"Definitely a must-have in every home. Efficient, cost-effective, and better for the planet. No brainer."
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P1 Under-Sink
CA$259.00
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P1+ Defender Series Replacement Cartridge
Whole House Water Filtration System
CA$699.00
The P1+ Defender Series installs directly at the main water line of your home. Using advanced fibre technology, it's designed to prevent channeling, meaning every drop is filtered evenly, from the shower to the kitchen tap. Enjoy consistent, clean water without sacrificing pressure. Each filter stage has a capacity of 400,000L with a lifespan of up to 2 years, based on household size.
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Reduces up to 98% of over 80+ common tap water contaminants.
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New Fiber Technology offers smarter and more consistent filtration.
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Independently tested filter media designed to meet world-class certification benchmarks.
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Low maintenance. Lasts up to two years before needing replacement.
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Risk free 30-day trial.
Note: Monthly prices will be calculated at checkout after you select Affirm.
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30 Day
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Free Trial
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Benefits
- Ultra-compact whole-house filtration
- Better water for drinking, cooking, bathing and washing
- Improves the taste of coffee & tea
- Designed to be gentle on sensitive skin and scalp
- Helps maintain the vibrancy of colour treated hair
- Reduces chlorine and heavy metals commonly found in municipal water
- Helps reduce colour-fading of clothes over time
- A sustainable choice, reduces the need for plastic bottles
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How it Works
- Shut off your main water line and open a few taps to release pressure
- A certified plumber installs the system with a bypass
- Reopen the main line and run 2–3 taps for 60 seconds
- Now enjoy filtered water at every tap
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Box Contents
- P1+ Filter cartridge
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Specifications
- Type: Modular whole-home filtration system with Purely Fiber Technology
- Capacity: 400,000 L ; replace every 2 years
- Household Size: 1-2 people
- Peak Flow: Up to 20 GPM
- Max Pressure: 120 PSI
- Temp Range: 40–90°F (≈4–32°C)
- Dimensions:
Height: 25.5", Width: 4.75", Depth: 4.75"
Trusted by Leaders
Purely partners with leading creators, businesses, and organizations to advance water awareness, empower communities, and deliver innovative filtration solutions.
Natalia Bielecki
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Katherine Garbarino
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Showering
With chlorine and impurities removed, your shower leaves you hydrated, not stripped.
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Clothing
Chlorine fades colors. By effectively removing it, our filter helps protect your fabrics.
Drinking
Enjoy clean, great-tasting water, right from your tap. Our filter is designed to effectively reduce over 100 common impurities.
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Coffee
Better water means better flavour. Smoother, richer, and more balanced taste.
Fruits & Vegetables
Rinse away contaminants and preserve freshness with cleaner water.
Pets
Give your pets the same quality water you drink, pure safe, and healthy.
Why Fiber Technology?
Our filtration technology delivers stronger performance, better pressure, and longer life than traditional filters. Here’s why:
Beyond Granules
Most filters rely on loose granules. Over time, water carves channels through them, causing uneven filtration and a shorter lifespan.
A Smarter Structure
Our filter uses a solid, fibrous media with a high-density surface area and thousands of micropores. This structure guides water evenly through the filter for smoother, consistent, and more effective purification.
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Compact Footprint
Our advanced fiber technology is incredibly efficient, enabling a much more compact filter. The P1+ fits easily into tight spaces, making it ideal for apartments and condos without compromising performance.
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Full Flow, Instantly
The fiber membrane is designed to be highly permeable. This allows water to flow through quickly, providing consistent, high-flow water and strong, uninterrupted pressure to every faucet in your home.
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A More Sustainable Choice
The immense surface area of our fiber technology means it can do more with less. This high-efficiency design results in less material waste, making it a smarter, more sustainable choice for your home.
Which P1+ System is Right For You?
Find your household size for the perfect system. We recommend choosing based on the number of people living in your household for the most accurate filter lifespan.
Model
Capacity
Recommended Household
Typically For
Replacement Cadence
P1+ 1-Stage
400,000L
1-2 People
Apartments, Condos, Small Homes
Every 2 Years
P1+ 2-Stage
800,000L
3-4 People
Family Homes, Town-Houses
Every 2 Years
P1+ 4-Stage
1,600,000L
5+ People
Large Family Homes
Every 2-3 Years
We base our replacement recommendations on an average household water use of 250L per day, which includes all common uses like bathing, dishwashing, and showering.
What Our Customers Are Saying
Real stories from people who've experienced cleaner water, better health, and peace of mind.
Rhonda Massad
Owner of West Island News
Natalia Bielecki
Office Manager at Clinique Ophtalmo MTL
"Water is a huge part of my life. I use the filtration system every day definitely a must-have for everyone."
Katherine Garbarino
Owner of KGMTL
"I have one in my kitchen and bathroom sink. It’s an essential part of my wellness routine."
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Melanie McKell
Owner of extensions MTL
"Unfiltered water can seriously affect the quality of our hair and skin. I definitely recommend a Purely filter for both drinking and showering."
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Angela Lucia
Owner at Coiffure Blunt
"Our entire salon is filtered, and our clients have definitely noticed a difference."
Ivana Gentile
Award Winning Stylist & Colorist
"Highly recommended for haircare. Clean water is the foundation of strong, healthy hair."
Francesco Feudale
President at Plomberie Urgence Montréal (PUM)
"Great systems happy to be working with Purely as an installation partner."
Plug & Play Effortlessly
Replacements are simple. Each cylinder twists off in under a minute, no tools, no mess. Just consistent, filtered water.
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Consistent Filtration. Our advanced fiber technology is designed for dependable performance, providing consistent filtration from the first drop to the last.
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Expanded Surface Area. The unique structure of our fiber media provides up to 3x greater surface area than conventional granular carbon, enabling more efficient and effective filtration.
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Superior Impurity Reduction. Our filters are intelligently designed to target and reduce a wide range of common impurities, such as chlorine, VOC’s, pesticides and heavy metals, with high efficiency.
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Compact & Long-Lasting. Our filters are designed to be more compact while offering double the capacity. This means you get clean, great-tasting water with fewer filter replacements.
See For Yourself
Compare Fiber Technology to other alternatives
ACF
Others
GAC/PAC Filters
Size/Form Factor
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Replacement Longevity
Adsorption Speed
Environmental Impact
Filtration Consistency
Maintenance / Clogging
Surface Area
A checkmark indicates Purely outperforms in that category. Results are based on third-party testing and published data comparing Activated Carbon Fiber (ACF) to conventional carbon filters.
Frequently Bought Together
S1 Shower-Handle Bundle
CA$189.00
CA$238.00
S2 Shower-Filter
CA$110.00
30 Days of Purely,
Risk-Free.
Experience Purely risk-free for 30 days. If you don’t taste the difference, we’ll give you a full refund no questions asked.
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