How to Fill Reverse Osmosis Tank: A Step-by-Step Guide

how to fill reverse osmosis tank

A reverse osmosis (RO) system is an essential home appliance that ensures clean drinking water. However, to maintain your RO system’s efficiency, you need to know how to fill reverse osmosis tank correctly.

Filling the tank may seem like a simple task, but it’s crucial to do it the right way to ensure optimal system performance. In this post, we will guide you through the steps to fill your RO tank properly, along with tips, mistakes to avoid, and best practices.

Step-by-Step Guide on How to Fill Reverse Osmosis Tank

Filling your RO tank requires following a series of simple steps.

  1. First, turn off the RO system to avoid water flow during the filling process.
  2. Next, locate the RO tank and remove the cap.
  3. Check the air pressure in the tank and fill it with filtered water.
  4. Reinstall the cap on the tank and turn the RO system back on.

These steps are essential to ensure the tank is filled correctly, and the system operates efficiently.

Before filling the RO tank, make sure to use a TDS meter to test the quality of the water. TDS stands for Total Dissolved Solids, and it measures the concentration of dissolved solids in the water. A high TDS level indicates that the water contains a high level of contaminants, which can clog the membrane and reduce the RO system’s efficiency.

Tips For Filling RO Tank

To maintain your RO system’s optimal performance, consider these tips when filling the tank.

  • Firstly, clean the tank regularly to prevent bacterial buildup. Bacteria can grow in the tank if it’s not cleaned regularly, leading to contamination of the water.
  • Secondly, ensure the air pressure in the tank is correct to avoid any damage to the system. Over or under pressurizing the tank can damage the bladder and the RO system.
  • Thirdly, keep an eye on the water level in the tank to ensure it remains at the right level. A full tank means the system is working efficiently.

Common Mistakes To Avoid

Mistakes can happen when filling an RO tank, which can compromise the system’s performance. One of the most common mistakes is filling the tank with unfiltered water.

Unfiltered water can clog the membrane and damage the system, reducing its efficiency. Overfilling the tank can also damage the system, as it causes the tank’s air bladder to malfunction.

Lastly, make sure to turn the RO system back on after filling the tank. Many people forget to turn the system back on, which can cause issues with the system’s performance.

Importance of Proper Maintenance of RO System

Maintaining your RO system is crucial to ensure it operates efficiently and provides clean water. Regular maintenance includes changing the filters, cleaning the RO membrane, and sanitizing the system.

Neglecting maintenance can cause the system to malfunction, leading to contaminated water. Therefore, it’s essential to follow the manufacturer’s instructions for maintenance and schedule regular maintenance appointments with a professional.


Filling an RO tank is a simple task that requires following specific steps and best practices to ensure optimal performance. By following our step-by-step guide, tips, and mistakes to avoid, you can maintain your RO system’s efficiency and enjoy clean and safe drinking water.

Remember to schedule regular maintenance appointments and follow the manufacturer’s instructions for optimal system performance. By doing so, you can ensure your RO system continues to provide clean and safe drinking water for years to come.


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