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The best selling countertop water filter picks sell because they are easy to start using and come from brands people already know.

We looked at 6 top sellers and explain what makes each popular and who should skip it.

Best Selling Countertop Water Filter - 2026 buying guide
Best Selling Countertop Water Filter: our top picks for 2026

Quick Answer: The Best Selling Countertop Water Filter

The PUR Plus Faucet-Mount Filter ranks among the best selling countertop water filter picks on Amazon. The ZeroWater 22-Cup Dispenser is a popular TDS pick, and the Big Berkey Gravity Water Filter is a long-time gravity favorite.

Best Selling Countertop Water Filter Comparison Table

ProductBest ForTypeKey FeatureBuy
PUR Plus Faucet-Mount Water Filtration System, Lead-Reducing FilterTop-Selling Faucet FilterFaucet-mount filterWQA certified for lead, 100 gal per filterCheck Price
ZeroWater 22-Cup Water Filter DispenserPopular TDS DispenserCountertop dispenser5-stage ion exchange, TDS meterCheck Price
Big Berkey 2.25 Gal Gravity Water Filter System with BB9-2 FiltersLong-Time Gravity FavoriteGravity countertop filter2.25 gal, stainless, 2 Black Berkey elementsCheck Price
Brita XL 27 Cup Water Pitcher Dispenser with Elite FilterPopular Big DispenserCountertop dispenser27 cups, Elite filter 120 galCheck Price
Bluevua RO100ROPOT Countertop Reverse Osmosis Water Filter SystemPopular Countertop ROCountertop reverse osmosis5 stages incl. remineralizationCheck Price
AquaTru Countertop Water Purification Unit, Certified NSF/ANSI StandardsPopular Certified ROCountertop reverse osmosisIAPMO-certified to NSF/ANSI 41, 53, 58, 401, P473Check Price

The 6 Best Selling Countertop Water Filters

Each pick below was compared on certifications, filter type, capacity, filter life and value.

Best Selling Countertop Water Filter – PUR Plus Faucet-Mount Water Filtration System, Lead-Reducing Filter
Top-Selling Faucet Filter

PUR Plus Faucet-Mount Water Filtration System, Lead-Reducing Filter

8.9/10 GR Score ⓘ

1PUR Plus is a faucet-mount filter that PUR says is WQA certified to reduce lead and NSF certified for microplastics and chlorine.

👍 Pros & Cons

Pros

  • WQA certified to reduce lead (maker claim)
  • Change light
  • Tool-free install

Cons

  • Not for pull-out faucets
📄 Detailed Review
  • Type: Faucet-mount filter
  • Includes: System
  • Key feature: WQA certified for lead, 100 gal per filter

Each filter lasts up to 100 gallons or about 3 months, with a change light.

It is our faucet-mount pick.

Check PUR Plus Faucet-Mount Filter Price on Amazon

ZeroWater 22-Cup Water Filter Dispenser
Popular TDS Dispenser

ZeroWater 22-Cup Water Filter Dispenser

8.5/10 GR Score ⓘ

2ZeroWater’s 22-cup dispenser uses a 5-stage ion exchange filter and includes a TDS meter.

👍 Pros & Cons

Pros

  • Removes virtually all TDS (maker claim)
  • IAPMO certified for lead and PFOA/PFOS
  • TDS meter included

Cons

  • Filters can wear out fast in high-TDS water
📄 Detailed Review
  • Type: Countertop dispenser
  • Includes: Dispenser + filter
  • Key feature: 5-stage ion exchange, TDS meter

ZeroWater says the filter is IAPMO certified to reduce PFOA/PFOS, lead, chromium and mercury.

It is our dispenser pick.

Check ZeroWater 22-Cup Dispenser Price on Amazon

Big Berkey 2.25 Gal Gravity Water Filter System with BB9-2 Filters
Long-Time Gravity Favorite

Big Berkey 2.25 Gal Gravity Water Filter System with BB9-2 Filters

8.7/10 GR Score ⓘ

3The Big Berkey is a 2.25-gallon stainless steel gravity system with two Black Berkey elements.

👍 Pros & Cons

Pros

  • No electricity or plumbing
  • 2.25-gallon capacity
  • Stainless steel

Cons

  • Elements must be primed
📄 Detailed Review
  • Type: Gravity countertop filter
  • Includes: System
  • Key feature: 2.25 gal, stainless, 2 Black Berkey elements

It needs no electricity or plumbing; you prime the elements, fill the top and gravity does the rest.

It is our gravity pick.

