Best Reviews of Aquasana AQ-4000 Countertop Water Filter

Aquasana AQ-4000 Countertop Water FilterBest Reviews of Aquasana AQ-4000 Countertop Water Filter

With so many available today, it is good to have a brand you can trust. The Aquasana AQ-4000 Countertop Water Filter is certainly that and will be a excellent purchase. For this great price, the Aquasana AQ-4000 Countertop Water Filter comes highly recommended and is a regular choice with most people.


  • Voted Consumers Digest Best Buy 6 years in a row!
  • Removes chlorine, lead, cysts, volatile organic compounds (pesticides) and gasoline additives
  • Leaves in beneficial minerals for superior health benefits compared to reverse osmosis systems
  • Easy install means you'll be enjoying delicious water in minutes
  • Includes pre-installed filter cartridges, diverter and adapters

Product Description

Aquasana's patented dual cartridge drinking water filter installs in seconds on standard kitchen faucets and provides up to 30 gallons an hour of ultra-filtered, high-quality water for drinking, cooking and preparing beverages. Includes filter housing, chrome faucet diverter, twin filter cartridge set (lasts 6 months/filters 500 gallons), and easy-to-follow instructions.



Replace the filter cartridges every six months with Aquasana AQ-4025 dual cartridge replacement filters. Always have fresh filters right when you need them, receive a 20% discount on replacements and extend your system warranty with Aquasana's Water For Life auto-ship cartridge program.



Contaminant Reduction:

99.3% of Chlorine taste and odor

98.7% of Lead @ 6.5pH

99.0% of Lead @ 8.5pH

99.987% of Cryptosporidium (cyst)

98.46% of Particulate, Class I particles 0.5 to <1µm

99.6% of VOCs(by surrogate testing using chloroform)

>95% of Trihalomethanes*(THMs)

*V.O.C.s tested by chloroform surrogate as specified in NSF Standard 53.


For an expanded list of contaminants reduced please see the Aquasana AQ-4000 performance sheet. Performance testing was perfomed by Underwriters Laboratories to NSF Standards 42 & 53. While testing was performed under standard laboratory conditions, actual peformance may vary. California Department of Health Certificate #06-1792