Written by: Alexandra Uta // Last Updated: Mar 27, 2023
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Are you finding water is leaking from your under sink reverse osmosis system?
Have you figured out that it is coming from your RO membrane housing? Not sure what to do next?
Don’t worry. We have you covered. Read on to learn what may be causing your RO membrane housing to leak and what you can do to fix it and prevent leaks in the future.
Key Takeaways
These are the common reasons for a leaking RO membrane housing and how to fix them:
There are several reasons your membrane housing could be leaking, and it is important to identify which it is, so you know where to focus on fixing it.
Check the body/housing of your membrane. There may be cracks due to general wear and tear or spikes in the water pressure. If you identify any, then the housing will need to be replaced.
If the leaking is centralized near the membrane housing cap, then it will likely be due to one of the following.
The O-ring in the membrane housing cap may be causing the leak. Check to see if it is brittle, worn-out, misplaced, or dirty.
Replace the O-ring if needed, and lubricate it with food-grade silicone. If the O-ring is still in good shape, make sure it is clean and properly seated.
Check the housing cap for any cracks. These can occur due to water pressure spikes. If there are cracks, the housing cap will need replacement.
It could be as simple as your housing cap is not screwed on tightly enough, or the RO membrane has not been pushed in far enough, and the cap, therefore, cannot close properly. Check that the membrane is pushed in correctly, and tighten the cap using a wrench if need be.
Once you have identified the issue causing your membrane housing to leak, you will need to follow this procedure to fix it without causing a mess:
Here is how to prevent your RO membrane housing from leaking in future:
If you have any questions about RO membrane leaking please don’t hesitate to leave a comment below!
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