Top 10 Best zen water filter system in 2026

Last Updated - 6/18/2026

🏆Best Choice

iSpring

iSpring RCC7AK, NSF Certified, 75 GPD, Alkaline 6-Stage Reverse Osmosis System, pH+ Remineralization RO Water Filter System Under Sink, Patented Top-Mounted Faucet Design for Easy Installation

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•PATENTED DESIGN – The top-mounted fastener allows for easy countertop installation entirely from above, eliminating the hassle of tightening the nut from underneath the sink.
•MINERAL BOOST – The patent-pending natural mineral AK stage delivers spring water with a balanced, healthy pH and multiple essential minerals.
•SEE WHAT’S CAUGHT – The transparent first-stage filter housing makes it easy to monitor contaminant buildup, ensuring timely filter changes.
•NSF 58 CERTIFIED RO SYSTEM – Unlike other brands that lack NSF certification or full system certification, our RCC7AK is certified to NSF/ANSI 58 and 372 standards for the entire water filtration system.
•EFFECTIVE FILTRATION – Reduces TDS (93-98%), PFAS (96-99%), Chlorine (95-99%), Asbestos (>99.7%), Barium (>98.4%), Cadmium (>98.8%), Chromium (>99.2%), Copper (>97.8%), Fluoride (>97.4%), Lead (>98.9%), Selenium (>99.0%), and over 1,000 other contaminants.
•EASY INSTALLATION – The RO water system features a DIY-friendly design with quick-fitting connections, a clear manual, and step-by-step videos for a hassle-free setup.
•TRUSTWORTHY SUPPORT – America’s favorite RO brand, backed by lifetime technical support in Atlanta, GA, ensuring expert assistance whenever you need it.
•CONVENIENT REPLACEMENT FILTERS - Easy access to replacement filter sets: F4AK (6-Month), F9K (1-Year), F19K75 (2-Year), and F28K75 (3-Year).

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$234.99

$279.00

-16%

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ZeroWater

ZeroWater 52-Cup Ready-Read 5-Stage Water Filter Pitcher Dispenser with 5-Stage 0 TDS Zero Water Filter – IAPMO Certified to Reduce Metals, Chlorine, Lead, Chromium, and Forever Chemicals PFOA/PFOS

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Real-Time TDS: The 52 Cup 5-Stage Ready-Read Water Filter Dispenser has an integrated TDS Meter to instantly check the levels of dissolved solids before dispensing or pouring water – always know when it is time to change your filter!
•Advanced Filtration: Our 5-Stage Ion Exchange Filter removes virtually all dissolved solids (TDS) for the purest tasting water; Total Dissolved Solids are organic and inorganic materials, such as metals, minerals, salts, and ions dissolved in water.
•IAPMO Certified & BPA-Free: Our 5-Stage filter is IAPMO Certified to reduce PFOA/PFOS, lead, chromium, and mercury. All ZeroWater products are made from BPA-Free plastic.
•Your New Water Filter System: Your purchase includes a 52 Cup water filter dispenser, 5-Stage Ion Exchange Water Filter, and an integrated TDS meter that read TDS levels in real-time. Compatible with ZeroWater & ZeroWater systems and filters.
•Less Plastic, More Hydration: You can save up to 110 single-use plastic bottles per filter or up to 660 bottles a year while enjoying the purest tasting water with your Zero Water Filter System.

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$46.99

$64.99

-28%

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iSpring

iSpring WGB21B 2-Stage Whole House Water Filtration System, with 10" x 4.5" Sediment CTO(Chlorine, Taste, and Odor) Filter, 1" Inlet/Outlet

