Reverse Osmosis (RO) 10 Stage Under Sink Structured Water System

Advanced Filtration. Thoughtful Remineralization. Natural Action Structured Flow.

Filter First. Remineralize. Structure Last.

Better drinking water starts with understanding what is in your water—and choosing the right treatment approach.

The Natural Action 10-Stage Reverse Osmosis System brings together three complementary technologies in one under-sink drinking-water solution: multi-stage filtration, remineralization, and Natural Action's passive vortex-inspired water-structuring technology.

Designed for everyday drinking, cooking, coffee, and tea, the system includes a dedicated drinking-water faucet and storage tank.

Rather than relying on broad purification promises, Natural Action focuses on a complete water-treatment approach in which each component serves a distinct purpose.

Better Water Starts with Better Engineering.

Why Choose Natural Action's 10-Stage RO System?

• 10-Stage Integrated System — Combines filtration, remineralization, and a final structuring stage.

• Reverse Osmosis Filtration — Uses a semipermeable membrane to reduce dissolved substances, subject to verified system performance.

• Remineralization — Includes post-filtration mineral-treatment stages.

• Natural Action Structured Flow — Guides water through an engineered vortex-inspired flow pathway after treatment.

• Dedicated Drinking-Water Faucet — Provides a convenient point of use at the kitchen sink.

• Storage Tank Included — Stores treated water for dispensing through the dedicated faucet.

• 100 GPD RO Membrane — Nominal membrane capacity under specified operating conditions.

• Replaceable Filtration Components — Designed for ongoing service and maintenance.

• Complete Under-Sink Solution — Integrates complementary treatment stages in one installation.

How the 10 Stages Work

Stages 1–7 — Multi-Stage Filtration

The first seven stages are dedicated to water filtration, including reverse osmosis.

The system uses sediment and carbon filtration components along with an RO membrane.

Reverse osmosis works by moving water through a semipermeable membrane that separates a portion of dissolved substances from the treated-water stream.

The actual reduction of any particular contaminant depends on the membrane, complete system design, feed-water conditions, operating pressure, and maintenance.

The benefit: A multi-stage filtration approach designed to address water-quality concerns before the water reaches the final treatment stages.

Stages 8–9 — Remineralization

After reverse osmosis, water passes through two mineral-treatment stages.

These stages are intended to reintroduce minerals and influence the taste and mineral characteristics of the treated water.

The final mineral composition depends on the media installed and the water passing through the system.

The benefit: Mineral treatment after reverse osmosis as part of a complete drinking-water system.

Stage 10 — Natural Action Structured Water

The final stage incorporates Natural Action's vortex-inspired flow-form technology.

Water moves through an engineered pathway designed around controlled flow and vortex motion.

This stage operates separately from the contaminant-removal process.

It does not filter, disinfect, remove dissolved substances, or replace the reverse osmosis membrane.

The benefit: Natural Action's distinctive passive water-flow approach as the final step before the drinking-water faucet.

Filter First. Remineralize. Structure Last.

What Can Reverse Osmosis Filtration Do?

Reverse osmosis is a well-established water-treatment technology used to reduce many dissolved substances.

Depending on the specific membrane and complete system, RO technology may be suitable for addressing certain dissolved salts, metals, and other water-quality concerns.

However, not every reverse osmosis system has the same verified contaminant-reduction performance.

Natural Action does not claim a universal removal percentage for this system.

Contaminant-specific performance should be evaluated using the system's applicable manufacturer specifications or independent test documentation.

For customers with particular concerns—such as lead, arsenic, fluoride, nitrate, or other dissolved substances—we recommend reviewing a water analysis and confirming the system's documented reduction capabilities before purchasing.

Designed for Everyday Drinking Water

The Natural Action 10-Stage System is designed for use at a dedicated drinking-water faucet.

Common uses include:

• Drinking water

• Coffee and tea preparation

• Cooking

• Filling reusable water bottles

• General kitchen drinking-water needs

This is a point-of-use system rather than a whole-home filtration system.

Product Specifications

Feature	Details
Product	Natural Action Reverse Osmosis 10-Stage Under-Sink Structured Water System
Installation	Under sink
Total Stages	10
Filtration	Stages 1–7
Remineralization	Stages 8–9
Water Structuring	Stage 10
RO Membrane	100 GPD nominal rating
RO Assembly Dimensions	12" L × 9" W × 16" H
Storage Tank Dimensions	10" diameter × 16" H
Storage Tank	Included
Dedicated Faucet	Included
Listed Shipping Weight	Approximately 25 lb
Installation Connections	Cold-water supply, drain connection, dedicated faucet
Routine Filter Service	Approximately every 12 months, depending on conditions
RO Membrane Service	Approximately every 24–36 months, depending on conditions
Water Structuring	Passive vortex-inspired flow-form stage

The 100 GPD rating describes nominal membrane production under specified conditions, not a guaranteed daily output. Actual production varies with incoming water pressure, temperature, dissolved solids, and membrane condition.

