How Does a Reverse Osmosis System Work?
Reverse osmosis systems use several filtration stages to purify water. Water initially passes through pre-filters that remove larger particles like dirt and sediment. It then flows through the RO membrane, which blocks dissolved impurities such as chlorine, heavy metals, and microorganisms. After filtration, the purified water is stored in a small tank ready for use.
Because the filtration process removes nearly all impurities, including some beneficial minerals, many RO systems allow you to add these minerals back into the water through a remineralization stage. This not only improves taste but can also raise the pH of the water, making it slightly alkaline.
Benefits of Using a Reverse Osmosis Drinking Water System
- Superior Water Purity : RO systems remove a vast majority of contaminants, including chemicals, sediment, and microplastics, providing you with safe and healthy drinking water.
- Environmental Impact : Using an RO system reduces reliance on bottled water, which helps minimize plastic waste and the environmental hazards associated with plastic production and disposal.
- Cost Efficiency : While there is an upfront investment, RO systems save money over time by eliminating the need to buy bottled water regularly.
- Improved Taste and Odor : By removing chlorine and other chemicals, RO water tastes fresher and cleaner.
- Convenience : Installed typically under your kitchen sink or in the basement, RO systems provide filtered water directly from a dedicated faucet or can be connected to your refrigerator for ice and water dispensing.
Common Installation Locations
Most reverse osmosis systems are installed under the kitchen sink, close to the water source and the faucet where the water will be dispensed. In some cases, depending on your home setup, the system can also be installed in the basement as long as it is within about 20 feet of the faucet. This distance helps ensure adequate water pressure and flow without requiring a booster pump.
Maintenance and Filter Replacement
Maintaining your RO system is straightforward. The general recommendation is to replace the pre-filters and post-filters annually to maintain optimal water quality. The RO membrane itself has a longer lifespan and typically needs replacement every five years. Regular maintenance ensures your system continues to deliver clean and safe drinking water consistently.
Additional Resources
If you want a deeper understanding of how reverse osmosis works, there are educational videos available that explain the entire process in detail. These resources are helpful for new users to familiarize themselves with the technology and maintenance requirements.
Types of Reverse Osmosis Systems : Standard vs. High Efficiency
When shopping for a reverse osmosis drinking water system, it’s important to understand the different types available in the market. The two primary categories are standard reverse osmosis systems and high-efficiency reverse osmosis systems. Each type has its own advantages and considerations, especially concerning water wastage, flow rate, and system design.
Standard Reverse Osmosis Systems
Standard RO systems are the traditional models widely used across many households. They typically feature :
- Use of quarter-inch tubing throughout the system, which can limit water flow speed.
- Higher water waste during filtration; for every gallon of purified water produced, multiple gallons can be wasted and sent to the drain.
- A filtration process that includes several pre-filters, an RO membrane, and post-filters to ensure water purity.
While effective at water purification, these systems are less efficient regarding water conservation, making them less environmentally friendly compared to newer alternatives.
High Efficiency Reverse Osmosis Systems
High efficiency RO systems are designed to conserve water and improve overall performance. Key features include :
- Reduced Water Waste : High efficiency systems waste significantly less water—approximately half the amount wasted by standard systems—making them more eco-friendly and cost-effective.
- Larger Tubing : They use larger 3/8-inch tubing from the tank to the faucet, which allows for higher flow rates and faster water delivery.
- Water Saver Technology : Some high efficiency models, such as the Water Saver 75, incorporate specialized designs to maximize water use and minimize waste.
- Remineralization Options : These systems often include or allow for the addition of a remineralizing filter that reintroduces beneficial minerals and raises the water’s pH to create alkaline water.
Comparing Standard vs. High Efficiency Systems
| Feature | Standard Reverse Osmosis System | High Efficiency Reverse Osmosis System |
|---|---|---|
| Water Waste | Higher; wastes multiple gallons per gallon of purified water | Lower; wastes approximately half as much water |
| Tubing Size | Quarter-inch tubing throughout | 3/8-inch tubing from tank to faucet for better flow |
| Flow Rate | Slower due to smaller tubing | Faster, providing higher water flow at the faucet |
| Remineralization | Optional or requires add-on | Often included or easily added to raise pH and add minerals |
| Environmental Impact | Less environmentally friendly due to higher water waste | More environmentally friendly, conserving water |
Why Choose a High Efficiency Reverse Osmosis System?