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•[Two-Stage Effective Filtration] The whole house water filter has 1st-Stage premium 5-micron polypropylene sediment filter (FP15B) captures dirt, sand, silt, dust, rust, and scale particles, using high quality coconut shell carbon and highly compact fabrication tech, 2nd-stage CTO filter(FC15B) knocks out cloudiness as well as bad tastes and odors, removes over 90% of chlorine, and is highly effective on VOCs like pesticides, herbicides, and industrial solvents.
•[Superb Filtration Capacity] 10"x4. 5" replaceable whole house water filters can provide up to a full year of clean water(up to 50, 000 gallons) for a family of four. 1-inch inlet and outlet ports allow fast water flow with less pressure loss. Fine PP sediment filter and premium quality CTO filter not only bring clean and fresh water to every faucet in your house, but also help prolong the lives of your water-using appliances and protect plumbing from sediment and scale buildup.
•[Easy Installation and Filter Change] The system comes pre-assembled onto the mounting bracket for a streamlined, DIY installation. Filter wrench included to make routine filter changes easy and quick. A pressure release valve allows for the release of built-up pressure when changing filters. Refer to our manual and/or YouTube videos to Install this point-of-entry (POE) filtration system at the main water supply to get clean and healthy water for the entire family.
•[Retain Valuable Minerals] Unlike an RO system, this system will NOT reduce Total Dissolved Solids (TDS), and instead keeps healthy minerals in your water. If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis (RO) systems.
•[Peace-of Mind Customer Service] Backed by a 30-day money-back guarantee, 1-year warranty, and extended manufacturer warranty upon warranty registration at iSpring. Lifetime CS and tech support from Atlanta, GA USA. We stand behind our products. If you encounter any problems with any of our products, please reach out to us immediately. We are happy to help!

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$150.00

$182.99

-18%

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Purewell

Purewell 3-Stage 0.01μm Ultra-Filtration Gravity Water Filter System, NSF/ANSI 42&372 Certification, 304 Stainless Steel Countertop System with 2 Filters and Stand, Reduce 99% Chlorine, 2.25G, PW-OB

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•3-Stage Filtration - The Purewell gravity water filter system adopts a composite filter technology, can reduce most contaminants. The black carbon filter has passed authoritative NSF/ANSI 42 certification, it employs a 0.01μm hollow fiber UF membrane, a silver ion membrane and an activated carbon block to reduce chlorine and intercept rust, sediment, organic matter and heavy metals, etc. This water filter system has also passed authoritative NSF/ANSI 372 certification.
•Smaller Filter Pore Size - The filter pore size of Purewell gravity water filter is 0.01 microns so that it can filter out 99.99% tiny materials from the water while other brands' filter pore size is only 0.2 microns. The smaller filter pore size, the higher filtering accuracy. What's more, Purewell water filter system can maintain the optimal flow rate (4 gallon/hour) while the filter pore size is smaller.
•Complete Accessory Set: The system not only provides safe water but also adds a touch of style to your home with its 304 food-grade stainless-steel housing. This ensures a sturdy and long-lasting structure. The 304 stainless steel spigot that comes with the system fits the chamber perfectly, preventing any leaks. Additionally, a non-slip stand is included to enhance the user experience. These accessories are included in the package, you don't have to spend extra money on additional accessories.
•Energy Saving - Relying on the principle of gravity filtration, no electricity is needed. The gravity water filter system is divided into upper and lower chambers. The upper chamber can be filled with unfiltered tap water, the lower chamber will get clean water after filtered. Because it does not require electricity, it can be used indoors and outdoors. NOTICE: When the bottom chamber is full of filtered water, please do not add tap water to the top chamber or it will leak out.
•Long Lifespan and Replaceable - The two carbon filters (black) can provide up to 6000 gallons drinking water, the service life of a single filter element is 3000 gallons (According to different water quality, the lifespan of the filter elements would be a little different). But for optimum performance, the filter elements should be replaced every 6 months. NOTICE: The filter element DOES NOT lower TDS value.

