A reverse osmosis system with UV light combines a membrane designed to reduce dissolved contaminants with ultraviolet treatment aimed at living microorganisms. The right choice depends on your kitchen setup, water source, daily water needs, and comfort with filter changes. Below, we compare three under-sink options and two countertop systems, including what each does well and what to check before buying.
Quick Comparison
| System | Style | Key details | Best for |
|---|---|---|---|
| APEC ROES-PHUV75 | Under sink | 7 stages, UV, calcium mineral stage, 75 GPD | Those who want UV plus remineralization |
| Ecoviva Mate 3 UV | Countertop | 9 stages, UV, 169-ounce tank, 44-ounce pitcher | Renters and households that want no-plumbing setup |
| iSpring RCC1UP | Under sink | 6 stages, UV, booster pump, 100 GPD | Higher-capacity under-sink filtration |
| Purevua PR1-A | Countertop | 6 stages, UV, glass pitcher, up to 2-liter output per cycle | Portable use without plumbing |
| APEC ROES-UV75 | Under sink | 6 stages, UV, 75 GPD | Those who want an under-sink system without a mineral stage |
Our Picks: Best Reverse Osmosis System With Uv Light reviews
1. APEC ROES-PHUV75: Best Under-Sink Pick With Mineral Enhancement
The ROES-PHUV75 combines a 75 GPD reverse osmosis system with UV treatment and a calcium mineral stage. The system is designed for installation under the sink and comes with a separate drinking-water faucet, so it can provide filtered water without taking up counter space.
Its added calcium stage is a useful distinction from the other APEC model in this list. The listing says it raises water pH and adds calcium for taste. That feature may appeal if you prefer mineral-enhanced water, though it also means this system has an extra stage to maintain.
APEC describes the system as reducing up to 99% of a range of impurities, including lead, fluoride, arsenic, chlorine, and heavy metals. The product title cites NSF/ANSI 372; that standard concerns lead-free materials, so it should not be treated as proof that the system is certified to remove every contaminant listed. As with any RO system, check the specific performance information and replacement-filter guidance for your water concerns.
Pros:
- Combines reverse osmosis, UV treatment, and a calcium mineral stage
- 75 GPD capacity for an under-sink system
- Includes a lead-free faucet and food-grade tubing, according to the listing
- Installation instructions and online videos are available
Cons:
- Needs under-sink space and a separate faucet installation
- The mineral stage adds another filter component to maintain
Verdict: Choose the ROES-PHUV75 if you want an under-sink RO and UV setup with calcium mineral enhancement; choose a simpler model if that added stage is not important to you.
2. Ecoviva Mate 3 UV: Best Countertop System for a No-Plumbing Setup
The Mate 3 UV is a countertop reverse osmosis purifier for people who cannot or do not want to connect a system to their plumbing. It is designed to be plugged in and used on a counter, making it a potential fit for rentals, apartments, offices, or other spaces where an under-sink installation is impractical.
The listing describes a 9-stage process with UV and mineral enhancement. Its 169-ounce tank and 44-ounce pitcher are intended to reduce how often you need to refill the unit. It also has an auto-sensing dispenser, filter-life alerts, and a self-cleaning cycle that flushes internal lines and filters. The stated pure-to-drain ratio is 3:1, but actual water use can depend on operating conditions.
This model takes up counter space and needs regular refilling, unlike an under-sink system connected to a water line. Its listed claims include up to 99.99% contaminant reduction and testing to NSF/ANSI 42, 53, and 58 standards. Check the manufacturer’s documentation to understand exactly what was tested and which claims apply to the system as sold.
Pros:
- No drilling or plumbing installation is required
- Large tank and a separate smart pitcher are included
- Filter reminders and auto-flush features help manage upkeep
- Includes UV treatment and mineral enhancement
Cons:
- Uses counter space and requires manual tank refills
- Has more built-in features to learn and maintain than a basic system
Verdict: The Mate 3 UV is a strong option if you want a feature-rich countertop RO system and cannot install an under-sink model.
3. iSpring RCC1UP: Best Higher-Capacity Under-Sink System
The iSpring RCC1UP is a 6-stage under-sink system rated at 100 GPD. It includes a booster pump and an 11-watt UV filter that, according to the listing, switches on and off with water flow. The pump and higher stated daily capacity make this model worth considering if you want an under-sink system with more output capacity than the 75 GPD APEC options.