High efficiency RO systems are rapidly becoming the preferred choice for many households because they :
- Conserve water, reducing your overall consumption and lowering water bills.
- Provide faster water flow, making them more convenient for everyday use.
- Support the addition of beneficial minerals to improve water taste and health benefits.
- Help reduce environmental impact by minimizing water waste and decreasing reliance on bottled water.
An example of a high efficiency system is the Water Saver 75, which is praised for its water-saving capabilities, higher flow rate, and ability to incorporate remineralization filters. Such systems are also supported by comprehensive customer service, detailed installation videos, and easy maintenance guides, making them user-friendly for homeowners.
Additional Considerations When Choosing an RO System
Beyond efficiency and tubing size, other factors to consider include :
- Non-Proprietary Systems : Opt for systems with widely available filters rather than proprietary ones. Proprietary filters can be costly and difficult to replace if the manufacturer discontinues them.
- Made in North America : Choosing systems manufactured locally often ensures higher quality standards and better customer support.
- Support and Resources : Look for brands that offer strong customer service, troubleshooting assistance, and installation tutorials to help you maintain your system effectively.
Key Features to Look for in a Reverse Osmosis System
When selecting a reverse osmosis (RO) drinking water system for your family, understanding the essential features that contribute to performance, durability, and convenience is crucial. Not all RO systems are created equal, and certain design elements can significantly impact water quality, flow rate, maintenance, and long-term usability.
Efficiency and Water Waste
One of the primary features to consider is the efficiency of the system, specifically how much water it wastes during the filtration process. Traditional or standard RO systems tend to waste a considerable amount of water, sometimes more than double what they produce as filtered water. This inefficiency can increase your water bill and is less environmentally friendly.
High-efficiency reverse osmosis systems are designed to reduce water waste significantly. For example, the Water Saver 75 RO system wastes roughly half the water compared to standard models, making it an excellent choice for those who want to conserve water without compromising on filtration quality.
Size and Diameter of Tubing
The size of the tubing used in an RO system directly affects the water flow rate. Many smaller RO systems use quarter-inch tubing throughout, which limits the flow and can lead to slower water delivery at the faucet. Larger three-eighths-inch tubing, especially from the storage tank to the faucet, allows for higher flow rates, making water dispensing faster and more convenient during daily use.
Non-Proprietary Design
Another key feature to look for is whether the RO system uses proprietary or standard filters and components. Proprietary systems often restrict you to purchasing replacement filters and parts exclusively from the manufacturer, which can :
- Limit availability of replacement parts
- Increase long-term maintenance costs
- Create challenges if the company goes out of business
Opting for a non-proprietary system ensures you can source filters from multiple suppliers, often at lower costs, and reduces dependency on a single brand. This is especially important for the longevity and maintenance of your RO system.
Support and Customer Service
Reliable customer service and support resources are invaluable when investing in an RO system. Look for companies that provide :
- Helpful installation and troubleshooting videos
- Responsive email or phone support
- Clear guidance on filter replacement schedules
Good support ensures that if you encounter issues or have questions during installation or maintenance, you can get prompt assistance, improving your overall experience and satisfaction.
Filter Replacement and Maintenance
Maintenance is a critical aspect of keeping your RO system running effectively. Most RO systems have multiple filters, including sediment and carbon filters, and a semi-permeable membrane. It is generally recommended to replace the following :
- Pre-filters and post-filters annually to maintain water quality
- Membrane approximately every five years, depending on water quality and usage
Choosing an RO system with easily accessible filters and straightforward replacement procedures will save time and avoid frustration in the long run.
Made in North America
Lastly, purchasing an RO system manufactured in North America can be a significant advantage. Such products typically adhere to higher quality standards, better regulatory oversight, and more accessible customer service. It also reduces shipping times and complications compared to overseas products.
