10 Best reverse osmosis water systems in Canada

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Last Updated - 2026/04/02

Best Choice

01
Waterdrop

Waterdrop G3P800 Reverse Osmosis System, 800 GPD Fast Flow, NSF/ANSI 42 & 53 & 58 & 372 Certified, 3:1 Pure to Drain, Tankless Under Sink RO Water Filter System, LED Purifier, Smart Faucet

17% Off
Main highlights

【Stylish look, tankless design】The RO system G3P800 has a stylish look. The tankless design saves under sink space and ensures the safety of water. The system can consistently produce water and ensures purity in every drop. You can get purified water anytime without waiting.
【Smart faucet】G3P800 is equipped with a smart faucet, by which you can get the TDS level and water quality at a glance. The lifespan of LED lamp is up to 50 years. The LED can be automatically turned on when water flows by.
【NSF/ANSI standard 42 & 53 & 58 & 372 certified】This tankless reverse osmosis system is certified by IAPMO R&T against NSF/ANSI 58 for reduction of TDS. Also it has been tested and certified against NSF 42 & 53 to reduce chlorine, bad taste, odor and so on. Besides, the system is certified by NSF/ANSI 372 for lead-free materials.
【800 GPD high capacity, 3:1 pure to drain ratio】The Waterdrop G3P800 reverse osmosis system offers a higher water capacity (800 gallons per day), thereby meeting demands of a big family for pure water. Furthermore, by high water flow, it filters one cup of water in just 5s. By an advanced water dispensing technology, this tankless RO water filter system produces just a cup of wastewater for every three cups of filtered water produced.
【10-Stage filtration】 Tested by official third-party laboratory (SGS), through 10-stage filtration, G3P800 can effectively reduce PFAS, fluoride, heavy metals like lead, chromium, iron, salts like nitrate and chloride as well as large particles and radioactive substances such as radium. Our RO system can reduce such as vinyl chloride, ethylhexyl acrylate, isobutylene, monobutyl ether, according to the reverse osmosis membrane technical manual.
Drilling 2 holes for installation. One for RO faucet and the other for drain pipe connection.
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9.8

Exceptional

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02
iSpring

iSpring RCC7P 75 GPD Reverse Osmosis System with Pump, 5-Stage Boosted Performance Superb Taste Under Sink Reverse Osmosis Drinking Water Filtration System with Brushed Nickel Faucet

9.9 Sheerness

9.9 Taste

9.7 Easy installation
Main highlights

WQA Certified System with Premium quality components ensure highest reliability and low maintenance for many years to come. Clear see-through 1st stage housing makes filter inspection a snap.
Reverse Osmosis produces purified drinking water by pressurizing water molecules through RO membrane and leaving impurities out. RCC7P’s extremely durable electric booster pump ensures high efficiency, reliable, and consistent RO performance regardless of pressure variations; delivering higher throughput with less waste water in comparing to pumpless models.
High Efficiency Reverse Osmosis system for safer, healthier and on-demand drinking water. This under sink mounted water filter and the best water softener removes up to 99% of over 1, 000 contaminants and hardness, including lead (removes up to 98% of lead), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more.
For indoor use only. Extended Manufacturer Warranty upon registration, 123filter com/warranty, 678-261-7611, Alpharetta GA
5-Stage gradient filtration produces great-tasting purified water every time you turn on the faucet right at your kitchen counter – even better than most bottled water. Enjoy crystal clear ice cubes, fresher tea and coffee, better tasting foods, healthier baby formula.
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9.7

Exceptional

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03
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

9.7 Taste

9.5 worth the money

9.3 Easy installation
Main highlights

TRUSTWORTHY SUPPORT – America’s favorite RO brand, backed by lifetime technical support in Atlanta, GA, ensuring expert assistance whenever you need it.
SEE WHAT’S CAUGHT – The transparent first-stage filter housing makes it easy to monitor contaminant buildup, ensuring timely filter changes.
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.
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.
MINERAL BOOST – The patent-pending natural mineral AK stage delivers spring water with a balanced, healthy pH and multiple essential minerals.
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.
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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9.6

