Water Filtration System Cost in Canada

How much does a water filtration system cost in Canada?

Water filtration and water treatment systems from Reliance Home Comfort® range from $24.99 to $47.99 per month to rent or from $1,250 to $4,000 to purchase, depending on the type and capacity of the system.

• Whole-home filtration systems: $31.99 to $36.99 per month to rent or $1,429 to $2,700 to purchase
• Drinking-water filtration systems: $24.99 to $44.99 per month to rent or $1,250 to $1,500 to purchase
• Water softeners: $29.99 to $47.99 per month to rent or $2,500 to $4,000 to purchase

The prices are straightforward. Choosing the right system requires a little more care.

A home with hard water needs a different solution from a home dealing with chlorine taste and odour. Water supplied by a private well may require a different approach from municipal water. Some homeowners want to improve water throughout the home, while others are focused specifically on water used for drinking and cooking.

That is why Reliance® starts by looking at the water itself, not simply recommending a product.

Start With a Free In-Home Water Test

A free in-home water test and water purification consultation is the easiest way to begin.

A Reliance Water Purification Advisor will ask about the concerns you have noticed and can conduct on-site testing to check water hardness and whether elevated levels of chlorine, iron, manganese or hydrogen sulfide are present.

If a concern falls outside the scope of immediate in-home testing, a water sample may be sent for additional laboratory testing.

Once the results are available, the Advisor can explain:

• What the test found
• Which type of system may address the identified water conditions
• Whether the system treats water throughout the home or at one tap
• Rental and purchase options
• Installation requirements
• Available bundle or existing-customer discounts

Book a free in-home water test and water purification consultation.

You can also read our guide to getting your water tested to learn what to expect during the appointment.

2026 Water Filtration System Prices

The table below shows current Reliance rental and purchase pricing for residential water filtration, purification and softening equipment.

Pricing is based on the 2026 Reliance customer price list. Product availability and installation requirements may vary by equipment, location and home.

Replacement filters for Reverse Osmosis systems and for Dual Drinking Filters are included in a Reliance rental and are shipped directly to your door each year.

Which Water Filtration System Is Right for Your Home?

The right system is the one that addresses the water conditions actually present in the home. It’s always best to start with a water test.

Here is how the available options differ.

Dual Drinking-Water Filter

If your main priority is the water your household drinks and cooks with, you may not need to treat every drop entering the home.

A dual drinking-water filter provides two-stage filtration at a selected tap, giving you a dedicated source of filtered water, reducing the impurities but leaving the minerals, in a convenient location such as the kitchen.

Price: $24.99 per month to rent or $1,250 to purchase.

Reverse Osmosis System

A reverse osmosis system is another option for households focused on drinking and cooking water. It is installed at a selected tap, commonly at the kitchen sink, rather than on the home’s main water line.

Water moves through multiple filtration stages before being stored. Because this is a point-of-use system, it does not treat the water supplied to every shower, fixture or appliance in the home. Water passes through multiple filtration stages before being stored in an under-sink reservoir, delivering purified, great-tasting drinking water on demand at the tap.

Price: $31.99 per month to rent or $1,484 to purchase.

Replacement filters are included with an RO rental and shipped directly to the customer each year. Customers who purchase their system are responsible for replacement-filter costs.

Reverse Osmosis System with Alkaline Filter

An alkaline filtration system starts with reverse osmosis and adds a mineralizer stage. After passing through the reverse osmosis system, the water flows through a mineralizer filter before reaching the tap.

This option may be worth discussing if you are interested in reverse osmosis filtration with an added mineralizer stage.

• Rental: $44.99 per month
• Purchase: $1,500

A mineralizer may also be added to an eligible existing Reliance reverse osmosis system for $12.99 per month to rent or $149 to purchase.

Replacement filters are included with an RO rental and shipped directly to the customer each year. Customers who purchase their system are responsible for replacement-filter costs.

Whole-Home Carbon Chlorine Filter

If chlorine taste or odour is noticeable at more than one tap, a system installed only at the kitchen sink may not address the full concern.

A whole-home carbon chlorine filter is installed on the main water line, allowing it to treat water before that water reaches faucets, showers and water-using appliances throughout the home.

Price: $31.99 per month to rent or $1,500 to purchase.

Catalytic Carbon Filters

Some municipal water supplies use chloramine rather than chlorine, while some homes may experience a sulphur or rotten-egg smell. These concerns may require a different type of carbon filtration.