Summary of Key Features
| Feature | Importance | What to Look For |
|---|---|---|
| Efficiency (Water Waste) | Reduces environmental impact and water bills | High-efficiency models like Water Saver 75 |
| Tubing Size | Affects water flow rate and dispensing speed | 3/8-inch tubing preferred over 1/4-inch tubing |
| Filter Compatibility | Ensures easy and affordable maintenance | Non-proprietary filters and parts |
| Customer Support | Assists with installation and troubleshooting | Responsive service and instructional videos |
| Maintenance Requirements | Ensures long-term water quality | Annual pre/post filter replacement, membrane every 5 years |
| Manufacturing Origin | Quality assurance and faster service | Made in North America |
Remineralization and pH Benefits in Reverse Osmosis Water
While reverse osmosis systems excel at removing impurities from water—including chemicals, minerals, dirt, and debris—they also tend to remove beneficial minerals. This can result in water that is very pure but may lack taste and essential minerals that contribute to health and alkalinity. Fortunately, many modern RO systems incorporate remineralization features to address these concerns.
What is Remineralization?
Remineralization is the process of adding healthy minerals back into purified water after the reverse osmosis filtration has removed almost everything. Common minerals added back include calcium and magnesium, which not only improve the taste of water but also offer health benefits such as supporting bone health and maintaining electrolyte balance.
Alkaline pH Enhancement
In addition to adding minerals, remineralization filters can also raise the pH of RO water, making it more alkaline. Alkaline water is believed to have antioxidant properties and may help neutralize acidity in the body, although scientific consensus on these benefits is still evolving.
The addition of a remineralizing filter in the RO system’s final stage transforms the ultra-pure, slightly acidic water from the membrane into a balanced, alkaline beverage with a smoother mouthfeel.
Remineralization Filter Placement
Typically, the remineralization filter is installed as the last filter stage in the RO system. After the water passes through the membrane and the storage tank, it flows through this filter where minerals are reintroduced and the pH is adjusted before reaching your faucet.
Advantages of Remineralized RO Water
- Improved Taste : Pure RO water can taste flat or bland; minerals enhance flavor and mouthfeel.
- Health Benefits : Restores essential minerals like calcium and magnesium.
- Alkalinity : Raises pH to create alkaline water which some prefer for its potential health benefits.
- Balanced Water Quality : Combines purity with beneficial mineral content.
Choosing an RO System with Remineralization
If you are concerned about losing beneficial minerals, consider an RO system that includes a remineralization filter or offers it as an add-on. For example, the Water Saver 75 system supports installing a sixth-stage remineralizing filter, which not only adds minerals but also elevates the water’s pH to create alkaline water.
Such systems ensure you get the best of both worlds : clean, contaminant-free water with the health and taste benefits of natural minerals.
What to look for
-
Certification & filtration performance
Always choose systems certified under standards such as NSF/ANSI 58 for RO which verify the removal of contaminants. -
Contaminants you need removed
Check your water’s quality (via local report or test kit) and identify issues like lead, arsenic, fluoride, high TDS (total dissolved solids). Good RO systems remove 90-99% of many dissolved contaminants. -
System type & space requirements
Under-sink systems are common, but tankless or countertop RO options exist for limited space. Tank models use storage tanks; tankless take less space but may require more plumbing or power. -
Water waste & production rate
RO systems typically generate some wastewater (reject water). Consider how much daily purified water you need and how efficient the system is. -
Maintenance & filter/replacement cost
Regular filter and membrane changes are necessary (often every 6-12 months for pre/post filters). Budget for consumables and check ease of changing them. -
Remineralisation & taste
RO removes almost all minerals, so many units include a remineralisation stage (adding calcium/magnesium) or an alkaline filter to improve taste and pH. If you prefer “mineral-rich” water, look for this. -
Installation & plumbing compatibility
Ensure you have the space, under-sink access, and appropriate water pressure. Some units require drilling a separate faucet or accessing cold-water line. If you lack plumbing skills you may need a professional.
