Description
Our 5-stage countertop RO adds a polishing stage beyond the basic 4-stage system for ultra-low TDS water — still installs on your kitchen faucet in under 60 seconds, no plumber required.
5-Stage Ultra-Pure Countertop Reverse Osmosis
This 5-Stage Ultra-Pure Reverse Osmosis System connects directly to your kitchen faucet and requires no plumber, no permanent installation, and no tools. It’s an ideal portable water purification solution for apartments, homes, RVs, aquariums, and travel — assembled in-house in California and sold under the MyWaterClub brand.
Where a 4-stage system runs Sediment → Carbon → RO Membrane → Post-Carbon, this 5-stage system adds a dedicated polishing stage after the membrane for even lower total dissolved solids (TDS) and a more refined finish.
4-Stage Basic
Sediment → Carbon → RO Membrane → Post-Carbon
5-Stage Ultra-Pure (this system)
Sediment → Carbon → RO Membrane → DI Polishing → Final Carbon
Two versions, one product — choose at checkout: the Ultra-Pure version uses a deionizing (DI) mixed-bed stage for the lowest possible TDS, while the Remineralized version swaps that stage for a mineral post-filter that adds back beneficial minerals for taste. Both connect the same way and use the same membrane options.
The 5 filtration stages
Stage 1 — Sediment
5 Micron Sediment Filter
Reduces dust, sand, rust, and suspended particles — protecting downstream filters and extending membrane life.
Stage 2 — Carbon
Coconut Shell Carbon (T28)
Reduces chlorine, taste and odor, VOCs, and many common organic chemicals before the water reaches the membrane.
Stage 3 — RO Membrane
TFC Reverse Osmosis Membrane
High-rejection membrane reduces a wide range of dissolved solids and contaminants, including heavy metals, arsenic, fluoride, and lead.
Stage 4 — Polishing
DI Mixed-Bed (or Mineral, Remineralized version)
Ultra-Pure: deionizing mixed-bed resin drives TDS to its lowest point by capturing trace ions.
Stage 5 — Finish
Premium Coconut Carbon (T33)
Final carbon stage polishes taste and delivers the crisp, clean finish you expect from a premium RO system.
Choose your membrane: 100 or 150 GPD
100 GPD Membrane
Standard production rate with balanced efficiency.
150 GPD Membrane
Higher output for faster water production and increased daily demand.
Both membrane options deliver the same ultra-pure filtration quality. Higher-GPD membranes produce water faster; actual performance depends on your water pressure and temperature.
Key features
- ✓Ultra-pure water quality with 5-stage filtration
- ✓Installs in under 60 seconds — no plumbing work or permanent fixtures
- ✓Produces cleaner, lower-TDS water than a standard 4-stage system
- ✓Reduces a wide range of dissolved contaminants — chlorine, chloramines, VOCs, pesticides, and heavy metals
- ✓DI polishing stage drives total dissolved solids (TDS) to ultra-low levels
- ✓Fluoride reduction: approximately 90–95%
- ✓Operating cost approximately $0.06–$0.07 per gallon
- ✓Produces about 3–5 gallons per hour
- ✓Designed and assembled in the USA (California)
- ✓30-day satisfaction guarantee
About bacteria & microorganisms
Because reverse osmosis filters by size exclusion at the membrane, it also reduces many particles down into the size range of bacteria and cysts. Important: this system is not a certified microbiological purifier. Do not use it to make water that isn’t already microbiologically safe safe to drink — if you’re on an untested well or under a boil-water advisory, treat your water accordingly first.
Specifications
| System type |
Countertop / faucet-connect reverse osmosis |
| Stages |
5 (Sediment · T28 Carbon · RO Membrane · DI) |
| Versions |
Ultra-Pure (DI) |
| Membrane options |
100 GPD or 150 GPD (TFC) |
| TDS reduction |
Ultra-low (DI polishing after membrane) |
| Filtration accuracy |
~0.0005 microns (membrane) |
| Water production |
~3–5 gallons per hour (drip-style) |
| Service life |
Filters ~12 months (varies with water quality & usage) |
| Operating cost |
~$0.06–$0.07 per gallon |
| Product dimensions |
14 × 6 × 6 in |
| Weight |
~5.5 lbs |
| Assembly |
Assembled in the USA (California) |
| Brand |
MyWaterClub |
| SKU |
CRO5DT |
What to expect day to day
- RO is a slow, drip-style process — not a continuous high-flow tap. It produces roughly 1 gallon every 11–24 minutes depending on membrane size, pressure, and temperature.
