Discover more in our FAQ
Is tap water really unsafe?
Is tap water really unsafe?
While regulated, U.S. tap water can contain harmful contaminants such as lead, chlorine, fluoride, nitrates, and PFAS due to aging infrastructure and industrial pollution. Filtering your water is a smart step toward improving your family's wellness.
*Sources: EPA, EWG*
What are PFAS and why should I be concerned?
What are PFAS and why should I be concerned?
PFAS are "forever chemicals" that accumulate in the body and environment, linked to cancer, hormone disruption, and immune dysfunction. They are widely found in U.S. water supplies.
*Source: CDC*
Why choose Reverse Osmosis (RO) over carbon filters?
Why choose Reverse Osmosis (RO) over carbon filters?
RO removes up to 99% of total dissolved solids, heavy metals, PFAS, fluoride, and pharmaceuticals. Carbon filters improve taste and smell but don’t remove many harmful contaminants.
*Source: NSF.org*
Does RO remove healthy minerals?
Does RO remove healthy minerals?
Yes, RO filtration removes most minerals along with contaminants. While some systems reintroduce minerals, VIVA21 prioritizes purity. It’s important to remember that your body primarily gets minerals from a balanced diet, not from water.
*Sources: World Health Organization*
Collapsible tab heading
Collapsible tab heading
Fill in the text content of the collapsible item here. You can provide details and explanation for the question here.
What components come with the VIVA21 system?
What components come with the VIVA21 system?
Every VIVA21 system includes premium-quality parts to ensure a smooth install, reliable performance, and long-term safety:
- RO Faucet Kit: Chrome finish, leak-resistant washers, and no-fuss install hardware
- 2.5 Gallon Storage Tank: Pre-pressurized with stand and secure stem
- Leak Stop Valve: Automatic shut-off with replaceable sensing pads
- Feed Water Adapter Valve: Solid brass, fits both 3/8" & 1/2" lines
- Color-Coded Tubing: FDA-grade, kink-resistant, 5-ft sections for easy DIY
- Filter Housing + Wrench: Rugged, NSF-certified, hand-tightened to prevent leaks
- Drain Saddle Kit: No-splash design with secure clamping
- Quick-Connect Fittings + Lock Clips: Snap-in install with quality-inspected parts
These components reflect our commitment to completeness, quality, and future-proof support.
What does the VIVA21 system remove?
What does the VIVA21 system remove?
VIVA21 removes lead, chlorine, fluoride, PFAS, nitrates, arsenic, microplastics, and VOCs, delivering clean, great-tasting water you can trust.
How efficient is the VIVA21 system?
How efficient is the VIVA21 system?
Many traditional RO systems waste up to 3–4 gallons for every gallon of purified water. VIVA21 is designed with water-conscious engineering that reduces waste and maximizes performance—while delivering exceptional filtration at an accessible price.
Is VIVA21 certified?
Is VIVA21 certified?
Yes. VIVA21 meets or exceeds NSF/ANSI Standard 58 for RO system performance and is certified by the Water Quality Association (WQA). This certification involves a rigorous review process—including technical documentation, performance testing, material safety evaluations, and annual manufacturing audits—ensuring our system consistently delivers safe, reliable, and high-quality drinking water.
Is VIVA21 compatible with other RO systems?
Is VIVA21 compatible with other RO systems?
Yes. We offer customized compatible filters for most major traditional under-sink RO systems, including APEC, Express Water, and iSpring. Whether you're upgrading or maintaining your existing setup, our filters offer seamless performance and reliable quality.
Can I install it myself?
Can I install it myself?
Yes. VIVA21 is DIY-friendly and includes color-coded tubing, quick-connect fittings, and step-by-step instructions. Most customers install it in under an hour.
Will it fit under my sink?
Will it fit under my sink?
The compact design fits in most standard under-sink cabinets. You need a cold-water connection and drain access.
Can I connect it to my fridge or ice maker?
Can I connect it to my fridge or ice maker?
Yes! Our kit includes optional accessories to route filtered water to your fridge or ice maker.
Is it compatible with well water?
Is it compatible with well water?
Yes, as long as your well water meets basic standards. For water with high bacteria or iron, a UV or iron pre-filter is recommended.
How often do filters need replacement?
How often do filters need replacement?
- Pre/post filters: Every 6–12 months
- RO membrane: Every 24 months
How much does it cost to maintain?
How much does it cost to maintain?
Annual filter packs cost between $89–$109. Optional auto-ship subscriptions make maintenance easy. It’s cost-effective, convenient, and ensures your water stays clean and safe without missing a beat.
How will I know when to change filters?
How will I know when to change filters?
Our optional smart TDS monitor and usage tracker alerts you when it's time to replace filters.
Where do you ship?
Where do you ship?
We ship across the continental U.S. For Alaska, Hawaii, or Canada, contact our support team.
What is your return policy?
What is your return policy?
Try VIVA21 risk-free for 30 days. If you're not satisfied, return it for a full refund.
Is there a warranty?
Is there a warranty?
Yes. VIVA21 comes with a 12-month warranty covering manufacturing defects (excludes filters and damage from misuse).
Do you offer filter subscriptions?
Do you offer filter subscriptions?
Yes. Join the Filter United auto-ship program and receive filter replacements on time with a discount. It’s cost-effective, convenient, and ensures your water stays clean and safe without missing a beat.
Can I refer friends or family?
Can I refer friends or family?
Absolutely. Share your link and give friends $25 off. You earn $25 credit for every referral.
Do you have other ways to earn rewards and share your experience?
Do you have other ways to earn rewards and share your experience?
Yes! We’re building a creative, community-powered referral program:
- Share an installation video: If we feature it, you get **$100**
- Offer a tip or best practice that helps others: If we use it, you get **$100**
- Help someone else install a VIVA21 system (with proof of video): You earn **$100**
We want to celebrate and reward our customers who support others and help grow our clean water movement. More community challenges and bonuses are coming soon!