The listing says the RO membrane filters down to 0.0001 micron and that the system reduces up to 99% of more than 1,000 contaminants, including PFAS, lead, fluoride, and arsenic. These are product claims, not a substitute for checking test data for the specific contaminants in your water. The system requires an electrical outlet for the UV component.
Quick-fit tubing and included installation parts are intended to make setup more approachable for a capable DIY installer. Still, an under-sink system needs room for its components, a suitable connection, and a plan for the separate drinking-water faucet. The listed replacement filters are model-specific, so confirm ongoing filter availability and replacement needs before buying.
Pros:
- 100 GPD rating and a built-in booster pump
- UV treatment is included in the 6-stage system
- Designed for DIY installation with quick-fit connections
- Listing identifies replacement filter set models
Cons:
- Requires an electrical outlet for the UV system
- Needs under-sink installation and space for the pump and filter components
Verdict: Consider the RCC1UP if you want a higher-capacity under-sink system with a booster pump, and have the room and power access its setup requires.
4. Purevua PR1-A: Best Portable Countertop Option With a Glass Pitcher
The Purevua PR1-A is a no-plumbing countertop RO purifier with six listed filtration stages, including a 0.0001-micron RO membrane and UV light. It comes with a high-borosilicate glass pitcher and is designed for kitchens, offices, RVs, and other settings where connecting a water line may not be convenient.
Its listed features include automatic filter flushing, UV activation, filter-life alerts, low-water reminders, and selectable dispensing volumes. It can produce up to 2 liters in a cycle, which may suit one person or a small household better than a system that requires frequent small batches. The product listing also says it is FCC certified, SGS tested, and meets NSF/ANSI/CAN 372. Those claims should be checked against the manufacturer’s documentation, especially if you are comparing contaminant-reduction performance.
Like other countertop RO units, it needs counter space and a supply of water in its source tank. Its electronic reminders and controls may be helpful, but they also make it a more feature-heavy choice than a basic under-sink system. The listing does not provide a daily production rating in gallons, so compare its batch size with your household’s actual drinking and cooking needs.
Pros:
- No plumbing or installation is required
- Includes a glass pitcher and produces up to 2 liters per cycle
- Offers automatic flushing, UV activation, and filter alerts
- Designed for use in several settings, including homes and RVs
Cons:
- Requires counter space and manual filling of the source tank
- Batch output may not suit households with high daily water demand
Verdict: Choose the PR1-A if portability, a glass pitcher, and automated reminders matter more to you than a direct connection to your plumbing.
5. APEC ROES-UV75: Best Straightforward Under-Sink Pick From APEC
The ROES-UV75 is a 6-stage, 75 GPD under-sink RO system with a UV stage. Unlike the ROES-PHUV75, it does not list a calcium mineral-enhancement stage. That makes it the simpler APEC option for shoppers who want UV treatment but do not specifically want remineralization.
APEC says the system is designed to reduce impurities such as chlorine, fluoride, arsenic, lead, nitrates, and heavy metals. The listing also describes the UV stage as targeting bacteria, viruses, cysts, and parasites. These claims do not tell you whether the system is suitable for every source-water issue, so check the product’s performance details and consider testing your water before choosing a treatment system.
The system includes a separate faucet and tubing and is designed for DIY installation with step-by-step instructions and online videos. It will take up space under the sink, and owners will need to keep up with filter maintenance. The listing does not state a booster pump or a higher capacity than 75 GPD, so the iSpring may be a better fit if you specifically want a pump or a higher stated daily output.
Pros:
- Combines under-sink reverse osmosis with UV treatment
- 75 GPD rating for everyday household drinking water needs
- Does not add a mineral stage if you prefer a more basic setup
- Includes a lead-free faucet and installation guidance, according to the listing
Cons:
- Requires under-sink space and a separate faucet installation
- Does not include the calcium mineral stage found on the ROES-PHUV75
Verdict: The ROES-UV75 is worth considering if you want an APEC under-sink RO system with UV and do not need the added mineral stage.
How to Choose a Reverse Osmosis System With UV Light
Start With Your Water Concerns
Reverse osmosis and UV treatment serve different purposes. An RO membrane is intended to reduce many dissolved substances, while UV light is used to treat microorganisms. Neither feature alone guarantees that a system addresses every concern in your water. If you use well water or have a specific contaminant concern, test the water and compare the results with the system’s documented performance claims before you buy.
