Updated: July, 2025

10 Best Reverse Osmosis Water Filters in Canada

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1

iSpring

9.9

Exceptional

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

Why we love it

Removes 1,000+ contaminants effectively.

Easy DIY installation process.

Produces great-tasting alkaline water.

Main highlights

Comprehensive Filtration System
6-stage filtration removes up to 99% of over 1,000 contaminants, ensuring clean, pure drinking water.

Ideal for Home Use
Perfect for households seeking bottled-water quality under the sink, reducing plastic waste.

Customer Praised Taste
Users love the natural taste of water, thanks to the Alkaline Remineralization filter.

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How do we rank?

How do we rank
Our AI-powered platform ranks products using multiple weighted factors from millions of products and user reviews across the web, providing the most valuable and real data. Higher scores rank first.
2

Express Water

9.7

Exceptional

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

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

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.

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3

Geekpure

9.6

Exceptional

Geekpure Replacement Universal Filter Set for Standard Reverse Osmosis RO Water Filter System (4 Count)

Why we love it

Universal fit for most RO systems.

Extends RO system lifespan.

High-quality ISO-certified filters.

Main highlights

Universal Compatibility
Fits almost standard sized 5 or 6 stage reverse osmosis systems, ensuring easy installation and replacement.

Ideal for RO System Maintenance
Perfect for maintaining and extending the life of reverse osmosis systems in homes and offices.

Highly Praised Packaging
Customers appreciate the individually wrapped and sealed filters for extended shelf life.

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4

iSpring

9.5

Excellent

iSpring F3 6-Month Prefilter Replacement Supply Filter Cartridge Pack Set for Standard Reverse Osmosis RO Systems, F3, White

Main highlights

Individually wrapped 6-month high capacity prefilter replacement cartridge pack for most standard RO filtration systems

Experience clean, safe, and good-tasting water every time you turn on the faucet

3 pieces of 10" x 2. 5" replacement water filters included: 1x sediment filters, 1x granular activated carbon filters, and 1x carbon block filters.

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5

iSpring

9.4

Excellent

iSpring F9K 1-Year Reverse Osmosis Water Filter Replacement Cartridge Pack Set for 6-Stage Alkaline Mineral RO Filtration Systems, Without Membrane, White

Main highlights

The RO membrane removes not only harmful pollutants but also a few helpful minerals. As a result, a standard 5 stage RO system produces slightly acidic water with a pH of 7. 0 or below. Alkaline mineral filter produces alkaline water with restored healthy minerals such as natural calcium, magnesium, and potassium ions, which ph-balances the RO water.

Individually wrapped 1-year high capacity filter replacement cartridge pack for 6-stage RO systems

Experience clean, safe, and 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 – even better than most bottled water

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6

HUI NING

9.3

Excellent

HUI NING 50GPD Water Filter Set Replacement Universal Cartridge 10"x2.5" 5 Micron for Whole House RO System,Any Standard RO Unit and Under Sink Water Filtration System

10% Off

Main highlights

【UDF(GAC Carbon)】10 Gac Coconut Granular Activated Carbon Water Filter for chlorine reduction, taste reduction and odor reduction-2.7" x 9.9"

【PP(Sediment PP)】Polypropylene PP Sediment Replacement Filter Cartridge for Whole House Water Filtration which effectively intercepts sediment, rust and other impurities in the water- 2.5" x 10"-5 Micron

【Filter element】PP*1，CTO*1，UDF*1，50GPD RO Membrane*1，for 5-stage, 6-stage & 7 stages systems

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7

Express Water

9.1

Excellent

Express Water Incorporated FLTSETC6S6G6I3M50 Reverse Osmosis 22 Water Filter Replacement Set

Main highlights

Smart Filtered Sediment: The outer layers catch the coarsest contaminants and the inner layers catch finer contaminants This means your filter lasts longer and give you the best value

Precision Engineered Carbon Filters: Efficiently packed carbon granules maximize your filtration surface area which means your filters give you the best value

Exactly what you need - Drink the healthiest water on Earth All our filters are specially engineered to work together, producing the safest best tasting water you’ll ever drink

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8

iSpring

8.9

Very Good

iSpring F7-GAC for Standard 5-Stage Reverse Osmosis RO Systems 1-Year Replacement Supply Filter Cartridge Pack Set, 7 Count (Pack of 1)

17% Off

Why we love it

Improves water taste and quality.

Simple filter replacement process.

Comprehensive filtration coverage.

Main highlights

Comprehensive Filtration System
Includes 7 filters for sediment, carbon, and post-carbon filtration, ensuring clean, great-tasting water.

Ideal for Home Use
Perfect for families wanting better tasting water and ice, fresher beverages, and healthier cooking.

Easy Filter Replacement
Quick connection design praised for simplifying filter changes.

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9

Watts Premier

8.8

Very Good

Watts Premier 500024 7-PK RO Filters Premier 1-Year 5-Stage Reverse Osmosis Replacement Filter Kit

Why we love it

Comprehensive one-year filter kit.

Compatible with most systems.

NSF Certified for safety.

Main highlights

Comprehensive Filter Kit
Includes seven filters for a complete one-year replacement.

Universal Compatibility
Works with all standard RO and filtration systems.

NSF Certification
Ensures high safety and quality standards.

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10

Geekpure

8.5

Good

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

Main highlights

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

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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Our top pick

1

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
The iSpring RCC7AK is a top-tier under-sink reverse osmosis system, certified by NSF/ANSI 58 for its exceptional filtration capabilities. This 6-stage system not only removes over 1,000 harmful contaminants, including chlorine, fluoride, and lead, but also features an Alkaline Remineralization filter. This sixth stage restores beneficial minerals, resulting in water with a balanced alkalinity and a natural, refreshing taste. Perfect for home use, it offers a simple DIY installation process, complete with all necessary components and lifetime technical support. Customers particularly appreciate the great-tasting water and the system's ability to significantly reduce plastic waste by providing bottled-water quality at home. With its transparent first-stage housing for easy inspection and long-life pre-filters, maintenance is minimal, making it a practical choice for those seeking reliable and healthy drinking water solutions.