Advanced Filtration. Remineralization. Natural Action Vortex-Flow Technology.
Filter First. Restore Minerals. Structure Last.
Your drinking water deserves a complete approach.
The Natural Action Reverse Osmosis 10-Stage Under-Sink Structured Water System brings together advanced drinking-water filtration, mineral treatment, and our signature vortex-inspired flow-form technology.
Designed to install beneath your kitchen sink, this system combines reverse osmosis filtration, remineralization, a dedicated drinking-water faucet, and the Natural Action Under Sink Structured Water System.
One Complete System. Ten Treatment Stages. Better Water from One Faucet.
Why Choose the Natural Action 10-Stage RO System?
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Advanced Reverse Osmosis Filtration — Uses multiple filtration stages and an RO membrane to reduce a broad range of dissolved substances and other specified contaminants.
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100 GPD RO Membrane — Rated for up to 100 gallons per day under specified test conditions.
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5-Micron Sediment Pre-Filter — Captures suspended particles such as sediment, rust, and sand.
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Carbon Block Filtration — Helps reduce chlorine-related taste and odor while protecting the downstream membrane.
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1-Micron Filtration with Alkaline Additive — Provides an additional fine-filtration and water-conditioning stage.
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Remineralization Stages — Add selected minerals after RO treatment to modify the finished water's mineral content and taste.
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Natural Action Vortex-Flow Technology — Adds passive water revitalization as the final treatment stage.
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Dedicated Drinking-Water Faucet — Convenient access to treated water for drinking, coffee, tea, and cooking.
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Under-Sink Installation — Keeps the treatment equipment and storage tank out of sight.
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Replaceable Filtration Components — Annual replacement filter pack and separately available RO membrane.
The Benefits of Filtration, Remineralization & Structuring
1. Advanced Drinking-Water Filtration
Reverse osmosis uses pressure to move water through a semipermeable membrane.
The membrane separates a portion of dissolved substances from the product water, while the reject-water stream carries concentrated substances to the drain.
Combined with appropriate sediment and carbon pre-filtration, RO is an effective approach for reducing many dissolved contaminants.
The benefit: A comprehensive drinking-water treatment process that addresses a wider range of water-quality concerns than basic sediment filtration alone.
Actual contaminant reduction depends on membrane performance, feed-water chemistry, pressure, maintenance, and any applicable product-specific testing.
2. Remineralization After Reverse Osmosis
Reverse osmosis reduces many dissolved minerals along with other dissolved substances.
The Natural Action system incorporates post-treatment mineral media intended to introduce selected minerals into the filtered water.
These stages are designed to modify the water's mineral composition and taste.
The benefit: A drinking-water system that combines contaminant reduction with post-RO mineral treatment.
The amount and composition of minerals added depend on water chemistry, flow, and media condition.
3. Natural Action Structured Water Technology
After filtration and mineral treatment, water passes through the Natural Action Under Sink Structured Water System.
Engineered vortex-inspired flow-form pathways guide the water through a passive spiral-flow process.
The benefit: Natural Action's water-movement technology is incorporated directly into the finished drinking-water line.
The revitalizer does not independently remove contaminants, disinfect water, or guarantee physiological benefits.
4. A Convenient Drinking-Water Solution
The included dedicated faucet provides treated water whenever you need it.
Use it for drinking, filling water bottles, preparing coffee or tea, and cooking.
The benefit: One convenient kitchen location for filtered, remineralized, and vortex-treated drinking water.
5. Designed for Long-Term Maintenance
The system uses replaceable filtration cartridges and a replaceable RO membrane.
Natural Action offers a compatible annual filter pack and a separately available 100 GPD membrane.
The benefit: A serviceable drinking-water system with identifiable maintenance components and replacement schedules.
Understanding the 10-Stage Treatment System
Filtration → Remineralization → Vortex-Flow Structuring
The system is marketed as a 10-stage configuration:
| Stage Group |
Treatment Function |
| Stages 1–7 |
Multi-stage filtration and reverse osmosis treatment |
| Stages 8–9 |
Post-RO mineral treatment |
| Stage 10 |
Natural Action vortex-flow revitalization |
The available replacement-filter documentation identifies the following service components. The exact numbered position of each individual cartridge within stages 1–9 should be confirmed against the supplied installation diagram.
5-Micron Sediment Filter
Filtration Rating: 5 Microns
Designed to capture suspended particles such as sand, rust, dirt, and sediment.
This pre-filtration helps protect downstream treatment components from excessive particulate loading.
Carbon Block (CTO) Filter
Filtration Media: Carbon Block
Designed to reduce certain chlorine-related taste and odor compounds and help protect the RO membrane from chlorine exposure.
