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Viqua 3.5 GPM 12 Volt UV System VT4/12 | Free Ship

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Viqua 3.5 GPM 12 Volt UV System VT4/12 

This is a Genuine Viqua 3.5 GPM Ultra Violet System. The VT4/12 system is a reliable, economical and chemical-free way to safeguard drinking water for your family at home or at the cottage. This is a point-of-use Ultraviolet system for flow rates up to 3.5 gpm (13 lpm). This System is a small, durable, easy to install it features an “on” indicator light. This unit is perfect for a single faucet, water fountain or low-flow application. This unit uses UV Lamp S330RL and UV Sleeve QS-330. Please see above videos for how to install and how to maintain this unit. 

    ✔️ Dimensions 17" X 2 1/2" or 43.6 cm X 6.5 cm
    ✔️ Connection Size 1/2" MNPT
    ✔️ Power Consumption 20W
    ✔️ 12 Volt system for use on boats, RV's and solar installations.
    ✔️ They use 20W of power and draw 0.4 amps
    ✔️ Please note this unit replaces Sterilight SC2.5 & SC4 Systems


    Product Code UVS VT4/12

    All products include FREE standard shipping in Canada!

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    Customer Reviews

    Based on 4 reviews
    Roger L. (Nestleton Station, CA)

    Great service product was exactly as described

    Ben B. (Nanaimo, CA)
    12V UV Water Safety in stock and shipped quickly

    12V gear is hard to find, especially water filtration. The local bricks and mortar water treatment people sell VIQUA, but I had to prod them to phone VIQUA and get a price for the 12V model, which was $100 more than the Water eStore price. Not to mention that it was in stock and arrived at my door quickly. The 12V VIQUA UV system is fast enough (3.5 gpm), that I can use it for whole house water off grid, (which I collect off my roof), so I won’t get sick from my dish or bath water because I used a drinking water only tap version.

    Brian M. (Victoria, CA)
    Love this product!

    Can’t believe it’s 12 volts! The video in the product gallery gives very detailed install directions. Be sure to watch them

    Allan D. (Pincourt, CA)
    Limitations and missing install instructions/diagram info

    First, let me say that your unit holds great promise but some serious concerns remain:

    Please correct the misleading installation diagram and instructions to include both in prose and figures the critically absent need for the lower drainage on the outlet line. Correct me if I am wrong, but only in the second page of instructions/diagram for disinfection is the drain mentioned or illustrated. I noticed this only after installation and the worker had to go. That drainage is obviously critical where a cottage is left vacant and unheated with below-zero temperatures already started last weekend in the Gatineau Hills north of Ottawa-Gatineau. I must now pay for further work to finalize the installation.

    While your telephone helpline fellow was great, informing me that the unit draws 19W, it might be useful for the actual implications of this kind of info to be spelled out in ads and unit profiles so that your customers (often amateur and uninformed like me) are aware of the place your unit will take in their overall 12V solar power supply systems.
    In our case, our supplier, Batteries Experts here on Île Perrot near Montreal made the calculation: Oops! The Viqua 3.5 GPM, running 24/7 will empty a half-full pair of new deep-cell batteries like ours in three days unless batteries are recharged. Put otherwise, our two full batteries operating your unit alone will fall to 50% charge in three partially cloudy days. Would have been good to understand.
    In actual practice last weekend, with partially overcast weather, our 6x4-foot solar panel started the weekend almost full and fell below 50% within 24 hours.
    Note that this was not solely because of the Viqua unit but because the other big draw is the motor drawing water from our new well – obvious to me now, but a bit late to draw this conclusion. Your units do not operate in isolation from such considerations. Please consider helping your clients out in advance to recognize not only the strengths but the limitations of your otherwise excellent equipment. You not we are the experts.
    Anything you can do in ads and instruction manual to stress these limitations would be very helpful to your clients who are not themselves electricians or serious students of the whole topic.
    PS While your online guy told me clearly that the Viqua should be left on 24/7 to ensure maximum unit life, under the above circumstances – real world – I have no choice but to run it only on an as-needed basis, being careful never to turn on taps without first lighting up the Viqua to ensure that no untreated water resides in the lines leading from Viqua to taps.
    I await a lab test on drinking water treated this way and am hopeful my solution works or I may have to bundle the unit up and return it. I certainly hope not.
    Note that the lab sample was taken only after first running the treated water through the line for several minutes.
    We shall see.

