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.
Protecting the water that touches your skin and hair every day while delivering a cleaner, softer, better-balanced shower experience.
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.
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.
Sleek, minimal, and thoughtfully designed to enhance the look of any shower with a clean, modern finish.
Detailed installation guides give you the ability to seamlessly install your filter in less than 2 minutes.
By reducing chlorine and heavy metals at the source, the S1 helps create a cleaner shower foundation that supports your skin’s natural moisture barrier.
The S1 combines smart design with a user-friendly experience to ensure seamless operation throughout your filter’s lifetime.
Designed for convenience, S1 cartridge replacements can last up to 1 year or 45,000 liters.
Our systems use AI to estimate your filter's remaining capacity by cross-referencing your local water quality with our tested performance standards.
Turn on automated replacements and never worry about forgetting your filter change again.
In select regions, access your area's detailed water quality report by simply entering your postal code.
Get access to our digital hub of water education, filtration insights, and industry knowledge.
The mobile app helps ensure you never forget to maintain or change your filter, with reminders and support when you need it.

We’re so confident you’ll notice a difference in your shower experience that if your S1 does not perform as intended, you can return it within 30 days of purchase.
Shower water can affect the look and longevity of color-treated hair, especially lighter shades like blond. Harsh water exposure can contribute to fading, dullness, and unwanted discoloration over time.
Shower water that leaves the skin dry or irritated can make sensitive skin feel worse, especially for people with eczema-prone or psoriasis-prone skin.
The water you shower with affects how your hair feels after every wash. Harsh or unbalanced water can leave hair feeling dry, rough, frizzy, or harder to manage.
Your skin is exposed to shower water every day. Water that disrupts the skin’s natural balance can contribute to dryness, tightness, and irritation.
Get everything you need to protect the water you shower in, helping support softer-feeling skin, smoother hair, and a cleaner daily routine.
Attach the S1 directly to your shower in minutes with a simple, tool-free installation designed to fit seamlessly into your existing setup.
Connect your S1 to the Purely app to activate your system, track capacity in real time, and start monitoring your water quality from your phone.
Continue using your water like normal, while receiving filter life updates and replacement reminders directly from your phone.

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.
Upgrade your shower in minutes with a simple, tool-free installation. The S1 connects directly to your shower hose, making setup fast, clean, and easy to follow.

Fresh filtered water is easy to maintain. When it’s time to replace your cartridge, simply open the handle, swap the cartridge, and get back to your regular shower routine.
Explore the different ownership plans for the S1 Shower Filter.
S1 Protection Bundle



Browse the key details behind the S1 system to confirm the right fit for your home, your needs, and the way you use water every day.

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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