13 Best Replacement Under-Sink Water Filters

List Updated September 2020

Bestselling Replacement Under-Sink Water Filters in 2020


Filtrete Maximum Under Sink Water Filtration Filter, Reduces 99% Lead + Much More (3US-MAX-F01)

Filtrete Maximum Under Sink Water Filtration Filter, Reduces 99% Lead + Much More (3US-MAX-F01)
BESTSELLER NO. 1 in 2020
  • Maximum level filtration reduces 99% lead, 99% microbial cysts, 97% chlorine taste & odor, 0.5 microns of sand, sediment, rust & soil
  • Tested and certified by NSF international against NSF/ANSI standard 42 and 53 in 3US-MAX-F01 3us-max-s01 for the reduction of the claims specified on the performance data sheet
  • 1/4 turn change filter replacement lasts 6 months or 1500 gallons
  • Maintains high full water flow rates of 1.5 gallons per minute on your existing kitchen or bath faucet
  • Maximum, advanced and standard replacement filters are interchangeable with system
  • This product is intended to be used on a potable cold water supply only. Your water must be safe for consumption prior to installing and using the product

Aquasana AQ-5300R 3-Stage Under Sink Water Filter Replacement Cartridges

Aquasana AQ-5300R 3-Stage  Under Sink Water Filter Replacement Cartridges
BESTSELLER NO. 2 in 2020
  • Replacement filters for the AQ-5300 3-Stage Water Filter System to be used with the following systems: AQ-5300.55, AQ-5300.56, and AQ-5300.62
  • Use only genuine Aquasana replacements with your Aquasana system - untested replacements are not certified for performance capacity or contaminant removal
  • Replacements are an easy twist - no need to disconnect hoses or water lines. Simply twist off the filter housing, replace the filter, and twist back on. - no plumber necessary!
  • Reduces up to 99% of 77 contaminants including lead, mercury, asbestos, pesticides, pharmaceuticals, and more
  • Full system certified to NSF standards 42, 53, 401, and P473 - will not leach contaminants back into your water
  • Ultra-Delicious - Claryum filtration retains beneficial minerals, like calcium and potassium, for great tasting water

InSinkErator F-1000 Replacement Water Filter, 1-Pack of Under Sink Water Filter Cartridge for Water Filtration Kit

InSinkErator F-1000 Replacement Water Filter, 1-Pack of Under Sink Water Filter Cartridge for Water Filtration Kit
BESTSELLER NO. 3 in 2020
  • One replacement water filter for use with InSinkErator water filtration system
  • Replacement water filter reduces chlorine taste and order and other particulates down to 5 micron for clean, great-tasting water
  • Sanitary, quick-change filter cartridge and twist-and-lock design for easy filter changes
  • Recommended to replace water filter every 6 months for optimal performance
  • Compatible with InSinkErator F-1000S and F-2000S filtration system only; not for use with InSinkErator SST-FLTR stainless steel tank and filtration system

InSinkErator F-201R Replacement Water Filter Cartridges for Water Filtration Systems and Hot Water Dispensers, 2-Pack Under Sink Water Filters ,White

InSinkErator F-201R Replacement Water Filter Cartridges for Water Filtration Systems and Hot Water Dispensers, 2-Pack Under Sink Water Filters ,White
BESTSELLER NO. 4 in 2020
  • Replacement water filter reduces chlorine and odor for clean, great-tasting water
  • Sanitary, quick-change filter cartridge makes replacement fast and easy
  • Recommended filter cartridge replacement every 6 to 12 months for optimal performance filtering water
  • Includes 2 InSinkErator F-201R replacement water filter cartridges for instant hot water dispensers and F-201 Filtration System
  • NSF Standard 42 Listed Certification. NSF is a Public Health and Safety Organization that has strict standards for public health protection

3M Aqua-Pure Under Sink Replacement Water Filter – Model AP-DW80/90

3M Aqua-Pure Under Sink Replacement Water Filter – Model AP-DW80/90
BESTSELLER NO. 5 in 2020

Woder 10K-Gen3 Ultra High Capacity Direct Connect Water Filtration System - Under Sink Filter Premium Class I - Removes Chlorine, Lead, Chromium 6, Heavy Metals, Bad Tastes, Odors And Contaminants

