What Maintenance is Required for a Reverse Osmosis Filtration System? (Hint: It’s Easier Than You Think!)
So, you’ve invested in a reverse osmosis (RO) system to enjoy clean, delicious drinking water straight from your tap. Awesome! But now you’re probably wondering, “What do I need to do to keep this reverse osmosis running smoothly?”
We get it. Maintaining any kind of water filtration system can seem a bit daunting, especially when you’re not sure where to start. But don’t worry, at Instant Plumbing and Rooter, we’re here to simplify things for you. We’ve been helping homeowners in Phoenix and the surrounding cities with their plumbing needs for over 20 years, and we’re experts at keeping those RO systems in tip-top shape.
Reverse Osmosis: A Quick Refresher
Before we dive into maintenance, let’s quickly recap how reverse osmosis works. Think of it like a super-powered filter that removes impurities from your water. It uses a special membrane to separate the good stuff (clean water) from the bad stuff (contaminants like chlorine, heavy metals and even bacteria). It’s like a microscopic strainer that only lets the purest water molecules through.

Components of an RO System: Knowing the Players
Your RO system is made up of several key components:
- Pre-filters: These are like the bouncers at a club – they stop the big, unwanted particles (like sediment and chlorine) from entering the system and clogging things up.
- Membrane: This is the star of the show! It’s a thin film with tiny pores that only allow water molecules to pass through, leaving behind contaminants.
- Storage Tank: This is where the purified water is stored until you need it. It’s like a water bottle for your RO system.
- Post-filter: This is the final polishing step. It removes any remaining impurities and improves the taste of your water.
The reverse osmosis systems Instant Plumbing and Rooter offers is a 5 stage RO filtration system. With 3 pre-filters, 1 post filter, a membrane and the storage tank. We offer 3 different 5 stage units, 2 of them are a 1:1, this means for every 1 gallon made, 1 gallon wasted, the other option is a 3:1, for every 1 gallon made, 3 gallons wasted. Even with the 3:1 unit that we have installed in our home, with a water softener, we did not see an increase in our city water bill.

Essential Maintenance Tasks For Keeping Your RO System Happy
Just like your car needs regular oil changes and tune-ups, your RO system needs a bit of TLC to keep it running smoothly. Here are the essential maintenance tasks:
- Replacing the Filters: This is the most important maintenance task. The filters in your RO system get dirty over time, so they need to be replaced regularly to ensure optimal performance.
- Frequency of Filter Changes: The frequency depends on the type of filter and your water usage. Pre-filters typically need to be replaced every 6-12 months, while the membrane can last 2-5 years.
- Types of Filters and Their Lifespans: Different RO systems use different types of filters, so it’s important to consult your system’s manual for specific recommendations.
- Frequency of Filter Changes: The frequency depends on the type of filter and your water usage. Pre-filters typically need to be replaced every 6-12 months, while the membrane can last 2-5 years.
- Monitoring Water Quality and Pressure: Keep an eye on the quality of your water and the water pressure in your home. If you notice any changes, it could indicate a problem with your RO system.
- Checking the Storage Tank: Periodically check the storage tank for any signs of leaks or damage. The storage tank should be changed out every 5 years.

Signs Your RO System Needs Attention: Don’t Ignore These Red Flags
- Decreased Water Flow: If you notice a decrease in water flow from your RO faucet, it could be a sign that a filter is clogged or that the membrane or tank needs to be replaced.
- Changes in Water Taste or Odor: If your water starts to taste or smell different, it could indicate a problem with the filters or the system itself. (When was the last time the filters were changed?!?)
- Leaks or Unusual Noises: Any leaks or strange noises coming from your RO system should be investigated promptly.
Benefits of Regular RO System Maintenance: Why It’s Worth the Effort
- Ensuring Clean and Safe Drinking Water: Regular maintenance ensures that your RO system is effectively removing contaminants from your water, providing you with clean and safe drinking water.
- Extending the Lifespan of Your System: Proper maintenance can help your RO system last longer, saving you money on costly repairs or replacements.
- Preventing Costly Repairs: Addressing minor issues early on can prevent them from turning into major problems that require expensive repairs.
DIY vs. Professional Maintenance: Know Your Limits
While some RO system maintenance tasks, like changing filters, can be done by homeowners, others might require the expertise of a professional plumber. If you’re not comfortable working with your RO system or if you encounter a problem you can’t solve, don’t hesitate to call in the pros.
Keep Your Water Crystal Clear
A reverse osmosis system is a valuable investment in your health and home. By following a regular maintenance schedule and addressing any issues promptly, you can ensure that your system continues to provide you with clean, delicious drinking water for years to come. And remember, if you ever need help with your RO system, Instant Plumbing and Rooter is just a phone call away!
Frequently Asked Questions
Q: How often should I change the filters in my RO system?
A: The frequency of filter changes depends on the type of filter and your water usage. Pre-filters typically need to be replaced every 6-12 months, while the membrane can last 2-5 years.
Q: How can I tell if my RO system is working properly?
A: Monitor the water flow, taste and odor. If you notice any changes, it could indicate a problem with your system.
Q: What is the purpose of the post-filter in an RO system?
A: The post-filter is the final stage of filtration in an RO system. It’s typically a carbon filter that removes any remaining impurities and improves the taste and odor of your water. It’s like the final polish that makes your water sparkle!
Q: What should I do if my RO system is leaking?
A: Turn off the water supply to the system and call a professional plumber to diagnose and repair the leak.
Q: What are some signs that my RO membrane needs to be replaced?
A: If you notice a decrease in water flow from your RO faucet or if your water quality starts to decline even after changing the pre-filters, it could be a sign that the RO membrane needs to be replaced.
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