Get better filtration without the clutter.
With our Under Sink Water Filter, enjoy customized, IAPMO-certified filtration straight from your faucet. Renter-friendly with no drilling required.
Shop NowHow does an under sink filter compare to a countertop filter?
| Hydroviv Under Sink Water Filter | Countertop water filter | |
|---|---|---|
| Customized to your water? | Yes; targets the exact contaminants in your water based on scientific data | No; designed to filter a generic blend of contaminants |
| Renter-friendly | ||
| IAPMO-certified to reduce PFAS, lead, arsenic, and more | Sometimes; many systems only target taste-impacting contaminants like chlorine | |
| Space-saving | ||
| Cost of ownership | $0.13/gallon | Varies; can range from $300-$500 in upfront costs, depending on brand |
| Maintenance | Refill filter needed every 6 months | Varies; refills often necessary every 3 months |
7,000+ 5-star reviews (and counting)
"Super easy to install. It’s so convenient to finally be able to use my tap instead of a countertop filtration system."
Martha M., verified buyer ★★★★★
Customized for the contaminants in your water.
Customized for the contaminants in your water.
Every Hydroviv Under Sink Water Filter is customized to target the contaminants in your water, including PFAS, lead, arsenic, and more. You’ll receive a system that filters a unique blend of what’s actually in your water—not what might be.
The Hydroviv Under Sink Water Filter is IAPMO-certified to NSF standards 53, 42, and 372. In an independent study conducted by Duke University, it outperformed many leading brands for PFAS filtration, including Berkey and Brita.
Easy to install and maintain.
Easy to install and maintain.
It takes 15 minutes (or less) to install your Under Water Sink Filter. You’ll only need to replace the filter twice per year, and with a subscription, you’ll save 25% on every single refill.
Built by a PhD scientist for families like yours.
Built by a PhD scientist for families like yours.
Hydroviv was founded by Dr. Eric Roy in 2015 to address staggeringly high levels of lead pollution during the Flint Water Crisis. We’re focused on measurable reductions, not marketing claims.
We’ve since expanded our product line to include filtration from tap to bath. We’re trusted by 100,000+ users across the country and have received 7,000+ 5-star reviews. The Hydroviv team remains focused on providing the most effective, science-backed filters on the market.
We're here to help.
Questions about our customization process or the unique contaminants in your water? Our support team is available at hello@hydroviv.com.
Frequently asked questions about countertop water filters vs. under sink water filters
For many households, yes. Countertop water filters are convenient, but most are designed to improve taste by reducing chlorine. Hydroviv’s Under Sink Water Filter provides stronger, IAPMO-certified protection against contaminants like PFAS, lead, and arsenic, without taking up counter space. You also get filtered water directly from your faucet, rather than through a separate device.
Some countertop filters reduce PFAS and lead, but many focus primarily on taste and odor. But Hydroviv Under Sink Water Filters are IAPMO-certified to reduce PFAS, lead, and more. They’re the only filters on the market customized to address what’s actually found in your local water. In an independent study conducted by Duke University, Hydroviv Under Sink Water Filters performed better than many leading brands, including Berkey and Brita.
Yes. You can install the Hydroviv Under Sink Water Filter without drilling or permanent modifications. Installation is fully reversible, making them safe for apartments, rentals, and shared spaces.
Installation takes 15 minutes or less and does not require a plumber or special tools. The filter connects directly to your existing cold-water line. Most customers find it just as easy as setting up a countertop water filter—without the clutter.