Reliance offers two capacities:

Because chlorine, chloramine and hydrogen sulfide require different treatment approaches, a water test is the best way to confirm what is present before choosing a filter.

Chemical-Free Iron Filters

Yellow, brown or black staining can be frustrating, especially when it appears on sinks, toilets, laundry or water-using appliances. Metallic taste or odour may also suggest that iron or manganese is present.

However, appearance and taste alone are not enough to identify the cause. Testing can help determine whether iron, manganese or another water condition is responsible.

Reliance offers:

A Water Purification Advisor can explain which configuration may be appropriate based on the test results and the needs of the home.

Whole-Home Ultraviolet System

An ultraviolet water treatment system uses UV light as part of the treatment process. It may be considered for certain private-well or other water-treatment applications, depending on the conditions identified.

Ultraviolet water treatment systems use UV light to deactivate select bacteria and other microorganisms as part of the water treatment process. Depending on water quality conditions and the results of water testing, UV treatment may be recommended for private wells and other applications where microbial impurities are a concern.

The AQUV-8R1 whole-home ultraviolet system is available for purchase only for $1,429.

An ultraviolet system may be one part of a broader setup rather than the only treatment required. A water assessment can help determine whether pre-filtration or another system should also be considered.

Water Softeners

If soap does not lather well, spots keep appearing on glassware or scale builds up around faucets and appliances, hard water may be contributing to the problem.

A water softener reduces hardness minerals throughout the home. Reliance offers several configurations because water hardness and household demand are not the same in every home.

A larger household does not automatically require the largest system. Water hardness and expected household use should both be considered before capacity is selected.

For a closer look at capacity, household water use and renting versus buying, visit the Water Softener Pricing Guide.

Water Softener with Chlorine Filter Systems

Some homes have more than one water concern. For example, the water may be hard while chlorine taste or odour is also noticeable.

A water softener with chlorine system combines water softening and chlorine reduction.

A free in-home water test can help determine whether a combined system or separate treatment options are more appropriate for the home.

Whole-Home Filtration vs. Drinking-Water Filtration

A helpful way to narrow the options is to ask where the concern is occurring.

If the issue affects showers, laundry, fixtures or appliances throughout the home, a whole-home system may be appropriate. If the priority is filtered water for drinking and cooking, a system installed at one tap may be enough.

Some households may benefit from both. A water softener may reduce hardness minerals throughout the home, while a reverse osmosis system treats water at the kitchen tap for drinking and cooking.

How Much Does a Whole-Home Water Filtration System Cost?

Reliance whole-home water filtration systems range from $31.99 to $36.99 per month to rent or from $1,429 to $2,700 to purchase.

This range includes:

• Whole-home carbon filtration
• Catalytic carbon filtration
• Single-tank and dual-tank iron filtration
• The purchase-only AQUV-8R1 ultraviolet water treatment system

Water softeners are also whole-home water treatment systems, but their pricing is listed separately because they are designed specifically to reduce hardness minerals.

Start With the Water, Not the Equipment

Choosing water treatment equipment from a price list alone is a little like choosing a furnace without knowing the heating needs of the home. The equipment needs to match the conditions it is expected to address.

A free in-home water test can help answer:

• Is the water hard?
• Is chlorine affecting its taste or odour?
• Are iron or manganese contributing to staining?
• Is hydrogen sulfide present?
• Is treatment needed throughout the home or at one tap?
• Would one system be enough, or should more than one option be considered?

Book a free in-home water test and consultation.

Water Softener and Reverse Osmosis Bundle Pricing

A household may want to reduce hardness minerals throughout the home while also treating drinking and cooking water at a selected tap.

Customers who rent an eligible water softener and reverse osmosis system together receive a $5 monthly bundle discount.

Existing customers receive a $5 monthly discount on each Water Purification product in a bundle, plus an additional $5 bundle discount, for a total combined rental discount of $15 per month. New customers become VIP customers with their first Water Purification rental product, making the second bundle product eligible for the $5 VIP discount. Combined with the $5 bundle discount, this provides a total combined rental discount of $10 per month.

What Affects Water Filtration System Cost?

The Water Condition Being Addressed

A carbon filter, iron filter, water softener and reverse osmosis system each perform different functions.

Testing helps identify which type of equipment is relevant before pricing options are compared.

Whole-Home or Point-of-Use Treatment

Whole-home equipment treats water at the main water line. Point-of-use equipment treats water at one location, such as a kitchen tap.