Installation

The system is designed for installation beneath a kitchen sink.

Installation involves connecting the equipment to an appropriate cold-water supply, installing the drain connection, positioning the storage tank, and mounting the dedicated drinking-water faucet.

Before Installation

Confirm:

• Adequate cabinet space for the RO assembly and storage tank.

• Clearance for tubing, connections, and future filter replacement.

• Compatible incoming water pressure and water quality.

• A suitable location for the dedicated faucet.

• An appropriate drain connection.

Professional installation is recommended if you are unfamiliar with under-sink plumbing or reverse osmosis equipment.

Follow the supplied installation and commissioning instructions.

Filter Replacement and Maintenance

Maintaining the filtration components is important for consistent operation.

Annual Replacement Filter Pack

The Natural Action replacement pack includes:

• 5-micron sediment filter

• Carbon block (CTO) filter

• 1-micron filter with alkaline additive

• Remineralization pack

Suggested replacement: Approximately every 12 months, depending on water quality, use, and performance.

Shop RO Replacement Filter Pack

Reverse Osmosis Membrane

The system uses a 100 GPD nominal RO membrane.

Suggested replacement: Approximately every 24–36 months, depending on feed-water conditions and system performance.

Shop RO Replacement Membrane

Follow the manufacturer's maintenance instructions. A filter's service interval is not a guarantee of its effective life under every water condition.

Why Filtration and Structuring Are Different

Natural Action believes that choosing the right water solution starts by understanding the role of each technology.

Filtration addresses substances in water through a specific contaminant-reduction process.

Remineralization adds a mineral-treatment stage after filtration.

Water structuring refers to Natural Action's nature-inspired approach to guiding water through engineered flow pathways.

Structuring is not a substitute for filtration or disinfection, and its proposed effects on water properties should not be confused with established contaminant-removal performance.

Explore Related Natural Action Systems

Already Have Reverse Osmosis?

The Post-RO Structured Water System is designed for compatible existing RO installations.

Prefer Carbon-Block Filtration?

Explore the Under Sink Structured Water System with Filtration, which pairs Multipure Aquaversa filtration with Natural Action's HD-9 technology.

Want Structured Water Throughout Your Home?

Explore the Whole Home Structured Water System, designed for compatible main-line plumbing.

Whole-home structuring does not replace any required contaminant treatment.

Frequently Asked Questions

1. What is the Natural Action 10-Stage Reverse Osmosis System?

It is an under-sink drinking-water system combining multi-stage reverse osmosis filtration, two remineralization stages, and a final Natural Action vortex-inspired water-structuring stage. A storage tank and dedicated drinking-water faucet are included.

2. How do the 10 stages work?

Stages 1–7 provide filtration, including reverse osmosis. Stages 8–9 provide mineral treatment after filtration. Stage 10 guides the treated water through Natural Action's passive vortex-inspired flow-form pathway.

3. Does this system remove 99% of contaminants?

Natural Action does not make a universal 99% contaminant-removal claim for this system. Reverse osmosis can reduce many dissolved substances, but the specific reduction performance depends on the membrane, complete system design, water conditions, and documented testing.

4. What contaminants can the RO system reduce?

Reverse osmosis technology can reduce a range of dissolved substances. Specific claims for lead, arsenic, fluoride, nitrate, or other contaminants should be confirmed against documented performance information for this system before relying on it for a particular treatment need.

5. Does the system add minerals back into the water?

Yes. The system includes two remineralization stages following filtration. The mineral composition and resulting concentrations depend on the installed media and operating conditions.

6. What does the Natural Action structuring stage do?

The final stage guides water through an engineered vortex-inspired flow pathway. It is a passive water-structuring component and does not filter, disinfect, or remove contaminants.

7. How much water can the system produce?

The system includes an RO membrane with a nominal 100-gallon-per-day rating under specified test conditions. Actual production depends on incoming pressure, temperature, water chemistry, and membrane condition.

8. What are the system dimensions?

The RO assembly measures approximately 12 inches long, 9 inches wide, and 16 inches high. The separate storage tank measures approximately 10 inches in diameter and 16 inches high. Allow additional space for connections and maintenance.

9. How often do I replace the filters and RO membrane?

Routine filter components are generally replaced approximately every 12 months. The RO membrane may require replacement approximately every 24–36 months. Actual service intervals depend on water quality, consumption, and equipment performance.

10. Does the system include a faucet and storage tank?

Yes. The system includes a dedicated drinking-water faucet and separate storage tank. Installation requires compatible cold-water supply and drain connections.

Better Water Begins with a Complete Approach.

Filter What You Don't Want. Remineralize. Structure Last.

Bring together reverse osmosis filtration, mineral treatment, and Natural Action's distinctive vortex-inspired water-flow technology in one under-sink drinking-water system.

Natural Action Reverse Osmosis 10-Stage Structured Water System

It's Water, The Way Nature Intended.