Best Under Sink Water Filters That Remove PFAS (2026)

If you’re looking for the best under sink water filters that remove PFAS, you’re probably feeling two things at once:

• You want cleaner water.
• You don’t want to become a water-treatment expert just to get there.

Well, that’s fair, because this guide is written for normal people who just want to make a good decision and move on with their lives!

Before choosing an under-sink system, it’s worth confirming whether PFAS is actually present in your water, and at what level, with a home water testing kit for PFAS.

If you’ve tested your water already, and still deciding on filter types, we’ve covered whether faucet-mounted filters actually remove fluoride, with a broader look at the best water filters that really remove fluoride if you want quick context.

If PFAS is your main focus and you want an under-sink setup, you’re in the right place.

A quick way to choose:

If you don’t want to read the whole thing, start here.

• Get Waterdrop 10UA/10UB if you rent and don’t want to drill or modify anything.
• If own your place and want strong filtration without killing water pressure, go for Aquasana Claryum.
• You hate replacing filters and want something low-effort? CuZn UC-200 is the right choice.
• Pick Hydroviv if you want to be as sure as possible that PFAS is actually being filtered out.

Now let’s explain why those picks make sense.

How to choose an under sink water filter that removes PFAS

When people look for an under sink water filter that removes PFAS, they’re usually not chasing perfect water. They just want to know the filter is doing something real, not just making claims on a box. Some under-sink PFAS filters are backed by independent testing, others mostly by manufacturer data. Neither is automatically bad, but the more certainty you want, the more you’ll usually pay. That’s the basic tradeoff in this category.

Another thing most buyers don’t think about until after installation is water flow. Stronger filtration often means water comes out a little slower. For some kitchens, that’s fine. For others, especially with pull-down or spray faucets, it gets irritating fast. Simpler systems tend to keep water pressure closer to normal, while more complex ones usually clean more.. Sorry, there’s no free lunch here.

Finally, maintenance matters more than people admit. Some filters need replacing every six months, some last a year, and a few are designed to run for years with little attention. If you already know you’ll forget to change filters on time, a long-life system may actually protect you better than a more aggressive option you don’t keep up with. This is especially true for renters choosing renter-safe water filters they won’t have to constantly think about.

Now here are our recommendations for the best under sink water filters to remove PFAS.

Waterdrop 10UA/10UB: best renter-safe option

This is one of the simplest ways to get an under sink water filter that removes PFAS without touching your countertop.

It connects directly to your cold-water line, sits under the sink, and uses a single filter that’s easy to swap once a year.

✅ Good fit if:

• You rent.
• You want something affordable and low-stress.
• You don’t want to deal with plumbing changes.

⚠️ What to know before choosing this

• PFAS reduction is based more on manufacturer testing than strict third-party certification.
• It’s not as aggressive as premium systems.
• According to some buyers, hoses might feel stiff during installation.

Aquasana Claryum: best balance of performance and usability

Aquasana’s Claryum system is popular for a reason; it removes a wide range of contaminants, including PFAS, while keeping water flow fairly strong.

It does require installing a separate faucet, so it’s better for homeowners.

✅ Good fit if:

• You own your home.
• You want strong filtration without painfully slow water.
• You’re okay with filter changes every 6 months.

⚠️ What to know before choosing this

• Installation instructions are not very handy.
• More parts than simple inline filters.
• Takes up noticeable cabinet space.

CuZn UC-200: best low-maintenance option

The CuZn UC-200 is about simplicity. It installs inline, doesn’t require frequent filter changes, and is designed to last several years!

It reduces PFAS, lead, and chlorine, but it’s not the most aggressively tested system on the list.

✅ Good fit if:

• You want the “install it and forget it” experience.
• You care about stable water pressure.
• You don’t want recurring filter orders.

⚠️ What to know before choosing this

• Fewer formal certifications.
• Doesn’t remove everything.
• Flow gradually dropping toward the end of its lifespan.

Hydroviv: For people who want to go as far as possible

Hydroviv is built around one idea: different places have different water problems. Instead of a one-size-fits-all cartridge, they tailor the filter to your area.

In plain terms? It’s one of the most serious non-RO options for PFAS reduction, mainly because it’s more focused.

✅ Good fit if:

• You want strong reassurance PFAS is being reduced.
• You’re okay paying more for filters.
• You don’t mind replacing cartridges twice a year.

⚠️ What to know before choosing this

• Replacement filters aren’t cheap.
• Some people notice slower flow on certain faucets.
• It focuses on PFAS and heavy contaminants, not everything under the sun.

Common questions you might have:

Do these really remove PFAS?
Some do, some do it better than others. The difference is how much testing backs the claim.

Are under-sink PFAS filters safe for renters?
Yes, if they connect to the cold-water line and don’t require drilling.

Will my water pressure drop?
Sometimes! Systems that do more filtering often trade a bit of speed for it.

Are these all my options?
No, these work well in specific situations, but for various options overall, we compared the top 5 under-sink water filters that remove PFAS.

Do I need reverse osmosis?
Only if you want maximum removal of everything. Many people prefer under-sink filters because they’re simpler and keep minerals in the water.

Do these remove fluoride too?
Most do not. That’s a separate decision. Check out the best water filters that remove fluoride.