Quick decision checklist
-
Test your tap water (TDS + specific contaminants)
-
Choose a certified RO unit
-
Decide placement (under-sink, countertop, tank vs tankless)
-
Confirm adequate daily water production & acceptable waste ratio
-
Check filter change frequency & spare part cost
-
Decide if you want mineral/alkaline stage for taste
-
Ensure installation is feasible for your kitchen
Installation Options and Compatibility with Appliances
Installing a reverse osmosis system involves more than just selecting the right model; it also requires considering where and how the system will fit into your home’s existing water setup and appliances. Proper installation ensures optimal performance, ease of maintenance, and compatibility with other water-using devices.
Common Installation Locations
Most reverse osmosis systems are installed under the kitchen sink, which is convenient for accessing cold drinking water directly from a dedicated faucet. However, depending on your home’s layout and preferences, alternative locations may be viable :
- Under the Sink : The most common placement, allowing for easy faucet connection and access.
- Basement Installation : Suitable if your basement is within 20 feet of the kitchen faucet; it keeps the system out of sight and frees up cabinet space.
As long as the distance between the system and the faucet is within approximately 20 feet, a booster pump is generally not necessary to maintain adequate water pressure and flow.
Compatibility with Refrigerators and Ice Makers
Many modern refrigerators include water dispensers and ice makers that require a clean water supply. Reverse osmosis systems can be integrated with these appliances by “teeing off” the RO system’s output line to feed water directly to your fridge. This setup ensures that the water used for ice and chilled water is as pure as the water you drink from the RO faucet.
Connecting your RO system to your refrigerator offers several advantages :
- Consistent supply of purified water for drinking and ice
- Reduces contaminants in ice cubes, improving taste and safety
- Eliminates the need for separate filtration systems in your fridge
Installation Resources and Support
Installing an RO system can be straightforward, especially if you have some basic DIY skills. Many manufacturers provide detailed installation videos and step-by-step guides to help you through the process. For instance, the Water Saver 75 system comes with comprehensive installation videos that demonstrate the entire setup, including connecting to the faucet and optionally to your refrigerator.
If you encounter any challenges, responsive customer service teams are available to assist via email or phone, ensuring you get your system up and running efficiently.
Considerations for Plumbing and Space
Before installing, consider the following :
- Space Availability : Ensure there is enough room under the sink or in your chosen location for the RO unit and storage tank.
- Water Pressure : Most RO systems work well at typical household water pressures; check if your water pressure meets the manufacturer’s recommendations.
- Drain Access : The system will require a drain connection to dispose of wastewater, so proximity to a drain pipe is necessary.
Summary of Installation and Compatibility
| Installation Aspect | Details | Recommendations |
|---|---|---|
| Typical Location | Under kitchen sink or basement within 20 feet of faucet | Choose based on space and convenience; avoid booster pumps if within 20 feet |
| Connection to Appliances | Can tee off RO output to refrigerator water dispenser and ice maker | Ensures clean water supply to fridge; improves ice quality |
| Installation Support | Instructional videos and customer service available | Use available resources for DIY installation; seek support if needed |
| Plumbing Requirements | Requires access to cold water line and drain pipe | Plan layout to minimize tubing length and ensure proper drainage |
Maintenance Tips : Filter and Membrane Replacement
Maintaining a reverse osmosis (RO) drinking water system is crucial to ensure you consistently receive high-quality, pure water for your family. Proper maintenance not only extends the lifespan of your system but also safeguards the taste and safety of your drinking water. A fundamental part of this maintenance involves timely replacement of filters and the RO membrane.
Understanding the Components That Need Replacement
A typical RO system, like the Water Saver 75 discussed in the video, contains multiple filters and a membrane, each playing a unique role in purifying your water :
- Pre-filters : These usually include sediment and carbon filters that remove dirt, chemicals, chlorine, and other contaminants that could damage the membrane.
- Reverse Osmosis Membrane : The heart of the system, this semi-permeable membrane removes dissolved solids, harmful minerals, and impurities from the water.
- Post-filters : Often a final carbon filter or a remineralizing filter that improves taste and adds beneficial minerals back into the water.