Exceptional

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04
Slevoo

Reverse Osmosis Water Filter Countertop, 6 Stage Ro Water Filtration System with Remineralization Glass Pitcher, 4:1 Pure to Drain, TDS Displaying, 4L Capacity Tank for Home Office(Warm White)
Main highlights

【User-Friendly】①Automatically power saving standby mode when not in use to reduce power consumption. ②TDS real-time purified water displaying! Drinking water safety is visible! ③Filter life time indicator for your convenience. ④3 water capacity options (8oz 20oz 40oz) to meet your needs! ⑤Smart Auto-Flush ensuring water quality！
【US-based Customer Support】Slevoo provide professional reliable US-based customer support. If you have any questions about your purchase, welcome to reach out to our after-sales team and water specialists online phone or email for ongoing professional support.
【Remineralization Glass Pitcher Included】The remineralization filter in the food-grade glass pitcher adopts natural materials to restore minerals like calcium, magnesium, sodium, potassium, etc. And it will not only remineralize your water but increase antioxidants and PH balance your RO water, help electrolyte balance, and enhanced taste.
【Plug-and-Play, No Installation Required 】Plumbing or drilling required for the countertop reverse osmosis water filter. You can use it in anywhere power soure, such as apartment, kitchens, living rooms, offices, camping, RVs, and more. Give your loved ones water that’s packed with minerals and benefits!
【Higher-Efficiency 6-Stage Filtration】Against NSF/ANSI 58 Standard. Slevoo reverse osmosis system's 6-stage 0.0001μm RO water filtration system can effectively remove pollutants from water, including heavy metals (lead, arsenic, aluminum, etc.), fluoride, PFAS, chlorine, chloramines. Note: Supported Water TDS Level Maximum (PPM) is 500 PPM.
【For 2 to 3 People Household】Slevoo reverse osmosis filter system has a large raw water tank capacity of 1.06 Gal (4L), 0.845(3.2L) of pure water can be obtained at one time. It can greatly reduce the painful of the hassle of refilling again and again a day. Tips: In order to improve water utilization, please fill the water tank to the MAX Line.
【20% Water Utilization Rate Improved】With the advanced and innovative recycling multi filtration technology, the countertop water filter system has the pure to drain ratio of 4:1. Compared with other water filter countertop, Ours system improved water utilization rate by 20%. No more need to waste money on bottled water, you'll do your part to save the planet.
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9.5

Excellent

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Value for Money

05
Express Water

Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Filters – 50 GPD, 14 x 15 x 5, White

9.7 worth the money

9.5 Easy installation

9.5 Taste
Main highlights

Water Purification System: Drink the healthiest water on Earth. All our water filters are specially engineered to work together, producing the safest and best tasting water you'll ever drink
Under Sink Water Filter: Don't waste money on professional installation. Express Water's quick and easy-to-understand design means you can install and understand everything about your new water filtration system
Under Sink Water Filter System: No need to mess with refilling or activating your water filter, Express Water's water filtration systems automatically fill your water tank with high quality drinking water
Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system reducing up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, and more.
On Demand Support: Support from experts who can answer any of your questions about your new water filter
Leak Detection: Each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture
Help Has Arrived - Support from experts who can answer any of your questions about your home's water
Customizable RO Water Filter System: Express Water home water filtration systems are fully upgradable and customizable with quick connecting fittings. Try additional filtration attachments including UV Water Filter, Alkaline Water Filter, Deionization Water Filter, and more
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9.3

Excellent

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06
iSpring

iSpring RCC7, NSF Certified, High Capacity Under Sink 5-Stage Reverse Osmosis Water Filter, RO Drinking System, 75 GPD, Brushed Nickel Faucet, Patented Top-Mounted Faucet Design for Easy Installation