Choose Under-Sink or Countertop Installation
An under-sink system can keep the main filtration unit out of sight and provide water through a separate faucet, but it needs cabinet space and some installation work. A countertop purifier avoids plumbing changes and may be more practical for renters, offices, or RV use. In exchange, it occupies counter space and needs its source tank refilled. Measure your available space and check installation requirements before choosing.
Match Capacity to Your Household
Under-sink models in this selection list daily production ratings of 75 or 100 GPD. A higher stated capacity may be useful when several people rely on the system, but actual output can depend on operating conditions. Countertop models describe tank, pitcher, or batch sizes instead. Consider how much water you use for drinking and cooking, and whether you are comfortable waiting for or refilling another batch.
Check Electrical and Plumbing Needs
UV treatment requires a power source, and the iSpring listing specifically says an electrical outlet is required. Confirm the outlet and installation requirements for any model you are considering. For under-sink systems, check the cabinet dimensions, water connections, faucet setup, and drain arrangement. Countertop models avoid plumbing installation but still need a suitable surface and nearby power if required by the manufacturer.
Understand What Each Certification Covers
Do not assume that a reference to an NSF standard proves every filtration claim. For example, NSF/ANSI 372 relates to lead-free materials, while other standards address different performance areas. Check whether a claim applies to the full system or a component, what contaminants were tested, and whether the testing organization’s documentation is available. Match those details to your water test results.
Plan for Filter Changes and Cleaning
RO systems need filter maintenance, and countertop models may also call for tank cleaning or flushing. Before buying, look for the recommended replacement schedule, filter model numbers, and replacement availability. Features such as filter-life reminders can make upkeep easier, but they do not replace following the manufacturer’s maintenance instructions.
Consider Mineral Enhancement and Taste
Some systems include a mineral stage, while others focus on RO and UV treatment without one. The APEC ROES-PHUV75 lists a calcium stage intended to add calcium and raise water pH. If that feature appeals to you, compare it with the simpler ROES-UV75. If you do not want mineral enhancement, a model without that stage may better match your preferences.
Frequently Asked Questions
What does UV light do in a reverse osmosis system?
UV light is intended to treat living microorganisms in water. Reverse osmosis is a separate filtration process aimed at reducing many dissolved substances. The two technologies can work together, but check the system’s documentation to see what its specific claims cover.
Does a reverse osmosis system with UV remove every contaminant?
No system should be assumed to remove every possible contaminant. Performance depends on the system, its condition, and the source water. Use a water test to identify your concerns, then compare those results with the manufacturer’s documented reduction claims.
Is an under-sink system better than a countertop system?
It depends on your space and installation needs. Under-sink systems keep the main unit out of view and connect to a dedicated faucet, but require plumbing work and cabinet space. Countertop models are easier to place without plumbing changes, but take up counter space and usually require manual refilling.
Do UV reverse osmosis systems need electricity?
UV treatment requires power, but the exact electrical setup varies by model. The iSpring listing explicitly says it requires an electrical outlet. Check the installation details for the specific system you are considering.
How often do I need to replace the filters?
Replacement timing varies by model, filter type, and water use. Follow the manufacturer’s schedule and any filter-life indicators, and confirm the correct replacement filter numbers before purchasing a system.
Can I use these systems with well water?
Some listings describe their systems as suitable for tap water and well water, but that does not mean every system is appropriate for every well. Test your water first, check the system’s documented limits, and confirm whether pretreatment is needed.
Which system is best for a renter?
The Ecoviva Mate 3 UV and Purevua PR1-A are countertop models listed as requiring no plumbing installation. They may be easier to use in a rental than an under-sink system, though both need counter space and manual water handling.
Final Recommendation
For an under-sink system with UV and a calcium mineral stage, the APEC ROES-PHUV75 is the most feature-complete pick in this group. If you need a no-plumbing setup, compare the Mate 3 UV’s larger listed tank and automated features with the PR1-A’s glass pitcher and batch-style output. For higher stated under-sink capacity, consider the iSpring RCC1UP, while the APEC ROES-UV75 suits shoppers who want UV without an added mineral stage. Before choosing any model, verify its installation needs, filter costs and schedule, and performance claims against your water concerns.