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VIVA21 6-Stage Alkaline Remineralization Reverse Osmosis Filtration System | WQA Gold Seal Certified
VIVA21 6-Stage Alkaline Remineralization Reverse Osmosis Filtration System | WQA Gold Seal Certified
The VIVA21 6-Stage RO System with alkaline remineralization filter is designed to provide premium water quality at an unmatched value. It fits under your sink, installs in less than 30 minutes, and delivers peace of mind for your health and hydration — no matter your zip code.
- Removes up to 99% of contaminants - PFAS, heavy metals, chlorine, and more.
- Refreshing and healthy water superior to bottled water
- Mineral Boost – The natural mineral Alkaline stage delivers spring-like water with a balanced, healthy pH and multiple essential minerals.
- Comes with premium faucet and 4 gallon tank
- Built by a team with over 35 years of combined experience in water filtration industry
- WQA Gold Seal certified to meet the strict NSF 58 and NSF 372 standards
- Peace of mind - lifetime limited parts warranty and support
Package Includes
Package Includes
- All components required for standard installation
- Faucet
- Water tank
- Leak stop valve
Dimension & Specs
Dimension & Specs
- System Dimension: 16"W x 6"D x 18"H
- Tank Dimension: 11"W x 11"D x 15"H
- 50GPD at 60 psi
- Feed Water Pressure: 40 psi - 80 psi
- Feed Water Temperature: 40 - 100 Fahrenheit
Warranty
Warranty
Filter United proudly provides lifetime support for our VIVA21 reverse osmosis system.
The reverse osmosis system purchases include a 1-year manufacturer limited warranty, free from defects in material and workmanship under normal use and service.
Additionally, register your system here within 90 days to receive an extra 1-year warranty that activates after the 1-year manufacturer warranty expires. (Total 2 years)
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The Reverse Osmosis System For Everyone
Clean Water. Better Life.
Cleaner water means a better life. With VIVA21 RO system, your family enjoys safe, refreshing water for every meal, drink, and special moment.
Pure water brings peace of mind - No bottles, no doubts - just the comfort of knowing your family is protected with every sip.
Performance
Engineered to remove up to 99% of contaminants, including PFAS, heavy metals, chlorines, and more.
Certified
VIVA21 is a reverse osmosis system that is WQA Gold Seal certified to meet the strict NSF 58 and NSF 372 standards.
Experience
Design and built in the USA with a combination of 35 years of experience in water filtration.
Care
100% customer satisfaction guaranteed. Enjoy peace of mind with our lifetime support.
Frequently Asked Questions
Does this system filter Fluoride, Lead, Pharmaceuticals, and Arsenic?
Does this system filter Fluoride, Lead, Pharmaceuticals, and Arsenic?
Yes, it filters these contaminants as well as Cyanide, Phosphate, Pesticides, Sodium, Cadmium, Sulfates, among others, up to certain levels. Additional media may be required for high concentrations of these substances.
How often should filters be changed?
How often should filters be changed?
Sediment, and Carbon Block Filters should be replaced about every 12 months, while the RO Membrane and Inline Carbon Filter should be replaced every 2-3 years.
This recommended interval should be adjusted by your source water quality. Filters should be changed if noticed a change in taste.
What is the expected delivery after placing an order?
What is the expected delivery after placing an order?
Our lead time is 1 business day. The system packaged is shipped via either FedEx or UPS. Your expected delivery date should be 1 business day + the carrier shipping time depending on your location.
We are shipping from Southern California.
What payment methods do you accept?
What payment methods do you accept?
We accept a variety of payment methods to make your shopping experience convenient. These include credit cards (Visa, Mastercard, American Express), PayPal, and, in some regions, alternative payment methods such as Apple Pay or Google Pay. Rest assured, your payment information is secure and protected during the checkout process.
What types of contaminants can the VIVA21 RO system reduce?
What types of contaminants can the VIVA21 RO system reduce?
The VIVA21 uses a multi-stage RO membrane to reduce up to 99% of contaminants, including heavy metals, chlorine, fluoride, PFAS, nitrates, and dissolved solids. Its carbon filters help remove odors, chemicals, and volatile organic compounds (VOCs). Sediment filtration removes rust, sand, and particles. The result is clean, great-tasting, low TDS drinking water.
Is the VIVA21 system NSF/WQA certified?
Is the VIVA21 system NSF/WQA certified?
Yes. The VIVA21 Reverse Osmosis System is WQA Gold Seal certified, meeting the strict requirements of NSF/ANSI 58 for RO performance and NSF/ANSI 372 for lead-free materials.
These certifications ensure that the system has been independently tested for safety, structural integrity, and contaminant reduction. With the WQA Gold Seal, you can trust that VIVA21 delivers clean, reliable, and high-quality drinking water.
Do I need plumbing service to install my VIVA21 RO system?
Do I need plumbing service to install my VIVA21 RO system?
Not necessarily. You can install the VIVA21 system in about 30 minutes using basic tools. We provide a clear step-by-step guide and a complete installation video.
The system includes color-coded tubing, a dedicated faucet, and standard connectors designed for simple DIY setup. No specialized equipment is required.
What is the warranty for the VIVA21 system?
What is the warranty for the VIVA21 system?
VIVA21 comes with a 1 year manufacturer’s limited warranty covering defects in materials and workmanship under normal use. If you register your system within 90 days of purchase, you get an additional 1 year extended warranty for a total of 2 years warranty coverage.
Can VIVA21 filter hard water?
Can VIVA21 filter hard water?
The VIVA21 RO membrane can reduce many minerals found in hard water, significantly lowering TDS and improving taste. While it improves the drinking water quality, it does not function as a whole house water softener. For extremely hard water areas, using a pre-softener can extend the membrane’s lifespan. For regular household tap water, the system performs very effectively.
What is the annual maintenance cost of VIVA21?
What is the annual maintenance cost of VIVA21?
Annual maintenance typically includes replacing the sediment filter, carbon pre-filter, and post-carbon filter. Costs depend on usage and water quality, but most households spend approximately $40–80 per year. The RO membrane only needs replacement every 2 years, keeping long-term maintenance affordable. Autoship discounts can further lower yearly filter expenses.
Where is the VIVA21 system designed and assembled?
Where is the VIVA21 system designed and assembled?
The VIVA21 system is designed and assembled in California, reflecting our commitment to quality, precision, and trusted craftsmanship. We ensure every unit meets rigorous standards for performance and long-term reliability.