9.9 Tech Support

9.9 Easy to build

9.5 Taste
Main highlights

[MAINTENANCE & REPLACEMENT SCHEDULE]: Premium quality components ensure highest reliability and low maintenance for many years to come. Clear see-through 1st stage housing of the under sink water filter system makes filter inspection a snap. It is recommended to replace the three pre-filters: every 6 months, RO membrane: every 2-3 years, GAC filter: every 12 months. The replacement filter set can be found in the product details below.
[EASY DO IT YOURSELF INSTALLATION]: Typically in a couple of hours. Refer to manual and our YouTube videos to install this RO 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. For leak-free installation, simply push tubing ½ inch deep into quick-fitting connectors and lock - no threading pipes needed. 4 gallon metal pressurized tank with up to 3.2 gallon holding capacity.
[CERTIFIED TO NSF/ANSI 58]: High Capacity Reverse Osmosis water filtration for safer, healthier water. This under sink mounted water filter and water softener removes up to 99% of over 1, 000 contaminants, including lead (removes up to 98% of lead), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more. Features a beautiful European-designed brushed nickel all-metal faucet.
[BENEFITS]: Fits under a standard kitchen sink. This water filter for sink helps you experience clean, safe, good-tasting water every time you turn on the faucet. Enjoy crystal clear ice cubes, fresher tea and coffee, better tasting foods, healthier baby formula. Three pre-filters to remove large contaminants and protect RO membrane. RO filter to remove contaminants down to 0. 0001 microns; fine GAC filter to provide final polishing to the purified water.
[100% SATISFIED CUSTOMERS]: RCC7 is backed by iSpring with a 1-year manufacturer warranty upon registration, and lifetime personalized support from Atlanta, GA USA.This RO under sink water system is to deliver endless bottled quality drinking water right in your home for many years to come, eliminating plastic bottles.
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9.2

Excellent

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07
Geekpure

Geekpure 5 Stage Reverse Osmosis Drinking Water Filter System 75 GPD - with Extra 7 Filters

9.3 Taste

9.1 worth the money

8.9 Easy installation
Main highlights

System comes with high quality quick connect fittings, color coded tubes, and installation manual for an easy DIY experience, No need professional installation, you can understand everything about your system and install it with our clear, well-organized instructions in a couple of hours.1 year manufacturer warranty, no need registration
System Capacity 75 gallons per day @ 60 psi. Tank Capacity 2.8 gallon, Fits most under sink cabinets, smart size ensures you get pure water every time. RO tube size: 1/4 inches and 3/8 inches. The ratio of pure water and waste water is 1:2. Feed Water Condition: Water Pressure: 40 - 100 psi, Temperate: 40-110°F/5-45°C, PH: 3.0 -11.0, Max TDS: 2000 ppm tap water or well water
Premium quality components ensure high reliability and low maintenance for many years. All tubes, quick push fittings, storage tank, and RO membrane are NSF certificated, to provide healthy and pure water. LEAD FREE deluxe kitchen sink faucet as last pure water guarantee in your home
Plus extra 7 Filters, Premium long-lasting replacement filters and parts are universal compatible and standard size.
Advanced Reverse Osmosis Technology - Filter Precision 0.0001 micron, Removes up to 98% of contaminants including arsenic, lead, fluoride, mercury, heavy metals and 1000+ contaminants, Experience fresher healthier baby formula, tea and coffee, better tasting foods and crystal clearer ice cubes, great tasting even better than most bottled water
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8.9

Very Good

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08
Geekpure

Geekpure 6 Stage Reverse Osmosis Drinking Water Filter System 75 GPD - with Mineral Filter

