The result? Water that has been purified and is safe to consume.
As mentioned above, since there isn’t anything added to UV filtered water, its chemistry remains the same, as does odor and flavor. You no longer have to pump your water with chlorine to clean it!
Maintenance requirements for a UV disinfection system are practically nothing, which is one of the main advantages of using them. Annual bulb replacement and changing the sleeve every couple of years is about as low maintenance as it gets!
Existing contaminants, such as TTHMs or lead, will remain in the water. Even the microorganisms that are inactivated remain, they simply are no longer dangerous.
If you desire to change the chemistry of your well water as well as getting rid of all types of particles, you’ll need a different type of water treatment system in addition to ultraviolet disinfection.
This is either an advantage or a disadvantage, depending on how we view it!
UV filters don’t remove anything that adds to the chemistry of the water, so the overall smell and taste do not change. Another water filtration device is needed to counteract chemicals like chlorine.
Any UV purifier will require being connected to an electric socket 24/7. This inevitably increases your overall energy bill.
Like other lamps, UV bulbs emit not only light, but heat as well. This can result in your water heating up to an undesirable level. Remember this when you use your water, as excessively hot water can damage some appliances or be uncomfortable on the skin.
Whole house systems require some plumbing in order to be installed, as they have to connect to the water mains to function properly. This may not suit every customer, and if it becomes a little daunting, you should always get a plumber to install it.
With that said, if you maybe possess experience with installing a whole house water filter and feel confident in doing so for a UV purifier, you might find it a simple enough process. At the end of the day, it’s quite similar to installing most kinds of water filters.
(If the UV filtration model is a point-of-use system, this can be done DIY!)
UV water purifiers will require maintenance eventually, as all water purifiers will. Luckily, not much is to be done here!
The UV lamp inside the protective quartz sleeve needs to be replaced every year.
Lamp life should last for 9,000 hours. As the system should run 24/7, this works out at about 365 days.
When your lamp needs to be replaced, all you have to do is take out the old lamp that is inside the sleeve, then replace this with the new one. It usually costs about $100 for replacement lamps.
The quartz sleeve doesn’t need to be replaced annually, but you should check it whenever you’re inserting a new lamp.
In particular, you should check if the sleeve is dirty. In order for UV waves to pass through effectively, the glass needs to be transparent and clean. If it seems dirty, gently wipe it!
The sleeve is recommended to be replaced every two years. Generally, this is when it performs at its peak. At a price of $30-$50, this is quite affordable.
UV filtration systems don’t usually have many problems – issues are only common when a lower quality or cheaper unit is purchased. With that said, it’s still a good idea to take a look at the entire unit every now and again to be sure all parts are performing as they should be!
There’s a few notable differences between the workings of a standard water filter and a UV water purifier for well water.
The most important thing is knowing that even though all water filters are (in theory) water purifiers, not every water purifier works as a water filter.
Yes, it’s a little confusing to read – but think of it like this; UV treatment is a type of well water purification, however it will not get rid of particles such as sediment, affect water softness or hardness, or change the odor or taste of the water!
UV purifiers will purify water supplies through the deactivation of any waterborne microorganisms. There is a difference between UV purification and standard “water filtration”, which sometimes is used incorrectly when talking about UV purifiers.
A water filter, though, is built to directly remove harmful particles and other pollutants by employing various filter media. These include;
Heavy metals, salts, chemical agents (such as disinfection byproducts or industrial strength solvents) and more are removed by this filter media.
When these types of contaminants are removed, it can lead to a superior water taste and odor.
Finally, if you’re wondering what similarities regular water filtering and the ultraviolet purification process have? Mostly, it’s that they both eradicate bacteria, cysts and viruses, leading to better water quality!
I hope this list of the best UV systems for well water was helpful. Questions? Ask away!
And keep in mind: We’ll add a new UV light for well water review occasionally. So come back for more!