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Description
Tired of slow reverse osmosis systems, wasted under-sink space, and concerns about what’s really in your water? The iSpring RO500AK-UV Tankless Reverse Osmosis Water Filtration System delivers next-generation under sink reverse osmosis filtration with fast water flow, advanced contaminant reduction, built-in UV sterilization, and alkaline remineralization for cleaner, safer, better-tasting water every day.
Designed for modern homes, offices, coffee stations, and high-demand households, this 500 GPD tankless reverse osmosis system delivers purified water at up to 0.4 gallons per minute, filling bottles, glasses, pitchers, and cooking pots significantly faster than traditional RO systems without long wait times.
Its advanced 4-stage reverse osmosis filtration system helps reduce up to 99% of over 1,000 contaminants including PFAS, lead, chlorine, fluoride, arsenic, sodium, asbestos, and other unwanted impurities that can impact water quality, taste, and safety. Integrated LED UV sterilization technology adds an extra layer of protection by helping reduce additional contaminants for greater peace of mind.
Unlike standard RO systems, the built-in alkaline remineralization stage helps restore beneficial minerals and improve water taste for a smoother, more refreshing drinking experience. The sleek tankless under sink design also frees up valuable cabinet space while helping reduce secondary contamination risks associated with traditional storage tanks.
Engineered for efficiency, the 2:1 pure-to-drain ratio helps reduce water waste compared to conventional reverse osmosis systems, while the intelligent automatic membrane self-cleaning mode helps extend filter life and maintain consistent long-term performance with less maintenance.
Why People Love It • Advanced 4-stage reverse osmosis filtration — helps reduce up to 99% of contaminants for cleaner, safer drinking water • PFAS, lead, chlorine, fluoride, and arsenic reduction — supports healthier everyday hydration • Integrated LED UV sterilization — adds an extra layer of protection for cleaner water quality • 500 GPD fast-flow performance — delivers purified water up to 0.4 GPM with less waiting • Alkaline remineralization technology — restores beneficial minerals and improves taste • Efficient 2:1 pure-to-drain ratio — helps reduce wastewater compared to conventional RO systems • Automatic membrane self-cleaning — helps maintain filtration performance and extend system lifespan • Tankless under sink design — saves cabinet space and reduces clutter • Easy twist-and-lock filter replacement — simplified maintenance without shutting off the water supply • Ideal for homes, offices, coffee stations, and high-demand households — fast purified water where performance matters
iSpring One-Year Limited Warranty
For any iSpring water filtration system (the “product”), iSpring Water Systems, LLC (iSpring) warrants the product against defects in materials and workmanship for a period of one year from the date of purchase (the “Limited Warranty”). Please keep your receipt for proof of purchase.
The Limited Warranty is only provided to end-users and only applies to products purchased directly from an authorized iSpring dealer or reseller. End-user's sole and exclusive remedy for any breach of the Limited Warranty shall be iSpring’s repair or replacement of the defective product, at iSpring's option and expense. The Limited Warranty shall apply to replacement or repaired products for the unexpired portion of the original warranty or 6 months, whichever is greater. iSpring has no liability for any defect which results from an accident or the improper installation, maintenance, repair or use of the product. EXCEPT FOR THE LIMITED WARRANTY, ISPRING EXPRESSLY DISCLAIMS ANY AND ALL REPRESENTATIONS AND WARRANTIES, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTIES OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND ANY OTHER OBLIGATION OR LIABILITY TO END-USER, ANY DISTRIBUTOR OR ANY OTHER PARTY WITH RESPECT TO THE PRODUCTS.
If you believe your product is defective, contact us for instructions on where to send it or bring it for repair. iSpring will bear the cost of any defective product sent back. The Limited Warranty does not cover the cost of installation or reinstallation of any product.
Shipping & Returns
Orders Processing: Our chosen couriers, including USPS, UPS, and FedEx, consistently facilitate the delivery of your items from our warehouse. Please note that processing times may vary depending on the brand. All orders are processed and shipped within 1 - 5 business days.
Order Confirmation: As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your card for the purchase.
30 Day Returns: If your order arrives damaged, we will exchange you a replacement. For more details, visit our Refund Policy Page.
Why do some brands cost more than others?
Pricing varies based on number of filtration stages, system capacity (GPM / output), technology (RO, UV, hydrogen, etc.), build quality and components. Most systems range widely from a few hundred dollars to several thousand depending on features and performance. Higher-end systems typically offer better purification, longer lifespan, and more advanced features
The Water Wellness Works Difference
Why buy from an authorized dealer?
The Water Wellness Works Difference
Water Wellness Works (AD)
Online Marketplaces (Outside Sellers)
Authorized dealer for trusted water wellness brands
Yes
Often unverified
Manufacturer warranty honored
Yes
Frequently limited or void through unauthorized sellers
Brand-new, factory-sealed products
Yes
Open-box, returned, or unknown-condition items may occur
Help choosing the right system for your home or business
Yes
No personalized water-solution guidance
Direct Water Wellness Works support
Chat, phone, and email
Routed through a third-party seller
Reliable post-purchase support path
Yes
Depends on the seller
Trusted source for filtration, hydration, and wellness systems
Yes
Varies by marketplace listing
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