Its exact micron rating and certified contaminant-reduction performance should be confirmed against the cartridge documentation.
1-Micron Filter with Alkaline Additive
Filtration Rating: 1 Micron
Provides fine particulate filtration and incorporates alkaline-conditioning media.
Its specific mineral contribution and effect on finished-water pH depend on the supplied media and water conditions.
Reverse Osmosis Membrane
Nominal Production Rating: 100 GPD
The RO membrane performs the primary dissolved-substance separation function.
Its nominal rating is up to 100 gallons per day under specified operating conditions, not a guaranteed daily household output.
Actual production depends on feed-water pressure, temperature, dissolved-solids concentration, membrane condition, and other operating factors.
Remineralization Media
The system incorporates post-treatment mineral media intended to introduce selected minerals into the RO-treated water.
The replacement pack includes remineralization media.
Exact mineral composition, cartridge dimensions, and individual stage assignments should be confirmed from the current system bill of materials.
Natural Action Under Sink Structured Water System
Final Treatment Stage: Vortex-Inspired Flow-Form Engineering
The Natural Action revitalizer guides finished water through engineered spiral-flow pathways before it reaches the drinking-water faucet.
It operates passively using existing water flow.
It does not replace any of the required filtration stages.
Complete Product Specifications
| Specification |
Details |
| Product |
Reverse Osmosis 10-Stage Under-Sink Structured Water System |
| SKU |
RO-US-REMIN-STRCTR-TANK- SPGT |
| Total Advertised Stages |
10 |
| Filtration Stages |
1–7 |
| Remineralization Stages |
8–9 |
| Water Structuring Stage |
10 |
| RO Membrane Capacity |
100 gallons per day nominal |
| Sediment Filter |
5 micron |
| Carbon Filter |
Carbon block (CTO) |
| Fine Filter |
1 micron with alkaline additive |
| Mineral Treatment |
Post-RO remineralization media |
| Final Structuring Device |
Natural Action Under Sink Revitalizer |
| RO Assembly Dimensions |
12" L × 9" W × 16" H |
| Storage Tank Dimensions |
10" diameter × 16" H |
| Listed Shipping Weight |
25 lb |
| Installation |
Under kitchen sink |
| Water Supply |
Compatible cold-water supply |
| Faucet |
Dedicated drinking-water faucet included |
| Drain Connection |
Required for RO reject water |
| Replacement Filter Pack |
Available separately |
| RO Membrane Replacement |
Available separately |
| Recommended Cartridge Service |
Approximately every 12 months |
| Recommended Membrane Service |
Approximately every 24–36 months |
| Installation |
Qualified plumber recommended |
Important measurement note: The RO assembly and tank are separate components. Allow additional room for tubing, connections, faucet plumbing, cartridge replacement, and routine servicing. The exact installed footprint will depend on the kitchen cabinet and plumbing arrangement.
Technical information requiring confirmation: Storage-tank usable capacity, minimum and maximum inlet pressure, operating temperature range, drain-water ratio, connection sizes, and any certification claims are not specified in the reviewed product listing.
Replacement Filters & Maintenance
Keep Your RO System Performing as Designed.
Regular maintenance is essential for reverse osmosis filtration.
Annual Replacement Filter Pack
The compatible Natural Action replacement kit includes:
| Replacement Component |
Specification |
Recommended Interval |
| Sediment pre-filter |
5 micron |
12 months |
| Carbon block filter |
CTO |
12 months |
| Fine filter with alkaline additive |
1 micron |
12 months |
| Remineralization pack |
Post-treatment mineral media |
12 months |
Replace sooner when required by water conditions, rated service capacity, changes in flow, or manufacturer instructions.
ORDER THE RO REPLACEMENT FILTER PACK
RO Membrane Replacement
Membrane Rating: 100 GPD
Recommended replacement is approximately every 24–36 months, subject to feed-water conditions, usage, membrane performance, and maintenance.
ORDER THE 100 GPD RO MEMBRANE
Why Filter Replacement Matters
Over time, filtration cartridges accumulate captured material or exhaust their treatment capacity.
Neglected maintenance can reduce flow, impair contaminant reduction, and shorten membrane service life.
A regular replacement schedule helps maintain the system's intended performance.
LEARN WHY CHANGING YOUR WATER FILTERS MATTERS
Installation & Space Requirements
A Complete Under-Sink Drinking-Water Solution.
The system is designed to connect to a compatible kitchen cold-water supply and deliver treated water through a dedicated drinking-water faucet.
Typical Installation Components
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RO filtration assembly
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Separate RO storage tank
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Cold-water feed connection
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Wastewater drain connection
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Dedicated drinking-water faucet
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Tubing and fittings appropriate to the supplied system
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Natural Action Under Sink Revitalizer
Installation Sequence
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Connect the system to a compatible cold-water supply.