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$138.99

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Invigorated Water

pH Recharge Glass Alkaline Water Filter Dispenser - Countertop Water Filter System - Purifier Pitcher for Home and Office - High pH Pure Drinking Water Filtration - 8.5L/2.25 Gal

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•HIGH PH ALKALINE WATER DISPENSER: Our Alkaline Water Filter Dispenser is equipped with a pH001 filter. Each alkaline water filter increases pH up to pH9 and removes unwanted particles and heavy metals while keeping in minerals.
•SLEEK, MODERN DESIGN: An innovative and unique design with a glass and wooden structure makes our water purifier an aesthetic addition to your kitchen counter.
•LONG-LASTING FILTER CAPACITY: Each filter water pitcher can filter up to 8.5L of water at a time, ideal for home and office use. Its filter filters up to 1000L/264 gal of water in total.
•A SUSTAINABLE SOLUTION: Cuts down on your plastic bottled water usage and helps you save the planet! Also made from BPA-free, food-grade materials.
•EVERYTHING INVIGORATED: Combine our counter water filter dispenser with our other products such as the pH Vitality Alkaline Water Filter Pitcher. All of our products come with a money-back guarantee.

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$130.00

$140.00

-7%

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ZENWATER

ZENWATER Genuine 5-Stage Mineral Cartridge Filter Replacement - Exclusively for Zen Water Countertop Gravity Filtration System - Clean and Mineral-Rich Hydration

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Enhances Water Quality - After passing through the ceramic water filter, watch as nasty tap water turns alkaline in a few hours via the 5-stage filter with natural zeolite, far infrared balls, silica sand, mineral sand, and activated carbon
•Your Economical Choice - This 5-stage filter boosts the water’s health benefits. This home water filter system mineralizes at least 500 gallons of water, hence making Zen Water Purifier the practical option
•Fast and Easy Replacement - Replacing your Zen Water system’s stone filter cartridge is easy compared to any under sink water filter. Just take off the drinking water filter system’s bottom tank and replace the old cartridge with the new one
•Made Only for Zen Water - Your Zen Water system is not complete without the 5-stage mineral water filter. This original filter component fits Zen Water’s portable water filter systems, including the 4-gallon dispenser
•Traps Impurities - The first stage of Zen Water filter system’s 8-step method won’t be possible without this 5 stage water filter. This efficient filter traps even the tiniest pieces of gunk and dirt, leaving you with clean, drinkable water

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$35.90

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Ronaqua

5-Stage Replacement Mineral Filter Cartridge for Countertop & Water Coolers. 5 layers of filtration & mineralization. Removes granular impurities to provide a brilliant sparkle in water (Set of 2)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•💎 EFFECTIVELY ELIMINATE bad odor, chlorine and hundreds of man-made chemical such as pesticides, solvents and VOCs found in tap water by Activated carbon. The carbon is impregnated with colloidal silver to disinfect in the water filter system. It is treated with oxygen to open up millions of tiny pores between the carbon atoms and is activated with a positive charge to attract negatively charged water contaminants
•💎 REPLENISH DRINKING WATER with essential minerals and bio-energy properties while remove toxins and impurities by Ionic-Exchange Resin which softens hard water by replacing magnesium and calcium ions found in hard water with sodium ions. It purifies the water by removing toxin and heavy metal ions and replacing with more innocuous ions such as sodium and potassium
•💎 PROMOTE GROWTH AND HEALTH OF LIVING CELLS by Infrared Minerals. It ionizes and helps activate water molecules in human cells and blood. Far infrared is also known to increase the processing enzyme activity in our digestive tract, as well as boost metabolism
•💎 NEUTRALIZE ACIDIC ELEMENTS by Silica Sand to create an optimal pH balance in the human body. It has superb absorbent qualities to remove granular impurities and suspended solids to provide a brilliant sparkle in water. It also helps in maintaining healthy nails and radiant skin
•💎 LIFE OF FILTER is 500 gallons or 6 months, whichever comes first. GUARANTEED TO FIT across all Well Known Water Filtration Systems and WELL-MATCHED COMPARABLE FILTERS

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$20.99

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ZENWATER

ZENWATER 6-Gallon Countertop Gravity Water Filter System - Portable Alkaline Filtration System - Enjoy Clean and Mineral-Rich Hydration at Home, Office, or Travel

