

RO3 Filter Replacement Set (F.SET.RO3)
- Three stages of advanced carbon filtration and high-capacity reverse osmosis membrane.
- Any individual or family seeking the convenience and health of filtered water at the kitchen sink (or any sink).
- City water or well water*.
True Protection From Toxic Contaminants.
World-class EWS water filtration and performance for the removal of chlorine, chloramine, pesticides, THMs, VOCs, obesogens, lead, cysts, rust, silt, sediment, heavy metals, fluoride, and much more. The ESSENTIAL RO offers real protection against dangerous contaminants, while meeting your individual preferences for taste and mineral removal.
Made in the USA. Maintenance-free for up to 1 year before filter replacement. Just change them out and go!
Our Standards. Manufactured and Assembled in the USA.
All product and components are compliant for food and beverage contact and comply, meet or exceed all current and applicable standards without exception.
All EWS product has been independently tested by an accredited third-party laboratory to meet and/or exceed all relevant FDA, California State regulations, and NSF standards for all claims made regarding NSF/ANSI standards. All EWS product is No-Lead Compliant to California AB1953.

Blog posts
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Optimizing Sprinkler Spacing: Achieve Perfect Lawn Coverage and Water Efficiency
Read nowAt Big Frog Supply, we know a lush, green lawn starts with a well-designed irrigation system. If your sprinkler setup leaves you with stubborn brown patches or soggy, oversaturated zones, improper spacing might be the culprit. This updated guide simplifies sprinkler spacing, breaking down essential techniques, common pitfalls, and effective solutions. Learn how to optimize your sprinkler design for uniform watering, conserve water, and keep your landscape thriving year-round.
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Introducing the New Rain Bird G5 Solenoid: Reliable Performance Meets Easy Installation
Read nowDiscover the Rain Bird G5 Solenoid, engineered for optimal irrigation performance. Durable, universally compatible, and easy to install—perfect for commercial and residential landscapes.
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Unleashing Efficiency in Landscape Irrigation: The Rain Bird ESP-2WIRE Controller
In the evolving world of landscape management, efficiency is king. The Rain Bird ESP-2WIRE Controller emerges as a game-changer, merging advanced technology with user-friendly features to optimize irrigation practices. Let's dive into what makes the ESP-2WIRE a must-have for professionals aiming to achieve precision in irrigation without the complexities often associated with advanced systems.Read now