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Route water through the sediment and carbon pre-filtration components.
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Direct water through the RO membrane, with reject water routed to the appropriate drain connection.
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Store treated water in the RO storage tank.
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Route water through the specified post-treatment mineral stages.
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Pass the finished water through the Natural Action revitalizer.
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Deliver the treated water to the dedicated drinking-water faucet.
The exact tubing arrangement and placement of the post-treatment components must follow the supplied manufacturer's installation diagram.
Planning Your Under-Sink Space
RO Assembly: 12" long × 9" wide × 16" high
Storage Tank: 10" diameter × 16" high
Both components require sufficient clearance for safe plumbing connections and future maintenance.
Before installation, confirm cabinet space, feed-water pressure, drain access, faucet location, and any local plumbing requirements.
Professional installation is recommended.
Which Natural Action System Is Right for You?
Want Filtration, Remineralization & Structuring?
10-Stage Reverse Osmosis System
A complete under-sink system combining RO filtration, mineral treatment, and Natural Action vortex-flow technology.
You're viewing this system.
Already Have Reverse Osmosis?
HD-9 Post-RO Structured Water System
Add Natural Action's vortex-inspired technology to compatible existing RO plumbing.
EXPLORE THE POST-RO REVITALIZER
Prefer Carbon-Block Filtration?
Under Sink Structured Water System with Multipure Aquaversa
Combines carbon-block filtration with Natural Action's HD-9 flow-form technology.
EXPLORE MULTIPURE + NATURAL ACTION
Want Whole-Home Structured Water?
HD-24 Whole Home Structured Water System
Bring Natural Action's vortex-inspired technology to compatible water outlets throughout your home.
EXPLORE WHOLE-HOME STRUCTURED WATER
Frequently Asked Questions
1. What does the Natural Action 10-Stage Reverse Osmosis System do?
It combines multiple drinking-water filtration stages, an RO membrane, post-treatment mineral media, and a final Natural Action vortex-flow revitalizer. The system is designed to deliver treated drinking water through a dedicated kitchen faucet.
2. What are the benefits of combining reverse osmosis, remineralization, and structured water?
Reverse osmosis reduces a range of dissolved substances and other specified contaminants. Remineralization introduces selected minerals after RO treatment, while the Natural Action revitalizer provides a separate passive vortex-flow stage. Specific changes in taste, mouthfeel, or health outcomes are not guaranteed.
3. What filters are included in the system?
The replacement-filter documentation identifies a 5-micron sediment filter, carbon block (CTO) filter, 1-micron filter with alkaline additive, remineralization media, and a separately replaceable 100 GPD RO membrane. The complete installed configuration should be checked against the supplied system diagram.
4. What contaminants does the RO system remove?
Reverse osmosis can reduce many dissolved substances, including certain metals and salts. Actual reduction depends on the specific membrane, operating conditions, maintenance, and product-specific performance data. Consult verified performance documentation for individual contaminant claims.
5. What are the dimensions of the RO system and storage tank?
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. Additional installation and maintenance clearance is required.
6. How much drinking water can the system produce?
The RO membrane has a nominal rating of 100 gallons per day under specified test conditions. Actual output depends on incoming water pressure, temperature, dissolved-solids concentration, membrane condition, and system configuration.
7. How often should I replace the filters and RO membrane?
The sediment, carbon block, fine-filtration, and remineralization components are generally replaced approximately every 12 months. The 100 GPD RO membrane is generally replaced every 24–36 months. Follow manufacturer instructions and adjust maintenance based on water quality and performance.
8. Does the system add minerals back after reverse osmosis?
Yes. The system includes post-treatment remineralization media intended to introduce selected minerals into RO-treated water. Actual mineral content depends on the media composition, water chemistry, and operating conditions.
9. Does the Natural Action structuring stage replace filtration?
No. The Natural Action revitalizer guides water through engineered vortex-inspired flow pathways. It does not remove contaminants, disinfect water, or replace the RO membrane and other filtration components.
10. Can I install the system myself?
Some homeowners with suitable plumbing experience may be able to install an under-sink RO system. Professional installation is recommended because the system requires a cold-water feed, drain connection, storage tank, dedicated faucet, and correct routing through the filtration and post-treatment stages.
Better Water Starts with a Complete Approach.
Filter It. Remineralize It. Revitalize It.
Bring together reverse osmosis filtration, mineral treatment, and Natural Action's signature vortex-flow technology in one convenient under-sink system.
Natural Action Reverse Osmosis 10-Stage Under-Sink Structured Water System
Advanced Filtration. Thoughtful Engineering. Everyday Convenience.
Natural Action — It's Water, The Way Nature Intended.
