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Reduce more contaminants with ProOne® Water Filters

Most Tested. Most Trusted.

Welcome to the new home of ProOne®. This re-branding strategy reflects our focus on expanding the iconic ProOne® brand of water filters as we introduce new proformance driven filter technologies and quality products. ProOne’s ownership, staff, and location have not changed. ProOne is not affiliated with any other company and continues to be operated by its founder and chief innovator, Steven Steinway. For more information regarding this announcement, please send your inquiry to support@prooneusa.com.


ProOne® Water Filters offers affordable water filtration systems to help improve the quality of your water. Our products are uniquely engineered to help reduce even the latest undesirable contaminants and water pollutants. Visit our lab reports for details on all ProOne® filters.

There’s a ProOne® water filter for you!

Customer Testimonials

Gravity Systems

Our Gravity Systems are ideal for countertop use and are simple to set up. They require no electricity or plumbing to ensure easy use. Just pour water into the upper container and allow it to percolate through the filter(s) and into the lower storage container. Available in 5 different sizes. Includes ProOne® G2.0 ceramic gravity filter(s). Recommended for daily use, travel, office, outdoor or have on hand for preparedness or emergency use.


ProOne is pleased to announce our stainless gravity systems are now COMPLETELY NSF CERTIFIED, including the ProOne G2.0 series filter and stainless steel gravity housing.

Gravity Systems

Pressure Systems

From point-of-use to point-of-entry, ProOne® offers many styles of shower, refrigerator, counter top, under counter and whole house water filtration systems. Featuring ProOne®/Coldstream and ProMaxTM filter technologies.

Pressurized Systems

Why Choose ProOne®?

Dedication to innovation, extensive testing, and exceptional customer service is our commitment to you!


Backed by quality you can taste, We at ProOne® understand the importance of providing complete and transparent information to help assist you in your decision-making process


Did you know that nearly half of tap water in the US is contaminated with PFAS, also known as Fluorinated Organic Acids or “forever chemicals”. It’s a growing concern across the country. PFAS is a group of contaminants including:

Perfluorobutane Sulfonate (PFBS)
Perfluorodecanoic Acid (PFDA)
Perfluorohexanoic Acid (PFHxA)
Perfluorononanoic Acid (PFNA)
Perfluorooctanoic Acid (PFOA) Surrogate (C8)

Perfluorooctane Sulfonate (PFOS)
Perfluorohexane Sulfonate (PFSxS)
Polytetrafluoroethylene (PTFE)
Fluorotelomer alcohol 8:2 (PTOH)

While PFOS and PFOA are perhaps the more common contaminants, we’ve tested for all of the above PFAS contaminants.


ProOne offers several solutions for the reduction of PFAS contaminants including gravity and pressurized water filtration systems.

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