Woder 10K-Gen3 Ultra High Capacity Direct Connect Water Filtration System - Under Sink Filter Premium Class I - Removes Chlorine, Lead, Chromium 6, Heavy Metals, Bad Tastes, Odors And Contaminants
BESTSELLER NO. 6 in 2020
  • LASTS FOR A MINIMUM OF 3 YEARS OR 10,000 GALLONS - Notes: For longest life, use with municipal treated cold water only, not well water. Do not use with salty or softened water. Connects for use only with cold water for drinking.
  • NO PLUMBING REQUIRED - Comes with 'Direct Connect' hoses that fit standard 3/8" water valves under US kitchen and bathroom sinks. The 3/8" Direct Connect Hose are made to install directly to the existing cold water valve and faucet stem under your sink. Replacement filters ASIN B0144MFN92.
  • PURE AND HEALTHY WATER - WITH NO MORE BOTTLES IN THE FRIDGE - Eliminates lead (99.9%), heavy metals, chlorine (99.9%), chromium 6, mercury, volatile organic compounds, carcinogens, and other contaminants, as well as turbidity, odors and bad tastes, so you and your family enjoy pure, healthy, spring-fresh water from the tap.
  • SELECTIVE FILTRATION - Woder filters have a unique technology that removes over 99.99% of contaminants while leaving in all essential minerals (Reverse osmosis filter out everything, including the minerals your body needs. As far as nutrition goes, experts consider it essentially dead water).
  • ENJOY TAP WATER AS PURE AND HEALTHY AS SPRING WATER - Woder filters are tested by independent laboratories to ANSI standards (American National Standards Institute), so you can have complete confidence in the quality of Woder-filtered water. Flow rate 2GPM @65 psig

General Electric GXULQR Kitchen or Bath Replacement Filter

General Electric GXULQR Kitchen or Bath Replacement Filter
BESTSELLER NO. 7 in 2020
  • Quick replace design
  • Elegant design and finish
  • The product is manufactured in China
  • The GE GXULQR water filter can be easily changed with the "Twist and Lock" mechanism
  • Filters cold water supply at faucet
  • he GE SmartWater GXULQR replacement water filter reduces cysts, chlorine taste & odor, turbidity and sediment
  • GE SmartWater GXULQR Water Filter is a replacement cartridge for use with: GE GXULQ Full Flow Water Filtration System
  • You should replace the GE GXULQR Filter every 2000 gallons or six months, whichever comes first. You may need to replace your GE water filter earlier if your water has a bad taste or odor

EcoPure Reverse Osmosis Under Sink Replacement Water Filter Set (ECOROF) | NSF Certified | Fits ECOP30 System | 6-Month Filter Life

EcoPure Reverse Osmosis Under Sink Replacement Water Filter Set (ECOROF) | NSF Certified | Fits ECOP30 System | 6-Month Filter Life
BESTSELLER NO. 8 in 2020
  • COMPATIBLE: Designed for use in the EcoPure ECOP30 Reverse Osmosis Undersink Water Filtration System and Kenmore Reverse Osmosis Systems 42-38156 and 42-38556
  • 6-MONTH FILTER LIFE: For best filtration results, filters should be replaced every six months, as recommended
  • PREMIUM PROTECTION: Certified by the National Sanitation Foundation (NSF) to reduce numerous contaminants, including sediment, chlorine taste & odor, cysts, lead, chemicals, and total-dissolved solids
  • EFFICIENT: Encapsulated filter design means water filter changes are quick and mess-free. No tools required. No need to shut off water supply. No touching dirty filters.
  • HELPFUL: Faucet light tells you when it's time to replace your filters. Still want filter-change reminders? Text 'EcoPure' to 444999 to sign up. Questions? Our lifetime technical support staff is available-call the EcoPure helpline at (800) 693-1138 or visit ecopure.com

GE FQSVF Drinking Water System Replacement Filter Set

GE FQSVF Drinking Water System Replacement Filter Set
BESTSELLER NO. 9 in 2020
  • Reduces chlorine, cysts, lead, select VOCs and other contaminants
  • Replacement for GXSV65R
  • Includes two "twist and lock" filters
  • Replace every 6 months or 160 gallons

Omnifilter T01-DS Omni TO1-DS Whole House Replacement Under Sink Water Filter Carbon Wrapped Cartridge (2-Pack) Taste & Odor TO1 DS T01 DS Series C (Twin Pack) Water Filter