17% Off

9.5 worth the money

8.0 Taste

8.0 Easy installation
Main highlights

The regular Ro system reduces salt by 95%, even a good mineral for our body. This unit includes an additional 6th step mineral filter that adds various healthy minerals to pure water, includes natural ions of calcium, magnesium, sodium, potassium, zinc, lithium, iodine, selenium and offering a good taste of water
System capacity 75 gallons per day at 60 psi. 2.8 gallon tank capacity, fits most under sink cabinets, smart size to ensure you get pure water every time. Hose size: 1/4 inch and 3/8 inch. The ratio of pure water to wastewater is 1:2. Feed water condition: Water pressure: 40 - 100 psi, Temperate: 40-110 °F/5-45 °C, PH: 3.0-11.0, Max TDS: 2000 ppm tap water or well water
High-quality components ensure maximum reliability and reduced maintenance for many years. All tubes, quick couplings, storage tank, Ro membrane are NSF certified, to provide healthy, safe and pure water. LEAD FREE Luxury Kitchen Sink Faucet As The Last Guarantee Of Pure Water In Your Home
Advanced technology - Removes up to 99% of contaminants including arsenic, chlorine, lead, fluoride, mercury, cadmium, odors, heavy metals and over 1000 contaminants. Filters up to 0.0001 micron. Experience healthier baby formula, tea and coffee, better tasting foods and clearer ice cubes, tasting even better than most bottled water
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8.8

Very Good

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09
Geekpure

Geekpure 6 Stage Reverse Osmosis Drinking Water Filter System 75 GPD - with Mineral Filter

17% Off

9.5 worth the money

8.0 Taste

8.0 Easy installation
Main highlights

The regular Ro system reduces salt by 95%, even a good mineral for our body. This unit includes an additional 6th step mineral filter that adds various healthy minerals to pure water, includes natural ions of calcium, magnesium, sodium, potassium, zinc, lithium, iodine, selenium and offering a good taste of water
System capacity 75 gallons per day at 60 psi. 2.8 gallon tank capacity, fits most under sink cabinets, smart size to ensure you get pure water every time. Hose size: 1/4 inch and 3/8 inch. The ratio of pure water to wastewater is 1:2. Feed water condition: Water pressure: 40 - 100 psi, Temperate: 40-110 °F/5-45 °C, PH: 3.0-11.0, Max TDS: 2000 ppm tap water or well water
High-quality components ensure maximum reliability and reduced maintenance for many years. All tubes, quick couplings, storage tank, Ro membrane are NSF certified, to provide healthy, safe and pure water. LEAD FREE Luxury Kitchen Sink Faucet As The Last Guarantee Of Pure Water In Your Home
Advanced technology - Removes up to 99% of contaminants including arsenic, chlorine, lead, fluoride, mercury, cadmium, odors, heavy metals and over 1000 contaminants. Filters up to 0.0001 micron. Experience healthier baby formula, tea and coffee, better tasting foods and clearer ice cubes, tasting even better than most bottled water
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8.7

Very Good

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10
Geekpure

Geekpure 5 Stage Reverse Osmosis Drinking Water Filter System 75 GPD - with Booster Pump

9.3 Taste

9.1 Instruction

8.9 worth the money
Main highlights

System comes with high quality quick connect fittings, color coded tubing, and videos for an easy DIY experience,Don’t waste money for professional installation ,you can understand everything about your system and install it with our clear, well-organized instructions in a couple of hours.
System Capacity 75 gallons per day @ 60 psi.Tank Capacity 2.8 gallon,Fits most under sink cabinets,smart size for ensure you get pure water every time.Pipe Size:1/4 inches and 3/8 inches.The Ratio of pure water and waste water is 1:2.Feed Water Condition:Water Pressure: 15 - 50 psi,Temperate:40-110°F/5-45°C,Ph:3.0 -11.0,Max TDS :2000 ppm tap water or well water
Premium quality components ensure highest reliability and low maintenance for many years to come. All tube,quick push fittings, storage tank,Ro membrane is NSF certificated,to provide healthy and pure water. LEAD FREE deluxe kitchen sink faucet
Designed for use in areas with water pressure lower than 40 PSI,Turn on & off automatically.Plus extra 4 replacement filters, total 9 pieces filters in the box. Standard sized replacement filters
Advanced Technology-Removes up to 98% of contaminants.Including arsenic,lead,fluoride,mercury,heavy metals and 1000+ contaminants. 0.0001 micron.Experience fresher healthier baby formula,tea and coffee, better tasting foods and crystal clearer ice cubes,great tasting even better than most bottled water
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8.6

Very Good

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