Recommended Replacement Schedule
To maintain optimum performance, it is essential to replace the filters and membrane according to the manufacturer’s guidelines :
| Component | Recommended Replacement Frequency | Reason |
|---|---|---|
| Pre-filters (sediment and carbon) | Annually (once per year) | To prevent clogging and protect the membrane from contaminants |
| Post-filters (carbon or remineralization filter) | Annually (once per year) | To maintain water taste and quality |
| RO Membrane | Every 3 to 5 years | Membrane lifespan depends on water quality and usage; replacement ensures continued effective filtration |
It is important to note that while the pre-filters and post-filters require annual replacement, the membrane’s lifespan is significantly longer. However, you should monitor water taste and system output as indicators of when the membrane might need replacement sooner.
Signs You Need to Replace Filters or Membrane
Pay attention to the following signs that may indicate it’s time for maintenance :
- Decreased water flow : If water output slows down considerably, filters or membrane may be clogged.
- Change in water taste or odor : A noticeable decline in water flavor or smell can signify worn-out filters.
- Increased TDS (Total Dissolved Solids) levels : If you have a TDS meter and notice rising levels, the membrane may be failing.
Tips for Easy Maintenance
Maintaining your RO system is straightforward and can be done by most homeowners :
- Follow manufacturer’s instructions : Each system may have specific filter models and replacement steps.
- Keep replacement filters handy : Having spare filters ensures you don’t delay replacements.
- Use helpful resources : Utilize instructional videos and customer support to guide you through filter changes.
- Regularly check system components : Inspect for leaks or damage during replacements to avoid system malfunctions.
Installation and Replacement Process
Most RO systems, including the Water Saver 75, are designed for easy installation and filter changes. The system is commonly installed under the kitchen sink but can also be placed in basements or other convenient locations within 20 feet of the faucet. The availability of detailed installation and maintenance videos, like those provided by the manufacturer, greatly simplifies the process.
During filter replacement :
- Shut off the water supply to the RO system.
- Relieve pressure by opening the faucet.
- Remove the old filters or membrane carefully.
- Insert the new filters or membrane in the correct orientation.
- Turn the water supply back on and check for leaks.
- Flush the system as per instructions before use.
By following these maintenance tips, you ensure your reverse osmosis system continues to deliver pure, clean, and great-tasting water for years to come.
Customer Support and Resources for Reverse Osmosis Systems
When investing in a reverse osmosis drinking water system, having reliable customer support and access to helpful resources is just as important as the system’s features. Good support enhances your overall experience, making installation, maintenance, and troubleshooting much easier.
Importance of Customer Support
Effective customer support ensures that any questions or issues you encounter during installation or use are promptly addressed. This reduces downtime and prevents frustration. For example, in the video, a customer named Todd praised the team’s responsiveness, noting they were “over the top” in helping with every need, even during challenging times like the COVID-19 pandemic and shipping delays.
- Quick responses : Fast replies to emails or calls can solve problems before they escalate.
- Installation guidance : Support teams can walk you through the setup process, ensuring correct installation.
- Troubleshooting assistance : Identifying and fixing system errors or issues is easier with expert help.
Available Resources for RO Systems
Manufacturers and retailers often provide a variety of resources to support buyers, including :
Video Tutorials
Video guides are invaluable for visual learners. For example, the video mentions detailed YouTube tutorials that cover installation, filter replacement, and system operation for specific models like the Water Saver 75. These videos help demystify the process and empower users to maintain their systems confidently.
Instructional Guides and Manuals
Printed or downloadable manuals offer step-by-step instructions, diagrams, and specifications. These documents should be kept handy for reference, especially when troubleshooting or performing maintenance.
Online FAQs and Troubleshooting Pages
Many websites provide frequently asked questions and troubleshooting tips that cover common concerns such as filter replacement intervals, flow rate issues, or water quality checks.
Customer Service Teams
Direct access to knowledgeable customer service representatives can be a game changer. As highlighted in the video, Anna from the customer service team frequently assists customers by addressing specific water-related questions, ensuring users understand what they need to fix or improve their water quality.
Choosing a System with Strong Support
When shopping for an RO system, prioritize brands and sellers that offer :
- Made in North America products : These often come with better support and easier access to replacement parts.
- Non-proprietary filters : This allows you to source replacement filters from multiple suppliers, reducing dependency on a single brand.
- Comprehensive customer support : Including email, phone, or chat support with knowledgeable staff.
- Educational content : Videos, guides, and FAQs that empower you to install and maintain your system effectively.