- Water production runs about 3–5 gallons per hour. We recommend collecting purified water in advance so you always have a steady supply on hand.
- Example TDS result: if your source water is around 350 ppm, filtered water may measure roughly 0–20 ppm with the Ultra-Pure version, or 30–60 ppm with the Remineralized version, after 5–7 days of regular use following the initial flush.
Typical RO membrane rejection rates
| Contaminant |
Typical % reduced |
Contaminant |
Typical % reduced |
| Arsenic |
93–96% |
Lead |
95–98% |
| Aluminum |
86–90% |
Phosphate |
94–98% |
| Bicarbonate |
90% |
Magnesium |
94–98% |
| Cyanide |
85–93% |
Fluoride |
90–95% |
| Chloride |
85–92% |
Nickel |
96–98% |
| Calcium |
94–98% |
Cadmium |
94–98% |
| Sodium |
86.5–93% |
Detergent |
97–99% |
| Sulfate |
96–98% |
Herbicides |
97–98% |
| Potassium |
84–95% |
Insecticides |
97–98% |
| Barium |
95–98% |
Strontium |
96% |
| Iron |
94–98% |
Mercury |
94–98% |
| Zinc |
95–98% |
Selenium |
94–96% |
| Copper |
96–98% |
Silver |
93–95% |
| Ammonium |
80–90% |
Bromide |
90–95% |
| Silica |
90–98% |
Chromate |
85–95% |
| Detergent |
97–99% |
Herbicides |
97–98% |
| Insecticides |
97–98% |
Radioactivity |
93–94% |
| Nitrate |
60–76% |
Boron |
50–70% |
| Bacteria |
98–99% |
Virus |
99% |
Rejection rates are typical ranges for RO membrane technology and vary with water chemistry, pressure, temperature, and membrane condition. See the note above regarding microbiological performance — this system is not a certified microbiological purifier.
Connection options
Connect the system with the included kitchen-faucet adapter, or choose the adapter that matches your setup:
- Kitchen faucet adapter (standard, included)
- Pull-down or spray kitchen faucet adapter
- Bathroom faucet adapter (male or female)
- Garden or laundry hose connection (indoor or outdoor)
- Shower arm adapter
- Handheld shower adapter
Routine filter replacement
Filters are service components and must be replaced as part of normal maintenance. Pick the set that matches the version you bought:
Ultra-Pure version (DI stage)
Actual filter life varies with water quality, usage, and incoming TDS levels.
Recommended accessory
Inline Mechanical Shut-Off Timer
Highly recommended with any countertop RO system. It automatically stops the water after a preset time — fill containers without worrying about overflows. Prevents spills, perfect for unattended or overnight filling, and needs no electricity or batteries.
View Inline Shut-Off Timer →
Please note: Reduction performance and filter life depend on your water chemistry, pressure, and usage, so results vary from home to home. This product is not certified to treat water of unknown quality and is not a substitute for testing your water. Descriptions use general, qualified language and are not health claims. When in doubt, test your water or ask us and we’ll help you choose the right system.
Larry –
Fantastic deal. I’m honestly surprised that countertop reverse osmosis systems are so difficult to find. Revolution and APEC seem to be among the few companies offering them. I have not tried the APEC model, so I’m not sure why it costs so much more, especially since it only has four stages.
Installation took about a minute and required no tools. When I first turned the system on, I noticed a small leak at one of the tube connections, but it stopped after I gently adjusted and reseated the tube.
After using the system for about a week, my filtered water measures only 2 ppm using an HM Digital TDS-EZ tester. My unfiltered tap water measures 114 ppm, so the difference is impressive.
The instructions were concise and easy to understand, and the packaging was excellent. This company clearly takes its products and customers seriously. You can tell how professional and reliable they are just from the packaging and instructions.
Most importantly, the water tastes great. I can fill a large pitcher in about 15 minutes. Overall, I’m very happy with this countertop RO system and consider it an excellent value.