Top 10 Whole House Reverse Osmosis Water Filtration System – Under-Sink & Countertop Filtration

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1. iSpring


Pressure Gauge, iSpring RCS5T 500 GPD Grade Commercial Tankless Reverse Osmosis RO Water Filter System with 1:1 Drain Ratio

iSpring #ad - 3rd stage carbon block Filter removes any residual chlorine, tastes, viruses, sand and dirt. Great capacity: advanced dual-flow 500gpd membrane saves 60% of water, salons, with LOW WASTE 1: 1 drain to clean water ratio. 100% satisfied customers: extended manufacturer with lifetime personalized support.

5th stage post carbon filter removes chlorine, smells, also extending membrane's life. Easy-to-install and replace filter: typically, in a couple of hours with industry-leading help just a phone call away with well-organized instructions and videos. Great for light commercial in Restaurants, Labs, and Offices all benefit in their ways from high-quality RO water. Built in booster pump increases the production of purified water by raising the water pressure and maximizes RO production rate to the optimal level for the reverse osmosis process.

Minimum feed water pressure psi:35. 2nd stage gac filter effectively adsorb free chlorine, and odors to improve the quality of your drinking water. Superior 5-stage filtration: 1st stage pp sediment filter removes larger particles like rust, humus, heavy metals, pesticide residues & other harmful substances. Features: come with sliver chrome drinking water faucet with 360° free swivel and Easy to Read Water Pressure Gauge. Clear see-through 1st stage housing makes filter inspection a snap.
BrandiSpring #ad
ManufactureriSpring #ad
Height18 Inches
Length14 Inches
Weight31.44 Pounds
Width11 Inches
Part NumberRCS5T-EU
Warranty30 day warranty against manufacturer defects

2. iSpring


ISpring WGB32B 3-Stage Whole House Water Filtration System w/ 20-Inch Big Blue Sediment and Carbon Block Filters

iSpring #ad - The system has a capacity of 100, 000 gallons of water, enough to supply a family of four with clean water for a full year. This system is installed at the main water supply line in order to treat all the water in your home. The second and third stage ctO Carbon Block filters are made of high quality coconut shell carbon for maximum filtration efficiency and filter life.

If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis RO systems. With 1” npt inlet / outlet and Big Blue 20” x 4. 5” filter cartridges, the system has minimum impact on water flow up to 15 GPM and requires minimum maintenance. Diy installation and maintenance: refer to our manual and our helpful youtube videos for easy DIY installation. We are happy to help! please note: unlike an ro system, this system will not reduce total Dissolved Solids TDS, and instead keeps healthy minerals in your water.

Local support team. Peace of mind customer service: register online to activate your extended manufacturer warranty and life-time free tech support from U. S. Protect your family and household appliance from sediment, and more: Say goodbye to smelly, industrial solvents, vocs, pesticides, bad tasting water! Our system removes up to 99% of chlorine from water as well as up to 95% of sediment, chlorine, rust, herbicides, and various other contaminants. Both are tested by an independent third-party to meet NSF/ANSI standards.
BrandiSpring #ad
ManufactureriSpring #ad
Height27.75 Inches
Length24.25 Inches
Weight49 Pounds
Width7.75 Inches
Part NumberWKB32B

3. Express Water


Easy Release, Express Water Whole House Water Filter – 3 Stage Home Water Filtration System – Sediment, and 1” Inch Connections, Coconut Shell Carbon Filters – includes Pressure Gauges

Express Water #ad - Whole house water filter: reduce harmful contaminants from your entire home’s water with Express Water’s 3 Stage Water Filtration System. Unlike reverse osmosis systems, this system will NOT reduce Total Dissolved Solids TDS. Please be informed - this whole house system is installed at the main water supply line for the purpose of treating all incoming water in your home or business.

If you are searching for a filter that removes TDS, we recommend our Express Water Reverse Osmosis systems. Standard water filter: drink the healthiest water on Earth as your home water filter reduces over 52 different contaminants from your water including chlorine, rust, pesticides, and more. Express water’s water filtration systems are ready to install with 1” inch standard connections. Durable whole house water filter: express Water Whole Home Water Filtration Systems are constructed with standing stainless-steel frames for long term durability and quality.

Quality guaranteed: rest easy with our 1-year warranty on all Express Water Whole Home Water Systems. On demand support: support from experts who can answer any of your questions about your new home water filter. Easy to replace water filter cartridges: All Express Water whole house water filter replacement cartridges are designed for quick and easy replacement to keep your system up and running.
BrandExpress Water #ad
ManufacturerExpress Water #ad
Height30 Inches
Length23.5 Inches
Weight62 Pounds
Width8.5 Inches
Part NumberWH300SCGS



55W UV Ultraviolet Light + Sediment & Carbon Well Water Filter Purifier System with 3/4" Ports > 12 GPM UV Sterilizer with Big Blue Size 4.5" x 10" Filters

BLUONICS #ad - Stage 2: 5 micron Carbon Block Filter. Safe: this system does not use any chemical products to treat water. 2 heavy-duty construction 10" big blue whole house with us standard npt 3/4" brass inlet / outlet. Stage 4: 12 gpm uv Ultraviolet Sterilizer.

