Best Single Tap UV Water Purifiers

Effective treatment: The Viqua VT1 uses powerful ultraviolet light to provide added protection that a reverse osmosis drinking water system can't provide. It eliminates up to 99.99% of harmful waterborne bacteria and viruses such as cryptosporidium, giardia, E. coli, legionella, norovirus, and hepatitis A virus † .

Easy to install: The system comes with clear and concise instructions for installation and can be easily installed by a plumber or homeowner with basic plumbing skills.

Low maintenance: The system requires minimal maintenance (with no tools). Simple annual replacement of the UV lamp and periodic cleaning of the quartz sleeve.

Perfect pairing: The Viqua VT1 works well as a companion to an under-sink RO drinking water system. It should be installed after the RO system on the line going to the RO faucet.

Energy-efficient: The system is designed to use minimal energy, which helps save on electricity costs over time. Learn more in our UV Buyer's Guide.

Space-saving design: The compact design of the Viqua VT1 water filter allows for easy installation in small spaces, making it an ideal option for homes and businesses with limited space.

Low flow rates: The Viqua VT1 is designed to provide adequate drinking water at flow rates of one gallon per minute. The system may not be suitable for use in households with high water usage.

Limited filtration capabilities: The Viqua VT1 does not filter out sediment, dirt, or other contaminants that may be present in the water supply. For this reason, we recommend pairing the VT1 UV system with your existing RO drinking water system. If you do not have an RO system, we recommend the VT4-DWS.

Needs electricity to operate: The system relies on electricity to operate, which means that it may not be suitable for use in areas where there is limited or unreliable power.

Requires authentic Viqua UV lamp: Damage arising from the use of non-genuine lamps poses a safety risk and is not covered by equipment warranty.

Higher Flow Rates: The VT4 offers flow rates of 3.5 gpm over the 1 gpm flow rate of the VT1.

Effective treatment: The Viqua VT4 uses UV-C light to destroy 99.99% of harmful microorganisms, including viruses and bacteria, such as cryptosporidium, giardia, E. coli, legionella, norovirus, and hepatitis A virus † , without adding any harsh chemicals to the water. Learn more about UV water treatment.

Easy installation: The system is easy to install and comes with all the necessary hardware for mounting and connecting to your water supply.

Low maintenance: The UV lamp can be changed without tools and only needs to be replaced once a year. The quartz sleeve should be cleaned every 12 months to ensure the system's optimal performance. Water conditions may require additional sleeve cleaning.

Energy-efficient: The system uses very little electricity making it a great choice for home use.

Outstanding warranty: This Viqua system come with a 10-year warranty on the UV chamber.

Initial cost: While maintenance costs are low on the VT4, the up-front cost of the system may be higher than other treatment methods due to the higher flow rates it offers.

Limited filtration: The Viqua VT4 UV treatment system is designed to treat water but does not remove sediment, fluoride, chlorine, pesticides or other impurities from the water. We recommend installing this system with a single-faucet RO water filter system for top-quality drinking water.

Requires electricity: The system needs a reliable source of electricity to function, which can be a concern in areas prone to power outages or if there is no electrical outlet available near the installation location.

Requires authentic Viqua UV lamp: Damage arising from the use of non-genuine lamps poses a safety risk and is not covered by equipment warranty.

Only suitable for certain water types: The Viqua VT4 UV system is most effective for treating clear water sources with low levels of turbidity. If the water has a high level of sediment or turbidity, it may not be as effective at treatment.