Water Filters

Protection Plans

Protection Plans give you a complete ownership experience — keeping your system maintained on schedule, performing optimally, and protected under lifetime warranty.

4-Stage Filtration

The P1 brings 4 media together in one compact system.

Mobile App

Everything you need to manage your water, all in one digital experience.

Fiber Filtration

A new level of innovation and efficiency to your home’s water.

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.

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Learn about your tap water.

We built a tool to help you understand what’s in your tap water, what it means, and how to choose the right treatment for your home.

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A community around better water and better health.

The Science Behind Better Water

All our filters are built using our proprietary Fiber Optimization Technology (FO).

FO uses fibers instead of synthetic polymers like polyethylene.

Fiber increases the available surface area, enabling cleaner and more consistent water.

Chlorine

99%

Refer to performance data sheet.

VOCs

99%

Refer to performance data sheet.

Lead

98.8%

Refer to performance data sheet.

PFOA / PFOS*

98%

Refer to performance data sheet.

Cadmium

99.2%

Refer to performance data sheet.

Performance Money Back GuaranteeTaste GuaranteeOdor Free30-Day Risk-Free Trial

4-Stage Filtration

The P1 brings four high-performance filtration media together in a single multi-stage cartridge.

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Automatic Replacements

Join a Protection Plan and enjoy free automated replacements, delivered before your filter's capacity is reached.

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Made with
Certified Materials

Built with certified materials from trusted suppliers. Material certifications do not apply to the complete system.

Rated 4.8 / 51,200+ reviews

Hear From Homeowners

Our Promise

30-Day Risk-Free Trial

Love it or get your money back.

30 Day

Money-Back Guarantee

Use the P1 for up to 30 days from your purchase date. If it’s not the right fit, return it within 30 days at no cost. See Policy

Technology

FO Technology

FO Technology uses fibre instead of polyethylene, binding the carbon media while creating controlled flow pathways that improve contact, efficiency, and performance.

5x

Up to 5x the surface area, compared to our previous carbon models.

300M+

Tested against over 300 million litres of real-world water conditions.

1.5x

Up to 2x more efficiency of the filtration matrix compared to previous carbon models.

FO vs. RO: Smarter Water, Less Waste

CategoryFOFiber OptimizationROReverse Osmosis
MineralsRetains mineralsRemoves minerals
Water TypeMineral-balancedDemineralized
MaintenanceUp to 1x/yearSeveral times/year
EfficiencyFibre-basedMembrane-based
WastewaterNo wastewaterCreates wastewater
SustainabilityLess material, less wasteMore parts, more waste
InstallationUnder 15 minAround 1 hour
Best ForCity waterWell/high-risk water
PressureMain faucet compatibleSeparate faucet needed
Size1 cartridge3–4 components

Consistency

Fibre helps reduce channeling by creating a more consistent filtration structure, allowing water to make better contact with the media instead of passing through uneven gaps.

Uniformity

Fibre provides a more uniform structure, helping water flow more evenly through the cartridge and improving contact across the entire filter.

Efficiency

FO Technology increases the cartridge's available surface area and helps reduce internal media waste, allowing more of the filter to be actively used throughout its lifetime.

From the Blog

FAQ

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.

Call us