This 5-Stage Reverse Osmosis System Offers More Uses Than Bottled Water
Never Runs Out
The USRO5 5-stage reverse osmosis system is designed to deliver better-tasting drinking and cooking water from a dedicated faucet. It is a point-of-use solution installed under the sink, utilizing multiple filtration stages to address common water quality issues and provide clearer, cleaner water for daily use.
Use this system if you want a consistent upgrade to your drinking water without having to filter the entire home.
What Does 5-Stage Mean?
A 5-stage reverse osmosis system utilizes five filtration steps, each with a distinct purpose. Stage names can vary by configuration, but the goal is the same: protect the RO membrane, improve taste, and polish water at the faucet.
Stage 1: Sediment Prefilter
Helps reduce larger particles, allowing downstream filters to work more effectively.
Stage 2: Carbon Prefilter
Helps reduce chlorine and chemical taste and odor to protect the RO membrane and improve water quality.
Stage 3: Carbon Prefilter (Second Carbon Stage)
Adds additional chlorine and chemical reduction, enhancing taste and extending membrane performance.
Stage 4: Reverse Osmosis Membrane
The core filtration stage removes dissolved solids and various contaminants that impact drinking water quality.
Stage 5: Carbon Postfilter
The final polishing stage improves taste and odor at the faucet.
Your complete system includes installation parts, fittings and everything listed here.
5 Stage Reverse Osmosis System, H2O USRO5-JG Features:
- 3/8″ Delivery (John Guest) Tubing and Fittings after Bladder Tank and through to faucet for increased flow of purified water.
- (1) DuPont Filmtec Membrane – 50 Gallons Per Day OR (1) 100 Gallons Per Day NSF Certified Thin Film Composite Membrane produces pure water fast. Most RO’s in stores have only 25 GPD membranes or less! Ours will refill your tank more than four times faster.
- (1) 5 Micron Spun Sediment Prefilter removes dirt, rust & sediment from your water in the first stage.
- (2) 10 Micron Carbon Block Prefilters, NSF Certified removes chlorine, bad taste & odor.
- (1) Inline Activated Carbon Post Filter OR (1) Inline Pentek pH Stabilizing Calcite/Carbon Filter made with premium quality coconut shell activated carbon, it filters the water after the bladder, just before you drink it.
- NSF Certified John Guest Fittings, Valves and Tubing.
- NSF Certified Pentair Filter Housings
- 3.2 Gallon Bladder Tank has all the water you’ll need, available when you need it. The tank ball valve is included.
- All Installation Parts & Easy-off Housing Wrench make installation and maintenance a breeze.
- Automatic Shut-Off Valve eliminates waste by closing the feed line when the tank is full.
Who Should Buy This 5-Stage Reverse Osmosis System?
This 5-stage RO system is a strong fit if you:
- Want better tasting water for drinking, coffee, cooking, and ice
- Are aiming to reduce dissolved solids and improve overall clarity
- Prefer a dedicated faucet solution instead of filtering every tap
- Want a multi-stage system with a proven filtration sequence
- Need a practical upgrade for typical household use under the kitchen sink
Compatibility and Installation Fit
Water Source
Works for many homes on city water and well water, but the performance of the RO depends on the feed water conditions. If your water contains heavy sediment, iron, or has strong odors, prefiltration may be necessary to protect the system.
Water Pressure
Reverse osmosis systems require sufficient water pressure to function effectively. If the pressure is low, a booster pump may be necessary for optimal results.
Install Location
Most commonly installed under a kitchen sink with space for the filter assembly, tank, and tubing runs to the faucet.
Tank and Connections
Confirm the tank size and available under-sink space before making a purchase. Confirm that your cold-water line connection and drain saddle placement are feasible for your plumbing setup.
Replacement Filter Schedule
This varies based on water quality and household usage. Use these typical intervals as a starting point and adjust sooner if you notice reduced flow or a decline in taste.
| Component | Typical replacement timing | What to watch for |
| Sediment prefilter | Every 6 to 12 months | Lower flow, visible sediment |
| Carbon prefilters | Every 6 to 12 months | Taste and odor changes |
| RO membrane | Every 2 to 5 years | TDS creep, taste decline |
| Postfilter | Every 6 to 12 months | Taste changes at the faucet |
Installation Overview of the 5-Stage Reverse Osmosis System
This is a high-level overview. Always follow your included instructions and local plumbing requirements.
- Shut off the cold-water supply and relieve pressure at the sink faucet.
- Mount the RO manifold in an accessible under-sink location.
- Install the feed-water adapter on the cold-water line.
- Install the drain saddle on the sink drain line.
- Mount the RO faucet on the sink or countertop.
- Connect tubing between the feed line, filters, membrane, tank, drain, and faucet.
- Pressurize the system and check for leaks at every connection.
- Flush and prime the system per the startup steps in the instructions.
- Discard the first full tank or flush cycles as directed.
- Recheck for leaks and confirm taste and flow after the system stabilizes.
FAQ About a 5-Stage Reverse Osmosis System
Q: What is the main benefit of a 5-stage reverse osmosis system?
A: It provides multi-stage drinking water filtration with a dedicated faucet, improving taste and reducing dissolved solids.
Q: Will this improve taste and odor?
A: Yes, carbon stages and the postfilter are designed to improve taste and odor at the faucet.
Q: Do I need this for the whole house?
A: No. This is a point-of-use system designed for a single faucet, typically located in the kitchen.
Q: How do I know when to replace the filters?
A: Replace on a regular schedule and sooner if the flow drops or the taste changes.
Q: Will low water pressure affect performance?
A: Yes. RO works best with adequate pressure, and low pressure may require a booster pump.
Q: Can I install this myself?
A: Many homeowners can, but you should be comfortable with basic plumbing connections and follow the included instructions.
Upgrade your drinking water at the sink now with a 5-stage reverse osmosis system that delivers cleaner taste and reliable everyday performance.
Warranty Information:
- RO Filter Housing Assembly – 3 Years
- NSF Metal Bladder Tank – 1 Year
- Thin Film Composite Membrane – 1 Year
Neutralize the pH of your RO water
with this Remineralizing Kit.
larger bladder tank?