Omnifilter T01-DS Omni TO1-DS Whole House Replacement Under Sink Water Filter Carbon Wrapped Cartridge (2-Pack) Taste & Odor TO1 DS T01 DS Series C (Twin Pack) Water Filter
BESTSELLER NO. 10 in 2020
  • 5 Micron Rating Reduces dirt, sediment, chlorine taste and odor
  • Flow Rate of 5.0 Gallons per minute Helps you maintain or significantly improve the quality of your water
  • Reduces the following contaminants, Sediment, Rust, Corrosion Chlorine Taste & Odor Filter Life 15,000 Gallons
  • Stored, Packed & Shipped by Amazon, Eligible for Free Shipping For Prime Customers
  • Genuine OEM Product, Amazon Customer Service 24 x 7, Track your delivery to your door

Aquasana AQ-5300+R 3-Stage Max Flow Under Sink Water Filter Replacement Cartriges

Aquasana AQ-5300+R 3-Stage Max Flow Under Sink Water Filter Replacement Cartriges
BESTSELLER NO. 11 in 2020
  • Replacement filters for the Aquasana 3-Stage Max Flow Water Filter System: AQ-5300+.55, AQ-5300+.56, and AQ-5300+.62
  • Use only genuine Aquasana replacements with your Aquasana system - untested replacements are not certified for performance capacity or contaminant removal
  • Replacements made easy - simply twist off the filter housing, replace the filter, and twist back on. No plumber needed
  • Reduces up to 99% of 77 contaminants including lead, mercury, asbestos, pesticides, pharmaceuticals, chlorine, and more
  • Instant access to healthy water - keeps you and your family hydrated all day. Now with 44% faster flow rate, your AQ-5300+ powers through 0.72 gallons per minute

WaterChef UR90 Under-Sink Filter Replacement Cartridge (for U9000 Filtration Systems)

WaterChef UR90 Under-Sink Filter Replacement Cartridge (for U9000 Filtration Systems)
BESTSELLER NO. 12 in 2020

Universal 10 inch Carbon Block Water Filter Cartridge - Replacement CTO Water Purifier Filter, Activated Carbon (NSF 42 Certified) (3)

Universal 10 inch Carbon Block Water Filter Cartridge - Replacement CTO Water Purifier Filter, Activated Carbon (NSF 42 Certified) (3)
BESTSELLER NO. 13 in 2020
  • UNSURPASSED PERFORMANCE - Effectively removes 97% of Chlorine, Class I Particulates, bad taste and odor, VOCs (Volatile Organic Compounds), and radon.
  • LONG LASTING WATER FILTER - Conveniently delivers up to 1000 gallons of healthy clean water with a filtration accuracy of 0.01~0.1um.
  • UNIVERSAL 10-INCH CARTRIDGE - Fits most under-sink and countertop water filtration systems
  • SAFE & CERTIFIED - Every replacement water filter cartridge is NSF 42 Certified
  • SATISFACTION GUARANTEE - Every unit is backed by a complete 30-day money back guarantee. If you don't love how easy it is to use and the water it produces, return it for a full, no questions asked refund.

Water Filtration Basics

Water filtration does everything from purifying drinking water to keeping ponds crystal clear. Filtration lets water through while trapping larger particles.

Home Filtration

Some property owners purchase filters that either go over the faucet or that filter water and let the water drip into a pitcher. With the pitcher, owners can store the pitcher in a refrigerator so that the water remains cold. Water filtration can save money over bottled water because consumers only need to pay for filter replacements periodically (which is generally much less expensive than buying bottled water every day).

History

People used to have to seek out water that was safe to drink. Sometimes, people boiled water to kill off harmful water born pathogens, but boiling still left behind harmful heavy metals. Also, as society became more industrialized, industrial plants released chemicals into water supplies, which became health hazards for society. Therefore, filtration systems have developed that can remove the pollutants from the water.

Sand Filters

Sand filters are the oldest and most common water filters and are used almost exclusively to treat waste water after waste passes through a sewer system. These filters only work well when water passes through the sand continually. The sand particles block larger particles, but let water through. These sand filters are a part of large wastewater treatment systems with computerized systems that monitor the water filtration process.

Activated Carbon

Activated carbon filters remove odors and tastes from water, making the water taste better. These kinds of filters can also remove pollutants. The carbon is very porous, allowing water to pass through. However, the carbon does not let larger particles pass through the filters. These filters mostly remove organic compounds and do not always remove metals.

UV Filtration

Some water filters use ultraviolet light to kill bacteria. This efficiently eliminates water-borne pathogens so that they do not spread disease. However, most water is already treated for pathogens and consumers do not have to worry about getting sick from water unless they're drinking untreated water, such as water from a well.

Distillation

The most effective way to purify water is to distill it. However, water distillation costs the most money because it requires a lot of energy to generate the heat necessary to boil the water. Also, the water does not always taste as good because the water lacks dissolved oxygen.

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