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The P1 Advantage

Pressure & Flow

Designed and tested to perform under high flow rates while maintaining strong filtration performance.

Materials & Technology

The P1 contains four world-class filtration media that work together to meet or exceed industry standards.

Compact Design

Less than 14 inches in height, the P1 fits seamlessly under almost any kitchen sink.

Installation

Detailed installation guides give you the ability to seamlessly install your filter in less than 15 minutes.

Cellular Hydration

Designed to retain the essential minerals your body and cells need to stay properly hydrated.

User-Friendly

The P1 combines smart design with a user-friendly experience to ensure seamless operation throughout your filter’s lifetime.

Low Maintenance

Designed for convenience, P1 cartridge replacements can last up to two years or 60,000 liters.

A glowing schematic of the P1 under-sink filter cartridge: a clear cylindrical housing connected to a kitchen tap, with luminous blue and red water streams spiraling through it.

Performance & Taste Guarantee

We’re so confident you’ll notice a difference in your water that if your system does not perform as intended, you can return it within 30 days of purchase.

Drinking Water Reduction Claims

Purely Benefits

Pregnant woman & children

The safest water matters most during pregnancy and for growing children.

Cost Savings

Cleaner water at home — without the ongoing cost of bottled water.

Reduced Microplastics

Captures the microplastics that ordinary filters leave behind.

Real people. Real results.

A community around better water and better health.

Better water for every part of your kitchen.

Cellular hydration

The P1 retains essential minerals your body needs. These minerals improve the taste of your water and act as electrolytes that help your cells absorb and use water more effectively.

Coffee

Reducing chemicals like chlorine and disinfection byproducts can significantly improve the taste of your coffee. At the same time, minerals play a crucial role in extracting flavor from the bean, which is why better coffee starts with better water.

Boiling and cooking

Boiling does not reduce all contaminants. In some cases, it can increase the concentration of contaminants like lead as water evaporates and the total volume of water is reduced, which matters for soups, pasta, tea, and oatmeal.

Produce

We wash produce to remove pesticides, dirt, and cross-contamination, but the water we rinse with matters too. The P1 helps create a cleaner rinsing process so you are not adding excess contaminants back onto your food.

Pets

If you do not drink from your tap, your pet probably should not either. Chlorine and other harmful byproducts can affect the taste of their water and can contribute to long-term stress on certain organs, especially in smaller, more sensitive dogs.

Install it Once.
Feel it Everyday.

01.

Purchase your P1

Get everything you need to protect the water throughout your home, from drinking and cooking to bathing, washing, and daily use.

02.

Install your filter

Connect the P1 to the cold water line under your sink for a simple plumber-free install, typically taking 5 to 10 minutes.

03.

Activate on the app

Connect your P1 to the Purely app to activate your system, track capacity in real time, and start monitoring your water quality from your phone.

04.

Enjoy and monitor

Continue using your water like normal, while receiving filter life updates and replacement reminders directly from your phone.

FO | Tested Against 80+ Contaminants

Our FO platform is the foundation behind every Purely system and has been tested for the reduction of 80+ contaminants.

Chlorine

A disinfectant added to almost all municipal tap water to kill germs.

Lead

A heavy metal that can leach from older pipes, solder, and brass fittings.

Microplastics

Plastic particles smaller than 5 mm that shed from packaging, textiles, and weathered debris.

Pharmaceuticals

Trace amounts of medications that slip past conventional water treatment.

THMs & HAAs

A family of byproducts that form when chlorine reacts with organic matter in source water.

Chloramine

A longer-lasting disinfectant made by mixing chlorine with ammonia.

Turbidity

Cloudiness caused by suspended particles like silt, organic matter, and microbes.

Copper

A metal that can leach into water from copper plumbing, especially when water sits overnight.

Not all tested contaminants are listed; view the Performance Data Sheet or contact us. This is not medical advice, may contain mistakes, and does not represent complete system performance. For questions or source details, please contact us.

A hand holding an iPhone displaying the Purely Water Report, with floating panels for Lead, Turbidity, and Potassium readings

Understand what’s really in your water.

Proud to build Canada’s first public water database for homeowners, helping you access your local water results and understand your home’s water profile in detail.

Exploded view of the P1 cartridge's four filtration layers — a fine mesh on top, a dark felt pad, copper-toned beads, and white ceramic spheres — hovering above the cartridge body on a deep navy gradient.

World Class Materials

Our P1 cartridge combines four world-class filtration materials into one advanced cartridge. Four unique media sourced from three different countries.

Smaller System.
Smarter Installation.

Detailed installation guides assist you every step of the way, giving you the option to install the P1 yourself in less than 15 minutes.

A P1 replacement cartridge being lifted into the under-sink housing on a black background, with the housing's OUT port visible above.

Replacements in less than two minutes.

Replacing your P1 cartridge is simple. Our guided replacement process helps you swap your filter in less than two minutes without tools or complicated steps.

Rated 4.8 / 51,200+ reviews

Hear From Homeowners

Get Started with P1

Explore the different ownership plans for the P1 drinking filtration system.

Purely Drinking Protection

4.8 · 1,284 reviews

P1 Under-Sink

From $295Affirm financing availableAccepted payment methods: Amex, Apple Pay, Google Pay, Mastercard, Shop Pay, Visa
  • Clean Water From Your Kitchen Faucet
  • Reduces Lead, Chlorine, PFAS, VOC’s
  • User Friendly Installation
  • No Flow Reduction
  • Filter Tracking with our Mobile Application
  • Up to 2 Year Capacity
  • FO Technology
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Technical Specifications

Browse the key details behind the P1 system to confirm the right fit for your home, your needs, and the way you use water every day.

Purely P1 Under-Sink Filtration System
13 in
3.5 in
Type
Four-stage under-sink filtration system equipped with Fiber Optimization Technology
Capacity
60,000 L
Replacement Cadence
Up to 2 years under normal household use
Flow Rate
2 gpm at 60 psi (no reduction in flow)
Max Pressure
125 psi
Temperature Range
35 to 100°F (1.7 to 37.8°C)
Plumbing Connection Size
3/8 in (Compatible with the vast majority of Canadian homes)
Dimensions
13 in × 3.5 in

FAQ

Need help choosing the right system or protection plan for your home? Our water experts are here to help. Our offices can be reached between 9:00 AM - 8:00 PM EST.

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