Complete water filtration system. Stage 1: 20 micron string wound sediment filter. Strong: stainless steel unit capacity: 12 gpm inlet/outlet: 3/4" mntp 36" uv lamp: 55w 110v complete system with Mounting Clamps, Glass Tube and UV Bulb LONG LASTING: UV Bulb Change Times: 1 Year. Powerful & reliable: 55w whole house 12 gpm uv ultraviolet sterilizer water filtration unit. For particles such as sand, silt, lower pressure drop and more efficient when compared to other sediment filters.

1 year replacement filter package for this system is Amazon item B07KBDT21Q. Precise filtration down to 1 micron. The string wound sediment filter offers a longer cartridge life, dirt, and rust. Removes chlorine, greater dirt holding capacity, bad taste, odor, higher flow rate, it allows a better performance for the following Carbon Block filter. To remove these particles, organic solvents and chemicals. Excellent to remove Sediment, Odors and many other chemicals and contaminants.
ManufacturerWholesale Market LLC #ad
Weight47 Pounds
Part NumberBBUV55W3

5. 3M Aqua-Pure


Alfi 5621104 3M Aqua-Pure Whole House Water Filtration System – Model AP904

3M Aqua-Pure #ad - Ideal for larger homes and is effective with both chlorinated municipal and non-chlorinated well water systems. Clearly great water: this whole house water filter reduces sediment build-up, chlorine taste and odor as well as scale – helping to increase the life of hot water heaters and appliances dishwashers, clothes washers,  etc.

It consists of a corrosion resistant material that provides long service life. Corrosion resistant: 304 stainless steel head can be installed on existing copper pipes in the home. Flow rate: 1” inlet and outlet connections to help a plumbing professional with easy installation and peak flow rates up to 20 gpm to meet the water pressure demands of most homes. 100, 000 gallon capacity: replacement cartridge has an activated carbon filter with nominal heavy duty particulate reduction rating of 5 micronss and a 100, 000 gallon capacity at high flow rates of 10 gpm and even at intermittent peak flow rates of 20 gpm.

Easy to replace: sanitary quick change sqc design allows for fast and easy change-outs of the 3M Aqua-Pure AP917HD-S Replacement Water Filter Cartridge without having to contact the filter media or the need for a filter wrench. Fitting type: NPT Female. Nsf standard 42 certified: tested by one of the world’s most respected independent certification organizations that helps protect the world’s food, water, consumer product and environment.
Brand3M Aqua-Pure #ad
Manufacturer3M #ad
Height4.5 Inches
Length25.2 Inches
Weight10.35 Pounds
Width4.5 Inches
Part Number5621104

6. Express Water


Express Water UV Reverse Osmosis Water Filtration System – 11 Stage UV Water Filter with Faucet and Tank – Under Sink Water Filter with Alkaline Filter for added Essential Minerals – 100 GDP

Express Water #ad - Reverse osmosis water filter: experience what water should taste like with the Express Water reverse osmosis water filtration system removing up to 99. 99% of lead, chlorine, nitrates, Bacteria, Fluoride, Arsenic, Calcium, and more. Express water’s quick and easy-to-understand design means you can install and understand everything about your new water filtration system.

Uv water purification system: powerful UV Sterilization eliminates coliform, microorganisms, E. Leak detection: each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture. Under sink water filter: don’t waste money on professional installation. Alkaline water filter: alkaline filtration System with Active Mineral Technology adds Calcium, Magnesium, Potassium, and other minerals to your body needs right in your water. Under sink water filter system: no need to mess with refilling or activating your Alkaline UV water filter system, Express Water’s water filtration systems automatically fill your water tank with high quality drinking water.

On demand support: support from experts who can answer any of your questions about your new water filter. Coli, viruses, bacteria, and more from your drinking water. Included components: ultraviolet Sterilizer Uv Bulb 4 Gallon Water Storage Tank Tank Valve & More. Quality guaranteed: rest easy with our 1-year warranty on all Express Water Reverse Osmosis Water Systems.
BrandExpress Water #ad
ManufacturerExpress Water Incorporated #ad
Height5 Inches
Length15 Inches
Weight0.22 Pounds
Width14 Inches
Part NumberROALKUV10M

7. APEC Water Systems


APEC Top Tier Supreme Certified Alkaline Mineral pH+ High Output 90 GPD 6-Stage Ultra Safe Reverse Osmosis Drinking Water Filter System ULTIMATE RO-PH90

APEC Water Systems #ad - Provides unlimited ultra-fresh, lead, as well as toxic fluoride, VOCs, taste, time and hassle of buying costly, arsenic, nitrates, bottled water. The original, top-notch JG Quick Connect fittings for easy and secure leak-seal. Ph enhanced: add 100% us-made high-purity calcium carbonate to effectively raise pH in the water for those who desire alkaline water.