Real Customer Experiences
Customer reviews offer valuable insight into the quality of support you can expect. As recounted by Todd, the company’s team kept him updated about shipping delays and answered all his installation questions quickly. Such transparency and care build trust and confidence in the product and brand.
Additional Support Tips
- Keep contact details for customer support easily accessible.
- Subscribe to manufacturer newsletters or YouTube channels for updates and tips.
- Join online communities or forums related to water filtration systems for peer advice.
By selecting a reverse osmosis system backed by excellent customer support and rich resources, you ensure a smooth, satisfying experience from purchase through years of use.
Environmental Benefits of Using Reverse Osmosis Systems
Beyond providing clean, great-tasting water for your family, reverse osmosis systems offer significant environmental advantages. Choosing an RO system supports sustainability by reducing reliance on bottled water and minimizing plastic waste.
Reducing Plastic Waste
One of the most prominent environmental benefits of using a reverse osmosis drinking water system is the dramatic reduction in single-use plastic bottles. Bottled water consumption contributes to millions of tons of plastic waste globally, much of which ends up polluting oceans and landfills.
With an RO system installed at home, you gain easy access to pure water from your tap, eliminating the need to purchase bottled water. This shift helps reduce :
- Plastic production and resource consumption
- Waste accumulation in the environment
- Energy used in manufacturing and transporting bottled water
Addressing Microplastics Concerns
Recent studies have revealed the widespread presence of microplastics in bottled water and even tap water around the world. These tiny plastic particles pose health concerns and environmental risks. By using an RO system, you avoid exposure to microplastics that are often found in bottled water, ensuring your drinking water is cleaner and safer.
Water Efficiency Considerations
While traditional reverse osmosis systems waste some water during the filtration process, advancements have produced high-efficiency models that drastically reduce water wastage. For instance, the Water Saver 75 system mentioned in the video wastes about half the water compared to standard systems, making it a more eco-friendly choice.
- Standard RO systems : Tend to waste more water as they flush impurities down the drain.
- High-efficiency RO systems : Utilize improved membrane technology and flow designs to minimize water waste.
By selecting a high-efficiency RO system, you conserve water resources while still enjoying the benefits of purified drinking water.
Energy Savings and Carbon Footprint Reduction
Using an RO system at home also reduces the carbon footprint associated with bottled water production, packaging, and transportation. Bottled water requires significant energy inputs from manufacturing plastic bottles to shipping them across long distances.
In contrast, RO systems operate using household water and electricity, generally consuming far less energy per gallon of water purified. This shift supports environmental conservation and helps combat climate change.
Supporting Sustainable Lifestyle Choices
Investing in a reverse osmosis drinking water system aligns with growing consumer awareness and commitment to sustainable living. It encourages habits such as :
- Refilling reusable bottles instead of purchasing bottled water
- Reducing plastic consumption and waste generation
- Being conscious of water usage and conservation
These positive behaviors contribute not only to personal health but also to the well-being of the planet.
Summary of Environmental Benefits
| Benefit | Description |
|---|---|
| Reduction in Plastic Waste | Eliminates the need for single-use plastic bottles by providing clean water at home. |
| Minimizes Exposure to Microplastics | Purifies water free from microplastic contamination often found in bottled water. |
| Water Conservation with High-Efficiency Models | Uses less water during filtration, reducing wastage compared to standard RO systems. |
| Lower Carbon Footprint | Reduces energy consumption and greenhouse gas emissions associated with bottled water production and transport. |
In conclusion, a reverse osmosis system is not only a smart choice for your health but also a responsible decision for the environment. By switching to an RO drinking water system, you contribute to reducing plastic pollution, conserving water, and lowering your household’s environmental impact.

Hasan Al Sarker is a Reverse Osmosis Specialist. He has worked for many years to ensure safe drinking water for all. His research paper has been published in several journals, including Issue, Medium, and Slideshare. He is recognized as a water doctor among specialists though he did not attend medical college.
Besides working as a researcher of reverse osmosis technology, he is also very fancy with the kitchen and cooking. His guides are reading thousands of people every day. As a head of content, he is responsible for all the published articles at RO System Reviews.