Whole-home systems are generally larger and may have different installation requirements from a system installed beneath one sink.

Water Source

Municipal and private well water may present different water conditions.

A water assessment can identify what is present rather than relying only on visible staining, taste or odour.

Learn more about city and well-water supplies here.

System Type and Capacity

The recommended capacity depends on the water conditions identified and the expected household demand.

A larger household does not automatically require one specific system. The condition of the water also matters.

Installation Requirements

The existing plumbing configuration, equipment location and work required to connect the system can affect the final quote.

Any work outside the applicable standard installation should be identified before installation begins.

Whether More Than One System Is Needed

A home may have more than one water concern.

For example, a water softener may be paired with a reverse osmosis system when the household wants whole-home hardness reduction and filtered water at a selected drinking-water tap.

Should I Rent or Buy a Water Filtration System?

The better option depends on how the homeowner prefers to pay for and manage the equipment.

Before deciding, compare:

• The specific system being recommended
• Monthly rental price
• Purchase price
• Installation requirements
• Applicable warranty
• Rental service inclusions
• Replacement-filter requirements
• Bundle or existing-customer discounts

A Water Purification Advisor can explain both options based on the system recommended for the home.

Get a Free Water Test Before Choosing a System

You do not need to diagnose your water or choose a system on your own.

During a free in-home water test and consultation, a Reliance Water Purification Advisor can:

• Review the concerns you have noticed
• Confirm whether the home uses municipal water or a private well
• Conduct applicable on-site water tests
• Explain the test results
• Recommend an appropriate water purification option
• Review rental and purchase pricing
• Explain available bundle or existing-customer discounts
• Discuss applicable installation requirements

If the concern is outside the scope of immediate in-home testing, a water sample may be sent for additional laboratory testing.

Book your free in-home water test and water purification consultation.

Read The Importance of Water Quality in Your Home and How to Get Your Water Tested to learn more about the testing process.

Water Filtration System Cost FAQs

How much does a whole-home water filtration system cost?

Reliance whole-home water filtration systems range from $31.99 to $36.99 per month to rent or from $1,429 to $2,700 to purchase. Pricing depends on the type and capacity of the selected system.

How much does it cost to install a whole-home water filter?

Installation cost depends on the type of filtration system, the existing plumbing configuration and whether the home requires work outside the applicable standard installation. An in-home assessment is required to confirm the installation requirements and final quote.

Can I rent a whole-home water filtration system?

Yes. Eligible Reliance whole-home filtration systems are available to rent from $31.99 to $36.99 per month. Availability may vary by product and service area.

How much does a reverse osmosis system cost?

A Reliance reverse osmosis system costs $31.99 to $44.99 per month to rent or $1,484.09 to purchase.

Purchased systems also require replacement filters. Current pricing is $178 for the Years 1 and 2 replacement filters and $289 for the Year 3 replacement filters.

Is a water softener the same as a whole-home water filter?

No. A water softener reduces hardness minerals that contribute to scale buildup. A whole-home water filter addresses other specific water concerns, such as chlorine taste and odour or iron and manganese.

A home may benefit from both when more than one water condition is present.

What is the difference between whole-home filtration and reverse osmosis?

A whole-home filtration system treats water at the main water line before it travels throughout the home.

A reverse osmosis system is generally installed at a selected tap to treat water used for drinking and cooking.

Does well-water filtration cost more?

Using a private well does not automatically determine the cost. Pricing depends on the water conditions identified and the type or combination of systems recommended.

Can a whole-home filter and water softener be used together?

Yes. A whole-home filter and water softener may be used together when the home has more than one water concern.

For example, one system may address chlorine or iron while the water softener reduces hardness minerals.

How do I know which water filtration system I need?

Start with a water test.

The correct system should be selected based on the home’s water source, the water conditions identified and the needs of the household.

Is a free water test available before I choose a filtration system?

Yes. Reliance offers a free in-home water test and water purification consultation.

A Water Purification Advisor will review your concerns and may conduct on-site testing for water hardness and elevated levels of chlorine, iron, manganese and hydrogen sulfide. If the concern requires more detailed testing, a water sample may be sent for laboratory testing.

Are rental discounts available to existing Reliance customers?

Customers with an existing Reliance rental or protection plan receive an additional $5 monthly discount on each eligible water purification rental.

Eligible product bundles also include a $5 monthly bundle discount.