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Transform tap water into clean, healthy, alkaline mineral water; o-rings and the wing nut are attached to the stem of the ceramic filter
•Removes bacteria, contaminants, chlorine, impurities and other man-made chemicals and adds micro-nutrients and bio-energy properties
•Transform tap water into clean, healthy, alkaline mineral water
•BPA-Free; No electricity or plumbing required; Easy assembly; Convenient, versatile & affordable, the o-rings and wing nut are attached onto the stem of the ceramic filter

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$149.95

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Ronaqua

Alkaline Mineral Stone Case Replacement for Water Filter Systems WELL-MATCHED with MS-1, TWS-01 and AQ-107 Filters

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•💎 HELPS INCREASE PH LEVEL producing healthy alkaline water to provide great benefits for every user – including boosting pH, detoxification, increasing hydration, improving metabolism, reducing blood pressure, increasing bone density, regulating digestion, and much more
•💎 POINT OF USE Mineral Stones are INFUSED with minerals the filtered and purified water while it is stored in the bottom tank for consumption and PRESERVES purity and freshness for your stored water
•💎 LIFE OF FILTER is 1000 gallons or 1 year, whichever comes first. To achieve better results before using them is recommended to follow this four steps: 1. Open plastic case; 2. Wash out stones; 3. Boil the stones for the 10 minutes; 4. Put the stones in the case and install case on the bottom of the lower tank
•💎 HELPS to remove heavy metals from your body. Enhances overall health and boosts immunity and to sterilize and prevent secondary breeding of other germs from stored water
•💎 GUARANTEED TO FIT across all Well Known Water Filtration Systems and WELL-MATCHED FOLLOWING FILTERS: MS-1, Purenex MS-1, None TWS-01, AQUASPREE AQ-107

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$13.99

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Little Luxury

Water Stream by Little Luxury Crystal Clear 4-Gallon Countertop Gravity Water Filter System - Portable Alkaline Filtration System - Enjoy Clean and Mineral-Rich Hydration at Home, Office, or Travel

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•CERAMIC AND 5-STAGE FILTRATION PROCESS: Effectively removes impurities, rust and sediment, ensuring safe drinking water.
•IMPROVED TASTE AND ODOR REMOVAL: Granular Activated Carbon (GAC) and mineral filtration help eliminate unpleasant tastes and odors caused, while retaining essential minerals for healthier, better-tasting water.
•LARGE 4 GALLON (14 LITRE) CAPACITY: Perfect for any space, including bedrooms, kitchens, living rooms, home offices, canteens, gyms, doctor's offices, dorms, and more. Suitable for family use, small offices, and individual hydration needs.
•NO POWER REQUIRED: Operates without electricity, utilizing a gravity filtration system. Ideal for locations without reliable power, and during outages, ensuring continuous access to filtered water.
•SAVES MONEY AND REDUCES WASTE: Avoid the expense of bottled water while reducing plastic waste. This environmentally friendly solution offers clean water without relying on deliveries or plastic bottles.
•EASY ASSEMBLY AND OPERATION: Quick to set up and simple to use. The dispenser comes with a comprehensive user manual for effortless installation and easy operation.
•VERSATILE USE: Provides clean water for drinking, cooking, or even pets, making it an all-around household essential.
•PERFECT FOR EMERGENCIES: Works without electricity, providing a consistent supply of clean water during power outages or emergencies.
•SILENT AND ECONOMICAL: Enjoy peace and quiet with a noiseless operation while reducing your water costs. DURABLE AND RELIABLE: Designed for long-term use, with easy maintenance for continued performance. Ceramic filters can be cleaned with wet sandpaper, and the filter cartridges are replaceable once the mineral balls dissolve.
•ECO-CONSCIOUS: With no need for bottled water, there’s a reduction in plastic waste and the environmental impact caused by transporting bottled water. EASY FILTER MAINTENANCE: Replacement ceramic and 5-stage filters are available to maintain high water quality and filter performance over time.

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$49.99

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