Skip to content
Free Shipping Available 30% Off on All Products 90 Days Return
Reverse osmosis water filter with happy family after cleaning vegetables in kitchen

Reverse Osmosis Systems for Canadian Homes

Cleaner, better-tasting water with an RO system built for your space and lifestyle. Choose from budget-friendly under-sink, compact tanked, high-flow tankless, or instant hot & cold RO options.

Expert support

Reach our experts anytime, day or night

Shop Now - Pay Later

Buy today, split payments over easy months

90 Day Return

Not satisfied? Return it within 90 days

Fast and Free Shipping

Get free shipping, delivered fast and tracked

Compare Our Reverse Osmosis Systems

Choosing the right RO system for your home shouldn’t be difficult. Our quick guide below makes it easier to compare models and features so you can pick the best reverse osmosis water filter for your budget, needs, and style.

Tankless Reverse Osmosis System

Tankless Reverse Osmosis System

$979.30
Best for High flow + cabinet space
Installation Under-sink
Filtration 6 stages incl. alkaline and UV
Output / flow 800 GPD
Tank Tankless
Certification no system listing exists
Filter interval ~12 months
Key feature Smart faucet: TDS + filter alerts
Warranty 1 year
View System
illi Water RO hot and cold countertop water dispenser filling a glass of lemon water

RO Hot & Cold Water Dispenser

$661.50
Best For Instant temperature + countertop convenience
Installation Countertop; tank mode needs no plumbing; optional direct line
Filtration 6-stage RO + UVC; mineral stage
Output / flow On demand; 5°C cold, 10–100°C adjustable
Tank Built-in tank; optional direct line
Certification CSA / RoHS
Filter interval Up to 12 months
Key feature Touchscreen, temperature presets, child lock, self-cleaning
Warranty 1 year
View System
Pentair 4-stage under-sink reverse osmosis system with storage tank and chrome faucet

Pentair Reverse Osmosis System

$839.30
Best for Certified performance
Installation Under-sink
Filtration 4 stages
Output / flow 21 GPD (50 GPD membrane)
Tank 3.2-gallon storage tank
Certification NSF/ANSI 42, 53, 58
Filter interval 12-24 months
Key feature Air-gap faucet + tool-free cartridges
Warranty 1 year
View System
illi Water standard under-sink RO system with tank and faucet, NSF-certified components, 1-year warranty

Standard Reverse Osmosis System

$332.50
Best for Budget/value + customization
Installation Under-sink
Filtration 5-7 stages, customizable
Output / flow Moderate household output
Tank Storage tank
Certification NSF/ANSI-certified components
Filter interval 6-12 months
Key feature Designer faucet finishes + configurable stages
Warranty 1 year
View System
Hands washing vegetables under RO water tap

The Everyday Benefits of Reverse Osmosis

illi Water’s reverse osmosis systems for home improve your health, lifestyle, and overall quality of life. Our filter systems are easy on your pocket, give you 24/7 access to fresh water, make your food and beverages taste amazing, and remove water contaminants to keep you safe.

  • Improve Taste and Odour: Reverse osmosis effectively removes impurities such as sulphur and chlorine from your water, improving its taste and odour. Every sip of water, cup of coffee, and meal will always taste amazing.
  • Unlimited Filtered Drinking Water at Home: RO systems ensure an endless supply of clear, clean water from your tap. You don’t have to worry about running to the store to get water again.
  • Saves Money by Replacing Bottled Water: You won’t need to buy bottled water if you have an RO system at home. Save money, reduce your carbon footprint, and keep the environment green and fresh.
  • RO Removes 99% of Contaminants: RO filters remove up to 99% of hazardous contaminants, including lead, nitrates, and other pollutants.
Illi Water’s NSF, ANSI and WQA certified RO water filter installed in kitchen

Certified Performance You Can Verify


Certification varies by model, so we list it for each system:

• Pentair Reverse Osmosis System: NSF/ANSI 42, 53 and 58 certified

• Standard Reverse Osmosis System: built with NSF/ANSI-certified components

• Tankless Reverse Osmosis System: [certification to be confirmed]

• RO Hot & Cold Water Dispenser: CSA certified and RoHS compliant

NSF/ANSI Certified

Our filters are NSF/ANSI certified, which confirms they remove toxic impurities, providing you with safe, pure water.

Illi Water RO system removing impurities and contaminants like Heavy Metals, Chemicals, Organic Compounds, Microorganism from water.

What Contaminants Do Our RO Systems Remove?

Heavy Metals (e.g., Lead, Mercury, Arsenic): Old pipes can leach toxic metals into your water without any visible sign. Over time, exposure to heavy metals like lead and arsenic has been linked to serious health issues, including kidney and liver damage. Our system blocks these before they ever reach your tap.

  • Chemicals (e.g., Chlorine, Fluoride, Nitrates): Most tap water is treated with chlorine which does its job, but leaves behind a noticeable taste and smell. Nitrates and excess fluoride are also common. Our systems filter these out, making a real difference to how your water tastes and smells day to day.
  • Organic Compounds (e.g., Pesticides, Herbicides, Pharmaceuticals): Pesticides, herbicides, and other organic compounds often creep into water supplies, which can cause severe health problems, including brain and heart issues. Our filters remove these synthetic contaminants.
  • Microorganisms (e.g., Bacteria, Viruses, Cysts): Microorganisms can be present in even municipal water. Our systems have a fine semi-permeable membrane that removes these pathogens, giving you hygienic water.

With multiple filtration stages working together, our systems are designed to handle the contaminants most commonly found in home water supplies.

Happy family enjoying clean, safe drinking water from an Illi Water RO system

Why Choose illi Water RO System For Your Canadian Home?

illi Water is backed by Watermart a Canadian water filtration company with over 30 years of experience in the industry. That means when you buy an illi Water RO system, you're getting decades of expertise built into every unit.

Certification varies by model and is listed for each system above and on its product page, so you can check it before you buy. And because we stand behind what we sell, every system comes with a 1-year warranty and a 90-day satisfaction guarantee. If it's not right for your home, we'll make it right.

Clean, reliable water for your family that's what we're here for.

FAQs

×