Cost-effective NSF certified UV water purifier
- This whole-house system is easy to maintain and provides a flow rate up to 7 GPM, slightly exceeding the average household rate of 6 GPM
- One of few UV systems certified to NSF Standard 55 Class B
- Not suitable for untreated well water or areas where water isn't already deemed potable and safe
NSF Standard 55 Class B
Country of originCanada
The Viqua SV8Q-PA Silver Series NSF Class B UV Water Purification System is a reliable, cost-effective, and chemical-free way to disinfect drinking water. This whole-house system is easy to maintain and provides a flow rate up to 7 GPM, slightly exceeding the average household rate of 6 GPM. It has a CSA and CE compliant power supply that is protected from damage and water intrusion, and is one of few UV systems certified to NSF Standard 55 Class B.
The Viqua UV lamp provides consistent and reliable ultraviolet output over the entire life of the lamp (9000 hours) to ensure continuous purification and when it is time to change the lamp this can be done without interrupting the water flow. The model is built with a durable stainless steel chamber to prolong life and eliminate ultraviolet light degradation, and the Silver ICE power supply visually displays the remaining lamp life and will go into alarm if the lamp fails.
This model replaces the Sterilight SCV-200 and SCV-320 systems which were not NSF certified. The Viqua SV8Q-PA measures 35 1/2″ x 2 1/2″ (90.4 cm x 6.4 cm) and works with 3/4″ MNPT connectors. It has a power consumption of 46W at 120VAC.
Most NSF certified UV systems are manufactured in Canada, with very few made in the US. Beware cheaper UV water systems sold in the US without certification as these are unlikely to have a UV light that offers any real efficacy against microbes. Even amongst those that are certified, very few are Class A certified, with most carrying the lesser, Class B, certification and costing anywhere from $400-$1000.
Class B devices are intended for use with water that is already deemed potable and safe. If you have a significant concern with microbial contaminants in your water, or are on untreated well water, however, you may want to avoid this product.
One of the cons for all UV system is that they need to be installed close to a power outlet and require regular maintenance, including cleaning the quartz sleeve every 6-12 months and replacing it every 2 years. This is because a coating will form on the quartz sleeve over time due to minerals in the water and this coating reduces the amount of UV light reaching the water, thereby reducing performance. If the sleeve cannot be cleaned, it must be replaced.
The UV lamp should be replaced every year, which can get a bit expensive over time. Another con is that your water needs to meet certain standards for the UV system to work, including having minimal particulate matter and UV transmittance of 75% or higher.
As with all UV water purifiers, the bulb is constantly on, meaning that water standing in the system can become very hot, as can the pipes surrounding the unit. As such, it is best to run the tap to purge hot water if no water has flowed for a few hours or more. It’s also a good idea to avoid using plastic pipes near these types of unit as the heat and light can degrade the pipe. Instead, use u-shaped stainless steel connectors that will prevent most of the light from reaching PVC or PEX piping.
Viqua SV8Q-PA vs. Viqua Pro10 vs. Pelican Water vs. Viqua E4-V
The Viqua SV8Q-PA is a Class B certified, effective but inexpensive option for a UV water purification system. If your water supply is already pretty good and you’re looking for extra assurance against microbial contamination, this one is a great option for the average sized household. Pelican Water offer a similar system to the Viqua SV8Q-A but it is harder to track down and more expensive. The Viqua E4-V is another good option if you’re looking for a faster flow rate at a good price with Class B certification. If your water is untreated, go for the Viqua Pro10 as this carries Class A certification. All in all, however, UV purifiers should be used as a backup or specialist purification for otherwise filtered and treated water.