Lifetime support: provides you the ultimate satisfaction and peace of mind with our lifetime support and 2 year manufacturer warranty with registration. High performance: guaranteed to remove up to 99% of contaminants such as chlorine, clean, odor, great tasting water right at home. System is designed, engineered and assembled in USA to guarantee water safety & your health. Supreme quality: built with super long-lasting 100% us made filters, RO-PH90 is the most durable system in the industry that lasts for decades.

Wqa certified: ro-ph90 is tested and certified by wqa to remove up to 99% of contaminants including arsenic, lead, fluoride, chlorine, heavy metals and 1000+ contaminants. Save money, heavy metals and 1000+ contaminants. Equipped with premium faucet & parts: comes with 100% metal, 100% lead-free luxury designer faucet, plus jG Food grade tubing to provide safe, contamination-free pure water.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height18 Inches
Length7 Inches
Weight28 Pounds
Width15 Inches
Part NumberRO-PH90

8. Express Water


Gauges, Pressure Pump, 600 GPD Commercial Reverse Osmosis Water Filtration System – 5 Stage High Capacity RO Filtration – Includes Pre-Filters, and RO Membrane, Controller

Express Water #ad - Better your appliances - Increase the life of water heaters, dishwashers, and other appliances. Water for whatever you need - Perfect for Restaurants, Hotels, Laundry, Manufacturing, and More. Perfectly pure - clear, clean, fresh tasting water wherever you need it, whenever you need it. Advanced filtration - RO is the most effective way to eliminate countless micro-contaminants. System protection - a full body stainless steel frame contains all system components & saves space.
BrandExpress Water #ad
ManufacturerExpress Water #ad
Height31.5 Inches
Length15.75 Inches
Width18.11 Inches

9. Waterdrop


USA Tech Support, TDS Reduction, FCC Listed, Waterdrop RO Reverse Osmosis Water Filtration System, Tankless, 1:1 Drain Ratio, Black, 400 GPD Fast Flow, Model: WD-G2-B

Waterdrop #ad - The airtight housing reduces noise, while the process of installing and replacing the filter is faster and more convenient than with other filters. Get a cup of filtered water in about 12 seconds, satisfying your needs while saving time. Once the process is complete, you can use the undrinkable water for other purposes, such as watering your plants.

Special notice: you must fully turn on the faucet and flush the ro system for 30 minutes after the installation process has been completed. The innovative tankless design saves space and ensures faster water flow and purer water. Automatic notification system: you don’t have to inspect the service life and filtration of the filters yourself, as the filter life indicators automatically notify you about the service life and usage.

Due to the filters’ twist-and-pull design, you can replace them in 3 seconds. It also saves over 70% more under-sink storage space than does the ordinary RO system. The installation of the Waterdrop G2 RO System takes less than 30 minutes. During this process, the water will be undrinkable. Advanced composite filters: the composite integrated filters result in more effective filtration. It removes sediment, and an activated carbon block. However, the light on the mainframe will flash.
BrandWaterdrop #ad
ManufacturerWATERDROP #ad
Height13.9 Inches
Length17.32 Inches
Weight20.94 Pounds
Width5.91 Inches
Part NumberWD-G2-B
WarrantyPlease note: Most RO systems do NOT recommend using well water as a source. Large particles in well water will clog the filters easily and shorten filter life. Additionally, well water may not reach the feed water pressure. If you have to use well water, we recommend to add a pre-filtration system.

10. iSpring


Taste, 1" Inlet/Outlet, and Odor Filter, iSpring WGB21B 2-Stage Whole House Water Filtration System with 10" x 4.5" Big Blue Sediment CTOChlorine

iSpring #ad - A pressure release valve allows for the release of built-up pressure when changing filters. Two-stage effective filtration 1st-stage premium 5-micron polypropylene sediment filter fp15b captures dirt, silt, and is highly effective on VOCs like pesticides, and scale particles and extends the life of CTO carbon block filter.

Superb filtration capacity 10"x4. If you are interested in a filter that removes TDS, this system will NOT reduce Total Dissolved Solids TDS, consider our iSpring Reverse Osmosis RO systems. 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. 1-year manufacturer warranty and extended upon registration at iSpring. 5" replaceable whole house water filters can provide up to a full year of clean waterup to 50, 000 gallons for a family of four.

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. Filter wrench included to make routine filter changes easy and quick. Tds note unlike an ro system, and instead keeps healthy minerals in your water. Easy installation and filter change the system comes pre-assembled onto the mounting bracket for a streamlined, DIY installation. 1-inch inlet and outlet ports allow fast water flow with less pressure loss.
BrandiSpring #ad
ManufactureriSpring #ad
Height9 Inches
Length17 Inches
Weight15 Pounds
Width18 Inches
Part NumberWGB21B
WarrantyBy default every iSpring whole house water filtration system comes with thirty-day money back policy and one-year limited manufacturer warranty. We care and love to help customers. Besides DIY videos on YouTube and Knowledge Base on our website, we provide lifetime customer service from Atlanta, GA. Please don't hesitate to reach out to us before and after your purchase. Your satisfaction is our business!