See all of our over 30 Brands

Microfilter UV 4 Watt 1/4"QC .5 GPM Free Ship


Microfilter UV System 4 Watt 1/4"QC .5 GPM #OPP-UV4W

  • ✔️ This Microfilter Residential Ultraviolet System is a perfect addition to any Reverse Osmosis Drinking Water system.  

    ✔️ It reduces harmful contaminants such as cysts, bacteria, viruses and other biological pathogens from drinking water at a rate of 1/2 gallon per minute.

    ✔️ The chamber material is polypropylene with a stainless steel lining.    

    ✔️ Reduces: Giardia, cryptosporidium, coliforms, bacteria, viruses and other biological pathogens

    ✔️ End cap illuminates to give a visual lamp on confirmation 
    ✔️ Dimensions - 1.9" x 8.4"
    ✔️ Connections - 1/4" quick connect
    ✔️ Ballast  OPP-4W-BA-110 Not included - order here!✔️ UV Lamp: G4T5-4W
    ✔️ UV Output: 0.8W
    ✔️ Sterilizing Capacity: 0.5 gpm
    ✔️ Lamp Life - one year


      *Great News!  You can Mix & Match ALL Ultraviolet Lamps & Accessories to take Advantage of our Quantity Breaks Pricing!

      Product Number UVS OPP-UV4W

      Replacement UV Lamp here

      All products include FREE standard shipping in Canada!

      Customer Reviews

      Be the first to write a review
      About Microfilter
      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.

      Still Got Questions?

      Not to worry, we're here to help. Let us know what questions you have about Microfilter UV 4 Watt 1/4"QC .5 GPM Free Ship and one of our experts will get back to you shortly.