Check Big Berkey Gravity Water Filter Price on Amazon

Brita XL 27 Cup Water Pitcher Dispenser with Elite Filter
Popular Big Dispenser

Brita XL 27 Cup Water Pitcher Dispenser with Elite Filter

8.5/10 GR Score ⓘ

4Brita’s UltraMax dispenser holds 27 cups and includes an Elite filter.

👍 Pros & Cons

Pros

  • Big 27-cup tank
  • Elite filter lasts about 6 months
  • Spigot dispensing

Cons

  • Slow refills
📄 Detailed Review
  • Type: Countertop dispenser
  • Includes: Dispenser + filter
  • Key feature: 27 cups, Elite filter 120 gal

Brita rates the Elite filter for 120 gallons or about 6 months.

It is our big-family dispenser pick.

Check Brita UltraMax 27-Cup Dispenser Price on Amazon

Bluevua RO100ROPOT Countertop Reverse Osmosis Water Filter System
Popular Countertop RO

Bluevua RO100ROPOT Countertop Reverse Osmosis Water Filter System

8.6/10 GR Score ⓘ

5Bluevua’s RO100ROPOT is a plug-in countertop reverse osmosis system with five stages, including remineralization.

👍 Pros & Cons

Pros

  • No plumbing
  • Five stages
  • Filter life monitor

Cons

  • Needs power
📄 Detailed Review
  • Type: Countertop reverse osmosis
  • Includes: System + carafe
  • Key feature: 5 stages incl. remineralization

Bluevua says its filters last 12 to 24 months and a display shows filter life.

It is our countertop RO pick.

Check Bluevua RO100ROPOT Countertop RO Price on Amazon

AquaTru Countertop Water Purification Unit, Certified NSF/ANSI Standards
Popular Certified RO

AquaTru Countertop Water Purification Unit, Certified NSF/ANSI Standards

8.7/10 GR Score ⓘ

6AquaTru says its countertop RO unit is certified by IAPMO to NSF/ANSI standards 41, 53, 58, 401 and P473.

👍 Pros & Cons

Pros

  • Certified to NSF/ANSI 58 and more (maker claim)
  • No plumbing
  • Filters last 600–1,200 gal

Cons

  • Higher price class
📄 Detailed Review
  • Type: Countertop reverse osmosis
  • Includes: System
  • Key feature: IAPMO-certified to NSF/ANSI 41, 53, 58, 401, P473

It needs no plumbing, and AquaTru rates its filters for 600 to 1,200 gallons.

It is our certified RO pick.

Check AquaTru Countertop RO Purifier Price on Amazon

How We Chose the Best Selling Countertop Water Filter

To choose the best selling countertop water filter, we compared popular gravity, countertop reverse osmosis, faucet-mount, dispenser and pitcher filters on Amazon by certifications, stages, capacity and owner feedback.

CDC says to test your water, check NSF certifications and change filters as the maker recommends; see the CDC guide to choosing home water filters.

Product details in this guide are based on manufacturer specifications and verified owner feedback. Read more on our How We Test page.

Buying Guide: Why They Sell

Keep these points in mind before you buy.

Top sellers install in minutes, use widely available filters and come from well-known brands.

TOP SELLERS
Top Sellers Compared
From maker listings
FilterTypeStandout
PUR PlusFaucetLead claim
ZeroWater 22DispenserTDS meter
Big BerkeyGravity2.25 gal
Brita UltraMaxDispenser27 cups
BluevuaRONo plumbing
From maker listings.

Gravity, RO, faucet or pitcher

Gravity systems need no power, countertop reverse osmosis plugs in, faucet filters work on tap, and pitchers and dispensers are the simplest.

Test before you buy

CDC says to test your water or review your utility’s annual water quality report, then choose a filter for what is actually in it.

Before Buying a Top Seller

Check four things:

  • Your water test.
  • Certifications.
  • Filter cost per year.
  • Space needed.

Quick answers about the best selling countertop water filter.

BUY SMART
Check Before Buying
  1. Your water test
  2. Certifications
  3. Yearly filter cost
  4. Space needed
Popular is a good start.

Frequently Asked Questions

What is the best selling countertop water filter?

The best selling countertop water filter picks include PUR Plus, the ZeroWater 22-cup dispenser and the Big Berkey.

Tool-free install and certified lead reduction claims.

Yes, for TDS removal.

Is the top seller right for me?

Only if it targets what is in your water.

Are prices stable?

Prices change often; check before buying.

Final Verdict

Our final pick for the best selling countertop water filter is the PUR Plus Faucet-Mount Filter. Choose the ZeroWater 22-Cup Dispenser if you want a popular TDS pick, or the Big Berkey Gravity Water Filter as a long-time gravity favorite.

More water filter guides:

Product details are based on manufacturer specifications at the time of writing. Prices and availability change often, so check Amazon for the latest price.