    I expect lab results shortly.
    Allan Davis


    About Viqua

    When you’re thinking of light commercial and residential Ultra Violet water systems, the VIQUA Sterilight brand will likely come to mind.  Viqua is one of 5 brands (including Aquafine, Salsnes Filter, Trojan UV, and Trojan Technologies) under the Trojan Technologies umbrella, who have succeeded in business since 1977 for decades.   According to their website, the Viqua Sterilight brand’s claim to fame is that they are “… one of the most recognized and respected brands … with more than 600,000 installations globally”.   Trojan Technologies started in London, Ontario, and through continuous innovation have added manufacturing operations in: Guelph, Ontario; Cortland, New York; and Salsnes, Norway.   Trojan Technologies has earned satisfied customers via almost 1,000 employees worldwide who provide timely support while working in a diverse and inclusive workplace. 

    Gary the Water Guy carries Viqua Sterilight products and UV systems for applications that are:  Single Tap; Whole Home; Professional; and Specialty.  We vet our suppliers and personally test all Viqua Sterilight Water Filtration products, installing them in our homes and monitoring their performance daily. They have a proven track record of not only building a high-performance product but also providing amazing after-sales support and service.   

    Viqua Sterilight Water Filtration products are easy to install & service, in most cases use widely available non-proprietary consumables and when possible, are Made in North America. We offer YouTube videos that support Viqua Sterilight Water Filtration products explaining how they work, how to install and service. We offer a 100% money back guarantee if you’re not satisfied with your investment in Viqua Sterilight water filtration products for your family.  

    See all from Viqua

    Shipping Policy

    We offer FREE Shipping anywhere in Canada. Once your order is placed, we process it the next business day and ship via ground transportation. In very remote locations, whenever the shipping costs become prohibitive we reserve the right to either cancel the order or ask that you contribute to the shipping costs, it's up to you. Your items may take anywhere from a few days up to a few weeks to arrive.

    If you have any special shipping requirements, like requiring a signature at time of delivery, please leave a message in the "Special instructions for seller" section while checking out. If you order multiple products they may not all arrive at the same time as we ship from multiple warehouses and each item will be shipped directly to you. If no one is home when your order is delivered it will be left for you but we cannot assume responsibility for your order once it has been dropped off.

    If you have any questions please contact us at

    Thank you for your order, we appreciate your business!


    Excluded Items

    We do not offer refunds or returns on items built to order including Aclarus Ozone systems, Reverse Osmosis systems larger than 500 gpd or water softeners/iron filters over 1 cubic foot. 


    Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately, we can’t offer you a refund or exchange.

    To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

    To complete your return, we require a receipt or proof of purchase.

    Please do not send your purchase back to the manufacturer.


    Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

    If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

    Late or missing refunds

    • If you haven’t received a refund yet, first check your bank account again.
    • Then contact your credit card company, it may take some time before your refund is officially posted.
    • Next contact your bank. There is often some processing time before a refund is posted.
    • If you’ve done all of this and you still have not received your refund yet, please contact us at

    Sale items

    Only regular priced items may be refunded, unfortunately, sale items cannot be refunded.


    We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at and send your item to: The Water Store 1004 King Street Midland Ontario CA L4R0B8.


    To return your product, you should mail your product to:

    The Water Store
    1004 King Street
    Midland Ontario CA L4R0B8

    You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

    Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

    If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

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