Clean Water. Clear Purpose.
At Filter United, we believe that clean water is more than a basic need — it’s the foundation of a healthier, better life. We are a team of industry veterans and wellness advocates with one mission: to deliver high-quality, effective, and accessible water filtration systems that fit modern homes and real lifestyles.
Born from decades of experience in water purification, we launched Filter United to do things differently — to be more responsive, more transparent, and more personal. We saw too many consumers forced to choose between overpriced systems, generic brands, or filters that simply didn’t deliver. So we built something better.
Filter United - VIVA21
Once upon a time, we got tired of overpaying for filters that felt like they belonged in a spaceship. So we started VIVA21 to make clean water feel human again - simple, affordable, and downright good for you. We build reverse osmosis systems that fit your life, not the other way around. Because drinking pure water should not feel like rocket science... it should feel like victory.
Together, we bring over 35 years of combined experience in water filtration and wellness innovation. We’ve led, built, and perfected products trusted by millions—now we’re bringing that expertise into something fresh, bold, and built entirely around you.
Engineered for Performance
To remove up to 99% of common contaminants including lead, chlorine, PFAS, and more.
Certified Quality
WQA Gold Seal certified to meet the strict NSF 58 and NSF 372 standards.
Powered by Water Pressure
Our systems work without electricity, built tough with lifetime limited parts warranty.
Compatible and Premium
Our pre-filters fit all standard traditional RO systems. Guaranteed 1 year of capacity.
Trusted by science
No matter where you live or what’s in your water (check your zip at EWG.org), RO remains the gold standard for drinking water.
Why "Filter United"?
What is Filter United
What is Filter United
We’re united by purpose. By quality. And most importantly — by our commitment to helping people live better through better water. Our name reflects our belief that clean water should connect us, not divide us by price, access, or complexity.
What We Do
What We Do
We offer reverse osmosis systems and replacement filter solutions. Our products are built tough and with trust. Enjoy peace of mind with our lifetime limited parts warranty and support.
What we offer
What we offer
We imagine a world where your glass of water isn’t just… water. It’s your daily reset button. It’s clarity in a cup. At VIVA21, we’re starting with water and dreaming big—from hydration to full on wellness essentials that make you feel unstoppable in your everyday life.
What Makes Us Different
What Makes Us Different
Whether you’re upgrading your water for health reasons, your family, or peace of mind, we’re here to help you make the right choice — with personalized lifetime support, honest information, and a commitment to your long-term wellness.
Frequently Asked Questions
Who is Filter United?
Who is Filter United?
Filter United is a U.S.-based water filtration company specializing in premium RO systems and replacement filters. Backed by a team with over 35 years of combined industry experience, we deliver safe, certified, high purity drinking water for every home.
Why Filter United?
Why Filter United?
Filter United focuses on delivering high quality home water filtration systems with reliable performance and long-term value. Our products are designed with easy installation, durable components, and industry-standard safety certifications. We prioritize transparency, customer support, and accessible replacement filters. Our goal is to make clean, safe drinking water simple for every household.
What does “VIVA21” mean?
What does “VIVA21” mean?
“Viva” represents life and vitality, “V” reflects victory, and “21” symbolizes longevity and the year the brand journey began. Together, VIVA21 expresses our commitment to pure water and everyday wellness for modern homes.
What is the brand value of Filter United?
What is the brand value of Filter United?
Filter United is built on the values of purity, simplicity, and trust. Through thoughtful design and modern engineering, we design filtration systems that support everyday wellness, bring safety to your home, and remain sustainable for the long term.
